Potential Improvement of Bitumen Properties Using Waste Plastic, Rubber and Natural Rubber: an Eco-Friendly Approch

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Liton Rabbani, Tanvir Mahtab, Md. Fahad Bin Azad, Shahan Shahariyer Mashuk, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7159732/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Bitumen, a vital component in various construction applications, is undergoing innovative enhancements to improve its properties and sustainability. This study explores the potential of incorporating waste plastic, waste rubber, and natural rubber (5%, 7.5%, 10%) into bitumen formulations to enhance its performance characteristics. Waste plastic and rubber materials, which pose significant environmental challenges due to their non-biodegradable nature, are being repurposed as additives in bitumen to address both waste management concerns and improve asphalt properties. Similarly, natural rubber, derived from renewable sources, offers opportunities to enhance bitumen properties while reducing dependency on fossil fuel-derived additives. Through a comprehensive review of existing literature and experimental data, this study evaluates the effects of incorporating waste plastic, rubber, and natural rubber on key bitumen properties. The properties of bitumen are measured by specific gravity test, ductility test, softening point test, penetration test, and flash and fire point test. The findings highlight the potential benefits of these additives in improving the performance and sustainability of bitumen-based materials in road construction, pavement rehabilitation, and waterproofing applications. Moreover, the study discusses challenges, including compatibility issues, optimal dosage levels, and long-term performance, and proposes avenues for future research to optimize the utilization of waste plastic, rubber, and natural rubber in bitumen formulations, thereby contributing to the development of eco-friendly and high-performance asphalt materials. Environmental Engineering Waste Plastic waste rubber properties of bitumen performance eco-friendly Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 INTRODUCTION Growing population growth and development activities led to an increase in plastic waste, which is harmful to the environment. Waste management, especially solid waste management, is the most undeveloped sector of management worldwide. Every day, our country generates tons of rubbish. We have no idea how to properly dispose of solid garbage. It is not only our problem; it is a worldwide problem that is progressively making the world a less desirable place to live. The use of plastics in road building can significantly reduce this problem. The majority of the roads built here are bituminous. Plastics, as well as construction garbage, are widely employed as aggregate and filler substances in the construction of bituminous pavement. By combining polymers with bitumen, the amount of bitumen used may be lowered while the strength metrics are enhanced. This is the approach used by the authors in this study Plastic is a material has a wide variety of synthetic and semi-synthetic characteristics which can be cast into a number of solid objects. It is user-friendly and long-lasting; however, it is not recyclable or biodegradable. It consists of a chemical bond that makes it strong and immune to natural degradation activities. Plastic is often used in the production of a wide range of products due to its low cost, water resistance, and ease of manufacture. Plastics are classified into two types: thermoplastics and thermoses. Thermoplastics are plastic polymer compounds that become mouldable at a specific extreme temperature and harden upon cooling. Thermoses - Thermoses is the form of plastics when they turn into solid. This kind of plastic is very useful for its strength and long lifespan. Improvements in technology, wide sector, and consumer habits have accelerated the production of uncontrolled waste. Plastic and rubber, among other waste items, represent substantial issues since they are non-biodegradable and harmful to the environment. Proper plastic and tire rubber disposal is critical, especially in urban areas. Many nations have experienced a rise in the demand for asphalt modification using various types of polymers in recent years. The fundamental goal of bitumen and bituminous mix modification is to improve the characteristics and performance of bitumen mixtures. The addition of such material not only improves the physical characteristics of bitumen but also the mechanical performances of bituminous mixes. Bitumen modification increases resistance to rutting, fatigue, and thermal cracking. Investigated the effect of rubber content on bitumen characteristics using various rubber content percentages and bitumen grades. Their studies show that increasing the rubber content improves penetration resistance. Materials improve bitumen softening points. According to their findings, raising the blending temperature increases the mass of tire rubber because of the rubber expansion during the mixing process. Furthermore, the study discovered that increasing the rubber component improves the stiffness qualities of bitumen. Through a combination of experimental investigations and analytical assessments, this research seeks to shed light on the potential benefits of waste properties incorporation in terms of improving bitumen properties and reducing the environmental pollution of construction materials. By understanding the use of waste properties interactions within the bituminous matrix, this study aims to contribute to the growing body of knowledge in sustainable construction practices and offer valuable insights. This study aims to shed on the possible advantages of waste properties inclusion in terms of increasing bitumen characteristics and minimizing environmental pollution from waste materials through a combination of experimental studies and analytical analyses. This study looks for to add to the increasing body of knowledge in waste practices by analyzing the usage of waste properties relations within the bituminous matrix and provide significant insights for researchers as well as professionals in this field Scope and Limitations. LITERATURE REVIEW Since plastic waste has such a negative effect on ecosystems, human health, and the state of the world as a whole, plastic garbage has become a major global environmental problem. Plastic waste is any material that has been wasted or abandoned, including packaging, containers, one-time use objects, and several other items created from synthetic polymers. This trash builds up in landfills, waterways, rivers, and even remote natural regions, leading to a number of issues on the social, economic, and environmental fronts. Plastics are organic polymers made of components including carbon, hydrogen, oxygen, nitrogen, Sulphur, and chlorine, and they have a high molecular weight. Plastic serves as a bonding agent when heated. Plastic waste exhibits unique characteristics that make it potential for utilization in various application, such as in construction sector as well as in road construction. There are various types of plastic waste such as polyethylene, High-density polyethylene, Low-density polyethylene. Each type of plastic has some unique characteristics such as high ductility, light weight etc. Due to its potential to solve environmental and economic issues, research into the use of plastic waste in bituminous materials has flourished in recent years. The authority in charge of road construction can aid in the fight against waste by doing its part to prevent plastic from going to landfills and instead using it as a supplement to conventional bitumen. However, despite its useful properties, bitumen that includes plastic waste brings complications that call for extensive study. Potential difficulties stemming from plastic waste's reactive nature, its impact on bitumen workability, setting times, and long-term behavior, and its variable composition necessitate careful examination. In order to provide a basis for the feasibility and performance evaluation of plastic waste as a replacement for a defined amount of bitumen, the following sections of this literature review will look into key studies and research findings that throw light on these elements. S.Sivarasan et al. [1] focus on the one of the valid and dangerous environmental pollutants plastic waste. The goal is to innovation of such kind of bitumen in which plastic waste and carbon rubber are used. The research explores plastic waste and carbon rubber innovative use in bitumen to replace a specified amount of bitumen, testing suitable properties like specific gravity, ductility, softening point, Marshall test. The study observes bituminous characteristics by replacing bitumen (60/70) grad with various proportion (5%, 7%, 9%) of plastic waste and carbon rubber waste tire. The result shows that up to 7% percent of plastic and tires to be added in bitumen and the modified bitumen have a high softening point of 92 0 c temperature which can be used in high temperature areas. The normal bitumen and waste plastic added bitumen is tested as per specifications in IRC: SP: 53:2010, IS 3370. Nitu H. Deshmukh et al. [2] emphasizes the cost minimization of the bitumen by mixing waste crumb rubber with bitumen. Now a days transportation system is developed as well as increasing the intensity of vehicle. As a result, waste of tires is increasing proportionally. Experiment replaces bitumen with waste crumb rubber at 0%, 8%, 10%, 12%, 14% to delivering improved physical qualities over traditional bitumen. Penetration test, Softening point test, Ductility test are conduct to get the physical properties of bitumen over modified mix bitumen. The result describes that increased amount of rubber waste decrease the penetration value which is a good sign for the road because it gives addition strength to the road and reduce additional damage. The experiment also shows that increased amount of rubber increases the softening point and the ductility of bitumen. The study investigates bituminous properties and optimal replacement (0%, 8%, 10%, 12%, 14%) of bitumen with crumb rubber, measuring conduct through penetration, softening point, ductility test. Dr. S. L. Hake et al. [3] focus on the utilization of plastic waste for the development of adaptable asphalt and reduce resource consumption, environmental pollutant. The study utilize plastic of 5%, 7.5%, 10%, 12.5% and 15% as exchange of bitumen. samples were made, examined, and evaluated for Marshall test. In this study, it is discovered that the overall cost of plastic blend bitumen was 5.18% less expensive than standard bitumen. D. C. Rahi et al. [4] described the improved environmental management by exploit of plastic waste in bitumen road construction. The aims of the study to develop the quality of bitumen by utilize some percentage (2%, 4%, 6%, 8%) of plastic waste to melted bitumen. Plastic wastes innovative use as subsidiary of bitumen was explored as an alternative to traditional bitumen. The study investigates the bituminous properties, assessing behaviour through penetration, softening point, ductility test. The bitumen 60/70 penetration grade was employed in this project. The result shows increase the softening point, viscosity and decrease the penetration value which improves the performance of bitumen. Mohd Ezree Abdullah et al. [5] underscores the effects of plastic waste on rheological properties of bitumen. Disposal of plastic waste in an open area leads to environmental pollution such as water pollution, soil pollution, and sometimes air pollution when it is burned. The study focused on the mixing of plastic waste with bitumen to show the changes in the performance of bitumen. The result shows that up to 6% increase of plastic waste in bitumen decrease the penetration depth (55.3 to 24.1), increase the softening point (53 0 C to 56 0 C) and viscosity (1600 cP at 135 0 C). R.Manju et al. [6] addresses the impact of global warming and pollution by disposal of plastic waste. The study focuses on the minimization of global warming, greenhouse gases and pollution by use of plastic waste in bitumen to make an eco-friendly environment. The experiment replaces 10% of bitumen by plastic waste and the result is so impressive that the softening point, viscosity increase and penetration value decrease according to increase of plastic. R. Vasudevan et al. [7] investigates the disposal of various plastic wastes in an environmentally friendly manner. The experiment shows an ingenious method of constructing flexible pavement and making pathway blocks to form an eco-friendly solution for plastic waste. In this experiment, up to 10% plastic is used for the substitution of bitumen. A specified amount of plastic (1%, 2%, 3%, 5%, 10%) are used with bitumen to notice the changes of bituminous properties. Results show a proportional increase in ductility, softening point, and decrease in penetration of bitumen when using crumb rubber and a decrease in ductility when using plastics. G. Ramesh Kumar et al. [8] focus on the E-waste which are thrown into the environment without sufficient recycling treatment. Now a days E-Waste is rising as a result of a bigger growth in the utilization of electronic components. The study investigates the various percentages (0%, 6%, 12%, and 18%) of E-PCB waste used as a substitute for bitumen. Penetration test, Ductility, softening point, flash and fire point, viscosity, Specific gravity test are conduct to find the optimum ratio of E-waste powder in bitumen. The result shows 12% of E-waste powder in bitumen have the optimum quality. Omar R. Khaleel et al. [9] discuss about the Co-biodegradability issues and investigates the impact of incorporating waste plastic and rubber on the physical properties of bitumen. The experiment emphasizes on the development of bitumen to increase softening point. Various percentage (4% and 6%) of tire rubber and waste polyethylene terephthalate (PET) are used in bitumen with a grade of 85/100.The result indicate that 6% of waste PET and tire rubber as an additive in bitumen enhanced penetration value, softening point and viscosity. Malik Shoeb Ahmad et al. [10] emphasizes the recycling of plastic waste into useful products since plastic waste has a harmful effect on the environment. Plastic (Polyethylene Terephthalate, PET) waste added in bitumen at various percentage (2% to 14%) in the experiment. For the characterization of plain bitumen and modified bitumen various test conducted. Between 10 and 12% of the bitumen's weight, plastic waste concentration that is most effective is attained. The study's findings showed that the modified mixture outperformed the non-modified bitumen in terms of performance. Saifullah et al. [11] investigates the effects of blending waste . The study investigates various waste to use this waste in various ways. They investigate how this waste affects the environment and this waste can be used in various works. Appiah et al. [12] investigates the effects of blending waste thermoplastic polymers in Conventional AC‐20 graded bitumen. The study added up to 3% of plastic polymer in bitumen to observe the changes in rheological parameter between traditional bitumen and modified bitumen. Various test is conducted and at 3% polymer loading the most enhanced, homogenous blend is achieved. The paper emphasizes sustainable development in road construction by utilizing plastic waste. MATERIALS AND METHODS This study's methodology takes the form of an experimental investigation complete with empirical testing and analytical evaluations. This method allows for the systematic investigation of bitumen's physical properties when plastic waste is substituted for a fixed volume of bitumen. The study's blueprint consists of the following essential parts: 1. Materials Selection: The research design relies heavily on the precision with which the raw materials are chosen. Bitumen, plastic waste (plastic bottle), rubber (tire tube), raw component of rubber are the main components of the researched mixed bitumen. Bitumen mixture design best practices inform the selection of these ingredients and their specific qualities and amounts. 2. Experimental Setup: Bitumen mixed with plastic waste and rubber will be prepared and tested in the project as a potential partial replacement for traditional bitumen. Various replacement levels (0%, 5%, 7.5%, 10%) are considered to evaluate the effects of plastic waste and raw rubber incorporation on bitumen properties. 3. Testing Protocol: Bitumen's physical properties are evaluated through a comprehensive Test. Standard test such as specific gravity, penetration, ductility, softening point, flash and fire point test are conduct to assess the influence of plastic waste replacement. 2. Bitumen Mixing: Various percentage (0%, 5%, 7.5%, 10%) of selected materials (Plastic bottle, Tire tube, natural rubber) are mixed with bitumen by heating them together. The mixing process is carefully monitored to ensure uniformity. 3. Testing and Analysis: The cast specimens go through a series of mechanical and physical tests, including specific gravity, penetration, ductility, flash and fire point, softening point test. The collected information is examined to determine how much of an impact plastic waste and rubber replenishment has on the characteristics of the bitumen. 4. Data Interpretation and Conclusion: It is determined whether or not plastic waste and rubber could be used as a specified replacement of traditional bitumen based on the analysis and interpretation of the data collected. The findings are presented in light of previous research and their potential applications. SPECIMEN PREPARATATION Materials Used We chose the plastic waste and rubber to create the modified bitumen. The following are the raw ingredients that will be used to produce modified bitumen: 1. Bitumen 2. Tire tube (from garage) 3. Plastic bottle (from roadside) 4. Natural rubber (from rubber tree) Cutting and Melting Plastic and tire were cut the as a small size. Then the materials were put in different pot and melting them in an induction cooker. The material also melts by natural process (using fire), oven. Mixing The melted materials are weighted and mix with bitumen at various proportions (5%, 7.5%, and 10%). For mixing the different percentage of materials and bitumen were put in different pot. Then all the materials were mixed well with a metal rod and prepared them for further testing. Specimen Testing A set of tests were performed to find the properties of the mixing bitumen. Following tests were performed: Specific Gravity Ductility Softening Point Penetration Test Flash and Fire Point RESULTS AND DISCUSSION Results and Discussion presents a comprehensive analysis of the various properties of Bitumen containing waste plastic, rubber, and natural rubber. The experimental findings and data obtained from the conducted tests are critically examined and discussed to evaluate the feasibility and effectiveness of using waste plastic, rubber, natural rubber in Bitumen. Specific Gravity Test Specific Gravity test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste. Table 1 : Specific Gravity with Different Types of mixed bitumen Materials Percentage (%) of Materials Percentage (%) of pure Bitumen Specific Gravity 0 100 1.1707 5 95 1 Tire Tube 7.5 92.5 1.1208 10 90 1.10323 0 100 1.1707 5 95 1.27 Natural Rubber 7.5 92.5 1.22 10 90 1.24 0 100 1.1707 5 95 1.252 Plastic Waste 7.5 92.5 1.184 10 90 1.251 Comparison of mixed Bitumen with pure Bitumen: The specific gravity of bitumen modified with various waste materials, such as tire waste, natural rubber, and plastic waste, is a critical parameter in evaluating the performance and suitability of these additives for road construction. The graph-1 compares the specific gravity values of pure bitumen and bitumen modified with different percentages of these waste materials, providing insights into which modification approach might be more advantageous. Tire Waste Modified Bitumen: 5% Tire Waste : The specific gravity is significantly lower (1) than pure bitumen. This reduction might indicate less dense mixtures, potentially impacting the structural integrity of the pavement negatively. 7.5% Tire Waste : The specific gravity (1.1208) is closer to that of pure bitumen, suggesting better compatibility. 10% Tire Waste : The specific gravity (1.10323) is also close to that of pure bitumen but slightly lower than the 7.5% mixture. Overall, 7.5% tire waste mixed with bitumen provides a specific gravity closest to pure bitumen, indicating a balanced approach between adding waste material and maintaining desirable properties. Natural Rubber Modified Bitumen: 5% Natural Rubber : The specific gravity (1.27) is higher than pure bitumen, indicating a denser mixture. This could potentially enhance the strength and durability of the pavement. 7.5% Natural Rubber : The specific gravity (1.22) remains higher than pure bitumen but slightly lower than the 5% mixture. 10% Natural Rubber : The specific gravity (1.24) is still higher than pure bitumen and shows a consistent trend of increased density with natural rubber. Natural rubber modifications consistently result in higher specific gravities than pure bitumen, suggesting potential improvements in pavement performance due to increased density. The 5% and 10% mixtures are particularly notable for their higher specific gravity values. Plastic Waste Modified Bitumen: 5% Plastic Waste : The specific gravity (1.252) is higher than pure bitumen, indicating increased density. 7.5% Plastic Waste : The specific gravity (1.184) is closer to pure bitumen, suggesting a balanced mixture. 10% Plastic Waste : The specific gravity (1.251) is very similar to the 5% mixture, indicating a consistent increase in density with higher plastic content. Plastic waste modifications also show an increase in specific gravity compared to pure bitumen, with the 5% and 10% mixtures providing higher densities, potentially enhancing pavement strength and durability. Ductility Test Ductility test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste. Table 2 : Ductility with Different Types of mixed bitumen Materials Percentage (%) of Materials Percentage (%) of pure Bitumen Ductility (cm) 0 100 81.3 5 95 42 Tire Tube 7.5 92.5 37.6 10 90 41.1 0 100 81.3 5 95 40 Natural Rubber 7.5 92.5 37.7 10 90 39 0 100 81.3 5 95 45.2 Plastic Waste 7.5 92.5 43.3 10 90 52.2 Comparison of mixed Bitumen with pure Bitumen: Ductility is a crucial property of bitumen that measures its ability to undergo significant deformation before breaking. High ductility is typically desirable for ensuring the flexibility and durability of asphalt pavements. This chapter compares the ductility values of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best performance. Tire Waste Modified Bitumen: 5% Tire Waste : The ductility decreases significantly to 42.0 cm, which is roughly half of the ductility of pure bitumen. 7.5% Tire Waste : The ductility further decreases to 37.6 cm, indicating reduced flexibility. 10% Tire Waste : The ductility improves slightly to 41.1 cm but is still much lower than pure bitumen. Overall, adding tire waste reduces the ductility of bitumen significantly, which might impact the flexibility and performance of the pavement. The best performance among the tire waste mixtures is seen at 5% tire waste, but it still represents a significant decrease in ductility compared to pure bitumen. Natural Rubber Modified Bitumen: 5% Natural Rubber : The ductility decreases to 40.0 cm. 7.5% Natural Rubber : The ductility decreases slightly further to 37.7 cm. 10% Natural Rubber : The ductility is 39.0 cm. Natural rubber also reduces the ductility of bitumen, although the reduction is somewhat similar to that seen with tire waste. The 10% natural rubber mixture shows a slight improvement over the 7.5% mixture but still represents a considerable reduction from pure bitumen. Plastic Waste Modified Bitumen: 5% Plastic Waste : The ductility decreases to 45.2 cm. 7.5% Plastic Waste : The ductility decreases to 43.3 cm. 10% Plastic Waste : The ductility increases to 52.2 cm, which is closer to the original ductility of pure bitumen. Plastic waste modifications, while reducing ductility compared to pure bitumen, show the least reduction among the three types of waste. Particularly, the 10% plastic waste mixture stands out with a ductility of 52.2 cm, the highest among all modified bitumen mixtures, and closest to the ductility of pure bitumen. Softening Point Softening Point test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste. Table 3 : Softening Point with Different Types of mixed bitumen Materials Percentage (%) of Materials Percentage (%) of pure Bitumen Softening Point (˚c) 0 100 59.3 5 95 62.3 Tire Tube 7.5 92.5 57.525 10 90 56.545 0 100 59.3 5 95 57.11 Natural Rubber 7.5 92.5 54.19 10 90 53.76 0 100 59.3 5 95 60.32 Plastic Waste 7.5 92.5 59.97 10 90 61.96 Comparison of mixed Bitumen with pure Bitumen: The softening point of bitumen is a measure of its temperature susceptibility, indicating the temperature at which the bitumen transitions from a semi-solid to a liquid state. Higher softening points generally indicate better performance in high-temperature conditions. This chapter compares the softening points of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best performance. Tire Waste Modified Bitumen: 5% Tire Waste : The softening point increases to 62.3˚C, indicating an improvement in high-temperature performance. 7.5% Tire Waste : The softening point decreases to 57.525˚C, which is lower than pure bitumen. 10% Tire Waste : The softening point further decreases to 56.545˚C, indicating a reduction in high-temperature performance. Overall, while the 5% tire waste mixture shows an improved softening point, higher concentrations of tire waste led to decreased softening points, suggesting that lower percentages of tire waste are more beneficial for high-temperature performance. Natural Rubber Modified Bitumen: 5% Natural Rubber : The softening point decreases to 57.11˚C. 7.5% Natural Rubber : The softening point further decreases to 54.19˚C. 10% Natural Rubber : The softening point decreases to 53.76˚C. Natural rubber consistently lowers the softening point of bitumen, indicating a reduction in high-temperature performance across all tested concentrations. Plastic Waste Modified Bitumen: 5% Plastic Waste : The softening point increases to 60.32˚C. 7.5% Plastic Waste : The softening point remains close to that of pure bitumen at 59.97˚C. 10% Plastic Waste : The softening point increases significantly to 61.96˚C, indicating improved high-temperature performance. Plastic waste modifications show an increase in softening points, particularly at 5% and 10% concentrations, suggesting enhanced high-temperature performance. Penetration Test Penetration test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste. Table 4 : Penetration with Different Types of mixed bitumen Materials Percentage (%) of Materials Percentage (%) of pure Bitumen Penetration (mm) 0 100 0.1 5 95 2.236 Tire Tube 7.5 92.5 2.361 10 90 2.460 0 100 0.1 5 95 1.65 Natural Rubber 7.5 92.5 1.402 10 90 1.538 0 100 0.1 5 95 0.968 Plastic Waste 7.5 92.5 1.005 10 90 0.988 Comparison of mixed Bitumen with pure Bitumen: The penetration value of bitumen is a critical parameter that measures the hardness or softness of the material, indicating how much the bitumen will deform under a standard load at a given temperature. Lower penetration values indicate harder bitumen, which is generally more desirable for heavy traffic conditions. This chapter compares the penetration values of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best performance. Tire Waste Modified Bitumen: 5% Tire Waste : Penetration increases to 2.236 mm. 7.5% Tire Waste : Penetration increases further to 2.361 mm. 10% Tire Waste : Penetration increases to 2.460 mm. Adding tire waste results in a significant increase in the penetration value, indicating softer bitumen. This increase in softness may be less suitable for applications requiring high hardness and load-bearing capacity. Natural Rubber Modified Bitumen: 5% Natural Rubber : Penetration increases to 1.65 mm. 7.5% Natural Rubber : Penetration decreases to 1.402 mm. 10% Natural Rubber : Penetration slightly increases to 1.538 mm. Natural rubber modifications result in a moderate increase in penetration value, making the bitumen softer but still within acceptable ranges for certain applications. The 7.5% mixture provides the lowest penetration value among the natural rubber samples, indicating better performance. Plastic Waste Modified Bitumen: 5% Plastic Waste : Penetration increases to 0.968 mm. 7.5% Plastic Waste : Penetration slightly increases to 1.005 mm. 10% Plastic Waste : Penetration slightly decreases to 0.988 mm. Plastic waste modifications lead to the smallest increase in penetration values compared to pure bitumen, indicating that plastic waste helps maintain harder bitumen. The penetration values remain relatively low, showing that plastic waste modification maintains the desirable hardness of bitumen. Flash and Fire Point Test Flash and Fire Point test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber, plastic waste. Table 5 : Flash and Fire Point with Different Types of mixed bitumen Materials Percentage (%) of Materials Percentage (%) of pure Bitumen Flash Point (˚c) Fire Point (˚c) 0 100 80 115 5 95 231 335 Tire Tube 7.5 92.5 235 342 10 90 240 350 0 100 80 115 5 95 220 322 Natural Rubber 7.5 92.5 260 335 10 90 278 369 0 100 80 115 5 95 220 340 Plastic Waste 7.5 92.5 260 353 10 90 283 358 Comparison of mixed Bitumen with pure Bitumen: Flash Point: The flash point of bitumen is a crucial safety parameter, indicating the temperature at which bitumen emits vapours that can ignite in air. Higher flash points indicate better safety and lower risk of fire during handling and application. This chapter compares the flash points of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best safety performance. Tire Waste Modified Bitumen: 5% Tire Waste : The flash point increases significantly to 231˚C. 7.5% Tire Waste : The flash point further increases to 235˚C. 10% Tire Waste : The flash point increases to 240˚C. The incorporation of tire waste significantly increases the flash point of bitumen, indicating a substantial improvement in safety and fire resistance. Higher concentrations of tire waste result in progressively higher flash points. Natural Rubber Modified Bitumen: 5% Natural Rubber : The flash point increases to 220˚C. 7.5% Natural Rubber : The flash point significantly increases to 260˚C. 10% Natural Rubber : The flash point further increases to 278˚C. Natural rubber also substantially increases the flash point of bitumen. The 10% natural rubber mixture offers the highest flash point among the natural rubber modifications, indicating excellent safety performance. Plastic Waste Modified Bitumen: 5% Plastic Waste : The flash point increases to 220˚C. 7.5% Plastic Waste : The flash point increases significantly to 260˚C. 10% Plastic Waste : The flash point further increases to 283˚C. Plastic waste modifications provide the highest increases in flash point among all additives. The 10% plastic waste mixture reaches the highest flash point (283˚C), indicating superior fire resistance and safety performance. Fire Point: The fire point of bitumen is a critical safety measure, indicating the temperature at which the bitumen will sustain burning after being ignited. A higher fire point signifies greater safety and resistance to combustion. This chapter compares the fire points of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best fire resistance. Tire Waste Modified Bitumen: 5% Tire Waste : The fire point increases significantly to 335˚C. 7.5% Tire Waste : The fire point further increases to 342˚C. 10% Tire Waste : The fire point increases to 350˚C. The incorporation of tire waste significantly increases the fire point of bitumen, indicating improved fire resistance. Higher concentrations of tire waste lead to progressively higher fire points, enhancing the material's safety. Natural Rubber Modified Bitumen: 5% Natural Rubber : The fire point increases to 322˚C. 7.5% Natural Rubber : The fire point increases to 335˚C. 10% Natural Rubber : The fire point significantly increases to 369˚C. Natural rubber modifications result in substantial increases in fire point. The 10% natural rubber mixture provides the highest fire point among the natural rubber modifications, indicating excellent fire resistance. Plastic Waste Modified Bitumen: 5% Plastic Waste : The fire point increases to 340˚C. 7.5% Plastic Waste : The fire point increases significantly to 353˚C. 10% Plastic Waste : The fire point further increases to 358˚C. Plastic waste modifications also result in significant increases in fire point. The 10% plastic waste mixture achieves a fire point of 358˚C, indicating superior fire resistance and safety performance. Overall Comparison and Recommendations Based on Modified Bitumen Properties: Specific Gravity: Natural rubber and plastic waste both increase the specific gravity compared to pure bitumen, indicating a denser material. Tire waste results in a lower specific gravity at 5% concentration, but it increases at higher concentrations. Ductility: Pure bitumen has the highest ductility. Plastic waste modification, particularly at 10%, retains higher ductility compared to tire waste and natural rubber, making it more flexible. Softening Point: Plastic waste increases the softening point slightly compared to pure bitumen, especially at 10% concentration. Tire waste increases the softening point at 5% but decreases at higher concentrations. Natural rubber decreases the softening point. Penetration: Tire waste results in the highest penetration values, indicating softer bitumen. Natural rubber also increases penetration values but to a lesser extent. Plastic waste results in the lowest penetration values, indicating harder bitumen, close to pure bitumen characteristics. Flash Point: All modifications significantly increase the flash point compared to pure bitumen, with plastic waste at 10% showing the highest flash point, indicating better resistance to ignition. Fire Point: All modified bitumen samples show significantly higher fire points compared to pure bitumen, with natural rubber at 10% showing the highest fire point. CONCLUSIONS The potential improvement of bitumen properties through the incorporation of waste plastic, rubber and natural rubber presents a promising opportunity to enhance the performance, durability, and sustainability of asphalt materials. Through extensive research and development efforts, it has become increasingly evident that these additives offer significant advantages in addressing key challenges in asphalt pavement construction and maintenance. Both natural rubber and plastic waste show promise in enhancing the properties of bitumen due to their higher specific gravities, which can lead to more durable pavements. Natural rubber, in particular, is recommended for its significant impact on increasing bitumen density. Tire waste, while useful, appears to be most effective at the 7.5% modification level. Plastic waste offers the best potential for maintaining the ductility of modified bitumen, making it the preferred choice for applications requiring high flexibility and durability. Natural rubber can be considered for its moderate performance, while tire waste, despite being a viable option for recycling purposes, may not be the optimal choice when ductility is a primary concern. Plastic waste is the most effective additive for improving the softening point of bitumen, with the 10% mixture offering the best high-temperature performance. Tire waste can also be beneficial at lower concentrations (5%), while natural rubber, despite its other potential benefits, tends to reduce the softening point and may not be ideal for applications requiring enhanced high-temperature resistance. Plastic waste is the most effective additive for maintaining the hardness of bitumen, followed by natural rubber. Tire waste results in a significant increase in penetration values, making it less suitable for applications requiring hard bitumen. The choice of additive should be based on the specific requirements of the application, with plastic waste being ideal for high-load conditions and tire waste potentially useful for applications needing more flexibility. Plastic waste offers the most significant improvement in flash point, making it the optimal choice for enhancing the safety of bitumen. Natural rubber also provides substantial safety benefits, particularly at higher concentrations. Tire waste, while effective, offers slightly lower improvements compared to plastic waste and natural rubber but still represents a considerable enhancement over pure bitumen. Natural rubber offers the most significant improvement in fire point, making it the optimal choice for enhancing the fire resistance of bitumen. Plastic waste also provides substantial safety benefits, particularly at higher concentrations. Tire waste, while effective, offers slightly lower improvements compared to natural rubber and plastic waste but still represents a considerable enhancement over pure bitumen. Plastic waste is the most effective modifier for maintaining or enhancing the desirable properties of bitumen. It provides a good balance of hardness (low penetration values), increased ductility, higher softening point, and significantly higher flash and fire points. The 10% plastic waste modification is particularly effective.Natural rubber provides a moderate increase in hardness and significantly improves fire resistance. The 7.5% natural rubber modification offers a good balance of properties and could be used in scenarios where increased fire resistance is crucial.While tire waste modification increases softness (higher penetration values) and ductility, it significantly improves fire and flash points. Tire waste could be suitable for applications where increased flexibility is needed and fire resistance is a priority, but less so where high hardness is required. In conclusion, plastic waste is recommended as the best modifier for improving bitumen properties for road construction, particularly at a 10% concentration. Natural rubber and tire waste can also be beneficial in specific applications depending on the requirements for fire resistance and flexibility. References Sivarasan S, Prabhu V (2016) Utilization of Waste Plastics & Carbon Rubber in Bitumen, 4, 5 Deshmukh NH, Kshirsagar DY (2017) Utilization Of Rubber Waste In Construction Of Flexible Pavement, Int. J. Adv. Res. Dev. , vol. 2, no. 7, pp. 70–77, Jul Hake SL, Damgir RM, Awsarmal PR (2020) Utilization of Plastic waste in Bitumen Mixes for Flexible Pavement. Transp Res Procedia 48:3779–3785. 10.1016/j.trpro.2020.08.041 Rahi DC, Chandak R, Vishwakarma A, OF THE INTERNATIONAL CONFERENCE ON SUSTAINABLE MATERIALS AND STRUCTURES FOR CIVIL INFRASTRUCTURES (SMSCI2019 (2019) Madhya Pradesh, India, Utilization of liquid plastic waste in bitumen for construction of roads, presented at the PROCEEDINGS), p. 020010. 10.1063/1.5127134 Abdullah ME, Ahmad NA, Jaya RP, Hassan NA, Yaacob H, Hainin MR (May 2017) Effects of Waste Plastic on the Physical and Rheological Properties of Bitumen. IOP Conf Ser Mater Sci Eng 204(1):012016. 10.1088/1757-899X/204/1/012016 Manju R (2017) Use of Plastic Waste in Bituminous Pavement. Int J ChemTech Res Vasudevan R, Nigam SK, Velkennedy R, Sekar ARC, Sundarakannan B Utilization of Waste Polymers for Flexible Pavement and Easy Disposal of Waste Polymers. Sustain Solid Waste Manag Kumar GR, Santhosh KS, Bharani S (2021) Influence of E-waste on properties of bituminous mixes, Mater. Today Proc. , vol. 37, pp. 2719–2724 Khaleel OR, Al LKN, Gharbi, Fayyadh MM (Jun. 2023) Enhancing Bitumen Properties through the Utilization of Waste Polyethylene Terephthalate and Tyre Rubber. Sustainability 15(12):9298. 10.3390/su15129298 Shoeb Ahmad M, Mahdi F (Oct. 2015) Characterization of Bitumen Mixed with Plastic Waste. Int J Transp Eng 3(2):85–91. 10.22119/ijte.2015.13834 Saifullah M, Hasan M, Debnath T, Rob MA, Tusar AH, Rabbani ML (2024) Investigation the Use of Waste Glass and Waste Paper as an Alternative Construction Binding Material: An Approach Towards Sustainable Environment. Am J Environ Econ 3(1):116–129. 10.54536/ajee.v3i1.3266 Appiah JK, Berko-Boateng VN, Tagbor TA (Jun. 2017) Use of waste plastic materials for road construction in Ghana. Case Stud Constr Mater 6:1–7. 10.1016/j.cscm.2016.11.001 Graphs Graphs 1 to 12 are available in the Supplementary Files section. Additional Declarations The authors declare no competing interests. Supplementary Files Graph1.png Graph 1: Bar Chart of Specific Gravity Graph2.png Graph 2: Bar Chart of Ductility Test Graph3.png Graph 3: Bar Chart of Softening Point Graph4.png Graph 4: Bar Chart of Penetration Test Graph5.png Graph‑5: Bar Chart of Flash Point Graph6.png Graph‑6: Bar Chart of Fire Point Graph7.png Graph‑7: Graph of Specific Gravity Graph8.png Graph ‑8: Graph of Ductility Graph9.png Graph‑9: Graph of Softening Point Graph10.png Graph 10: Graph of Penetration Graph11.png Graph‑11: Graph of Flash Point Graph12.png Graph 12: Graph of Fire Point Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7159732","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":487584347,"identity":"f099e83c-d925-40c7-8777-971e25365d67","order_by":0,"name":"Md. 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growth and development activities led to an increase in plastic waste, which is harmful to the environment. Waste management, especially solid waste management, is the most undeveloped sector of management worldwide. Every day, our country generates tons of rubbish. We have no idea how to properly dispose of solid garbage. It is not only our problem; it is a worldwide problem that is progressively making the world a less desirable place to live.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003eThe use of plastics in road building can significantly reduce this problem. The majority of the roads built here are bituminous. Plastics, as well as construction garbage, are widely employed as aggregate and filler substances in the construction of bituminous pavement. By combining polymers with bitumen, the amount of bitumen used may be lowered while the strength metrics are enhanced. This is the approach used by the authors in this study\u003c/p\u003e\n\u003cp\u003ePlastic is a material has a wide variety of synthetic and semi-synthetic characteristics which can be cast into a number of solid objects. It is user-friendly and long-lasting; however, it is not recyclable or biodegradable. It consists of a chemical bond that makes it strong and immune to natural degradation activities. Plastic is often used in the production of a wide range of products due to its low cost, water resistance, and ease of manufacture. Plastics are classified into two types: thermoplastics and thermoses. Thermoplastics are plastic polymer compounds that become mouldable at a specific extreme temperature and harden upon cooling. Thermoses - Thermoses is the form of plastics when they turn into solid. \u0026nbsp;This kind of plastic is very useful for its strength and long lifespan. Improvements in technology, wide sector, and consumer habits have accelerated the production of uncontrolled waste. Plastic and rubber, among other waste items, represent substantial issues since they are non-biodegradable and harmful to the environment. Proper plastic and tire \u0026nbsp; \u0026nbsp; rubber disposal is critical, especially in urban areas. Many nations have experienced a rise in the demand for asphalt modification using various types of polymers in recent years. The fundamental goal of bitumen and bituminous mix modification is to improve the characteristics and performance of bitumen mixtures.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003eThe addition of such material not only improves the physical characteristics of bitumen but also the mechanical performances of bituminous mixes. Bitumen modification increases resistance to rutting, fatigue, and thermal cracking. \u0026nbsp;Investigated the effect of rubber content on bitumen characteristics using various rubber content percentages and bitumen grades.\u003c/p\u003e\n\u003cp\u003eTheir studies show that increasing the rubber content improves penetration resistance. Materials improve bitumen softening points. According to their findings, raising the blending temperature increases the mass of tire rubber because of the rubber expansion during the mixing process. Furthermore, the study discovered that increasing the rubber component improves the stiffness qualities of bitumen.\u003c/p\u003e\n\u003cp\u003eThrough a combination of experimental investigations and analytical assessments, this research seeks to shed light on the potential benefits of waste properties incorporation in terms of improving bitumen properties and reducing the environmental pollution of construction materials. By understanding the use of waste properties interactions within the bituminous matrix, this study aims to contribute to the growing body of knowledge in sustainable construction practices and offer valuable insights.\u003c/p\u003e\n\u003cp\u003eThis study aims to shed on the possible advantages of waste properties inclusion in terms of increasing bitumen characteristics and minimizing environmental pollution from waste materials through a combination of experimental studies and analytical analyses. This study looks for to add to the increasing body of knowledge in waste practices by analyzing the usage of waste properties relations within the bituminous matrix and provide significant insights for researchers as well as professionals in this field Scope and Limitations.\u003c/p\u003e"},{"header":"LITERATURE REVIEW","content":"\u003cp\u003eSince plastic waste has such a negative effect on ecosystems, human health, and the state of the world as a whole, plastic garbage has become a major global environmental problem. Plastic waste is any material that has been wasted or abandoned, including packaging, containers, one-time use objects, and several other items created from synthetic polymers. This trash builds up in landfills, waterways, rivers, and even remote natural regions, leading to a number of issues on the social, economic, and environmental fronts.\u003c/p\u003e\n\u003cp\u003ePlastics are organic polymers made of components including carbon, hydrogen, oxygen, nitrogen, Sulphur, and chlorine, and they have a high molecular weight. Plastic serves as a bonding agent when heated. Plastic waste exhibits unique characteristics that make it potential for utilization in various application, such as in construction sector as well as in road construction. There are various types of plastic waste such as polyethylene, High-density polyethylene, Low-density polyethylene. Each type of plastic has some unique characteristics such as high ductility, light weight etc.\u003c/p\u003e\n\u003cp\u003eDue to its potential to solve environmental and economic issues, research into the use of plastic waste in bituminous materials has flourished in recent years. The authority in charge of road construction can aid in the fight against waste by doing its part to prevent plastic from going to landfills and instead using it as a supplement to conventional bitumen.\u003c/p\u003e\n\u003cp\u003eHowever, despite its useful properties, bitumen that includes plastic waste brings complications that call for extensive study. Potential difficulties stemming from plastic waste\u0026apos;s reactive nature, its impact on bitumen workability, setting times, and long-term behavior, and its variable composition necessitate careful examination. In order to provide a basis for the feasibility and performance evaluation of plastic waste as a replacement for a defined amount of bitumen, the following sections of this literature review will look into key studies and research findings that throw light on these elements.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eS.Sivarasan et al.\u0026nbsp;\u003c/strong\u003e[1] focus on the one of the valid and dangerous environmental pollutants plastic waste. The goal is to innovation of such kind of bitumen in which plastic waste and carbon rubber are used. The research explores plastic waste and carbon rubber innovative use in bitumen to replace a specified amount of bitumen, testing suitable properties like specific gravity, ductility, softening point, Marshall test. The study observes bituminous characteristics by replacing bitumen (60/70) grad with various proportion (5%, 7%, 9%) of plastic waste and carbon rubber waste tire. The result shows that up to 7% percent of plastic and tires to be added in bitumen and the modified bitumen have a high softening point of 92\u003csup\u003e0\u003c/sup\u003ec temperature which can be used in high temperature areas. The normal bitumen and waste plastic added bitumen is tested as per specifications in IRC: SP: 53:2010, IS 3370.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNitu H. Deshmukh et al.\u0026nbsp;\u003c/strong\u003e[2]\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003eemphasizes the cost minimization of the bitumen by mixing waste crumb rubber with bitumen. Now a days transportation system is developed as well as increasing the intensity of vehicle. As a result, waste of tires is increasing proportionally. Experiment replaces bitumen with waste crumb rubber at 0%, 8%, 10%, 12%, 14% to delivering improved physical qualities over traditional bitumen. Penetration test, Softening point test, Ductility test are conduct to get the physical properties of bitumen over modified mix bitumen. The result describes that increased amount of rubber waste decrease the penetration value which is a good sign for the road because it gives addition strength to the road and reduce additional damage. The experiment also shows that increased amount of rubber increases the softening point and the ductility of bitumen. The study investigates bituminous properties and optimal replacement (0%, 8%, 10%, 12%, 14%) of bitumen with crumb rubber, measuring conduct through penetration, softening point, ductility test.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eDr. S. L. Hake et al.\u0026nbsp;\u003c/strong\u003e[3]\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003efocus on the utilization of plastic waste for the development of adaptable asphalt and reduce resource consumption, environmental pollutant. The study utilize plastic of 5%, 7.5%, 10%, 12.5% and 15% as exchange of bitumen. samples were made, examined, and evaluated for Marshall test. In this study, it is discovered that the overall cost of plastic blend bitumen was 5.18% less expensive than standard bitumen.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eD. C. Rahi et al.\u003c/strong\u003e [4] described the improved environmental management by exploit of plastic waste in bitumen road construction. The aims of the study to develop the quality of bitumen by utilize some percentage (2%, 4%, 6%, 8%) of plastic waste to melted bitumen. Plastic wastes innovative use as subsidiary of bitumen was explored as an alternative to traditional bitumen. The study investigates the bituminous properties, assessing behaviour through penetration, softening point, ductility test. The bitumen 60/70 penetration grade was employed in this project. The result shows increase the softening point, viscosity and decrease the penetration value which improves the performance of bitumen.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMohd Ezree Abdullah et al.\u0026nbsp;\u003c/strong\u003e[5]\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003eunderscores the effects of plastic waste on rheological properties of bitumen. Disposal of plastic waste in an open area leads to environmental pollution such as water pollution, soil pollution, and sometimes air pollution when it is burned. The study focused on the mixing of plastic waste with bitumen to show the changes in the performance of bitumen. The result shows that up to 6% increase of plastic waste in bitumen decrease the penetration depth (55.3 to 24.1), increase the softening point (53 \u003csup\u003e0\u003c/sup\u003eC to 56 \u003csup\u003e0\u003c/sup\u003eC) and viscosity (1600 cP at 135 \u003csup\u003e0\u003c/sup\u003eC).\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eR.Manju et al.\u0026nbsp;\u003c/strong\u003e[6]\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003eaddresses the impact of global warming and pollution by disposal of plastic waste. The study focuses on the minimization of global warming, greenhouse gases and pollution by use of plastic waste in bitumen to make an eco-friendly environment. The experiment replaces 10% of bitumen by plastic waste and the result is so impressive that the softening point, viscosity increase and penetration value decrease according to increase of plastic.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eR. Vasudevan et al.\u0026nbsp;\u003c/strong\u003e[7]\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003einvestigates the disposal of various plastic wastes in an environmentally friendly manner. The experiment shows an ingenious method of constructing flexible pavement and making pathway blocks to form an eco-friendly solution for plastic waste. In this experiment, up to 10% plastic is used for the substitution of bitumen. A specified amount of plastic (1%, 2%, 3%, 5%, 10%) are used with bitumen to notice the changes of bituminous properties. Results show a proportional increase in ductility, softening point, and decrease in penetration of bitumen when using crumb rubber and a decrease in ductility when using plastics.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eG. Ramesh Kumar et al.\u0026nbsp;\u003c/strong\u003e[8]\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003efocus on the E-waste which are thrown into the environment without sufficient recycling treatment. Now a days E-Waste is rising as a result of a bigger growth in the utilization of electronic components. The study investigates the various percentages (0%, 6%, 12%, and 18%) of E-PCB waste used as a substitute for bitumen. Penetration test, Ductility, softening point, flash and fire point, viscosity, Specific gravity test are conduct to find the optimum ratio of E-waste powder in bitumen. The result shows 12% of E-waste powder in bitumen have the optimum quality.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eOmar R. Khaleel et al.\u003c/strong\u003e [9]\u0026nbsp;discuss about the Co-biodegradability issues and investigates the impact of incorporating waste plastic and rubber on the physical properties of bitumen. The experiment emphasizes on the development of bitumen to increase softening point. Various percentage (4% and 6%) of tire rubber and waste polyethylene terephthalate (PET) are used in bitumen with a grade of 85/100.The result indicate that 6% of waste PET and tire rubber as an additive in bitumen enhanced penetration value, softening point and viscosity.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMalik Shoeb Ahmad et al.\u0026nbsp;\u003c/strong\u003e[10]\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003eemphasizes the recycling of plastic waste into useful products since plastic waste has a harmful effect on the environment. Plastic (Polyethylene Terephthalate, PET) waste added in bitumen at various percentage (2% to 14%) in the experiment. For the characterization of plain bitumen and modified bitumen various test conducted. Between 10 and 12% of the bitumen\u0026apos;s weight, plastic waste concentration that is most effective is attained. The study\u0026apos;s findings showed that the modified mixture outperformed the non-modified bitumen in terms of performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eSaifullah\u003c/strong\u003e\u003cstrong\u003e\u0026nbsp;et al.\u003c/strong\u003e [11]\u0026nbsp;investigates the effects of blending waste . The study investigates various waste to use this waste in various ways. They investigate how this waste affects the environment and this waste can be used in various works.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAppiah et al.\u003c/strong\u003e [12] investigates the effects of blending waste thermoplastic polymers in Conventional AC‐20 graded bitumen. The study added up to 3% of plastic polymer in bitumen to observe the changes in rheological parameter between traditional bitumen and modified bitumen. Various test is conducted and at 3% polymer loading the most enhanced, homogenous blend is achieved. The paper emphasizes sustainable development in road construction by utilizing plastic waste.\u003c/p\u003e"},{"header":"MATERIALS AND METHODS","content":"\u003cp\u003eThis study\u0026apos;s methodology takes the form of an experimental investigation complete with empirical testing and analytical evaluations. This method allows for the systematic investigation of bitumen\u0026apos;s physical properties when plastic waste is substituted for a fixed volume of bitumen. The study\u0026apos;s blueprint consists of the following essential parts:\u003c/p\u003e\n\u003cp\u003e1. \u003cstrong\u003eMaterials Selection:\u003c/strong\u003e The research design relies heavily on the precision with which the raw materials are chosen. Bitumen, plastic waste (plastic bottle), rubber (tire tube), raw component of rubber are the main components of the researched mixed bitumen. Bitumen mixture design best practices inform the selection of these ingredients and their specific qualities and amounts.\u003c/p\u003e\n\u003cp\u003e2. \u003cstrong\u003eExperimental Setup:\u003c/strong\u003e Bitumen mixed with plastic waste and rubber will be prepared and tested in the project as a potential partial replacement for traditional bitumen. Various replacement levels (0%, 5%, 7.5%, 10%) are considered to evaluate the effects of plastic waste and raw rubber incorporation on bitumen properties.\u003c/p\u003e\n\u003cp\u003e3. \u003cstrong\u003eTesting\u0026nbsp;Protocol:\u003c/strong\u003e Bitumen\u0026apos;s physical properties are evaluated through a comprehensive Test. Standard test such as specific gravity, penetration, ductility, softening point, flash and fire point test are conduct to assess the influence of plastic waste replacement.\u003c/p\u003e\n\u003cp\u003e2. \u003cstrong\u003eBitumen Mixing:\u003c/strong\u003e Various percentage (0%, 5%, 7.5%, 10%) of selected materials (Plastic bottle, Tire tube, natural rubber) are mixed with bitumen by heating them together. The mixing process is carefully monitored to ensure uniformity.\u003c/p\u003e\n\u003cp\u003e3. \u003cstrong\u003eTesting and Analysis:\u003c/strong\u003e The cast specimens go through a series of mechanical and physical tests, including specific gravity, penetration, ductility, flash and fire point, softening point test. The collected information is examined to determine how much of an impact plastic waste and rubber replenishment has on the characteristics of the bitumen.\u003c/p\u003e\n\u003cp\u003e4. \u003cstrong\u003eData Interpretation and Conclusion:\u003c/strong\u003e It is determined whether or not plastic waste and rubber could be used as a specified replacement of traditional bitumen based on the analysis and interpretation of the data collected. The findings are presented in light of previous research and their potential applications.\u003c/p\u003e\n\u003ch2 id=\"_Toc168012444\"\u003eSPECIMEN PREPARATATION\u003c/h2\u003e\n\u003ch3 id=\"_Toc168012445\"\u003eMaterials Used\u003c/h3\u003e\n\u003cp\u003eWe chose the plastic waste and rubber to create the modified bitumen. The following are the raw ingredients that will be used to produce modified bitumen:\u003c/p\u003e\n\u003cp\u003e1. Bitumen\u003c/p\u003e\n\u003cp\u003e2. Tire tube (from garage)\u003c/p\u003e\n\u003cp\u003e3. Plastic bottle (from roadside)\u003c/p\u003e\n\u003cp\u003e4. Natural rubber (from rubber tree)\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eCutting and Melting\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003ePlastic and tire were cut the as a small size. Then the materials were put in different pot and melting them in an induction cooker. The material also melts by natural process (using fire), oven.\u003c/p\u003e\n\u003ch3\u003eMixing\u003c/h3\u003e\n\u003cp\u003eThe melted materials are weighted and mix with bitumen at various proportions (5%, 7.5%, and 10%). For mixing the different percentage of materials and bitumen were put in different pot. Then all the materials were mixed well with a metal rod and prepared them for further testing.\u0026nbsp;\u003c/p\u003e\n\u003ch2 id=\"_Toc168012448\"\u003eSpecimen Testing\u0026nbsp;\u003c/h2\u003e\n\u003cp\u003eA set of tests were performed to find the properties of the mixing bitumen. Following tests were performed:\u003c/p\u003e\n\u003col\u003e\n \u003cli\u003eSpecific Gravity\u003c/li\u003e\n \u003cli\u003eDuctility\u003c/li\u003e\n \u003cli\u003eSoftening Point\u003c/li\u003e\n \u003cli\u003ePenetration Test\u003c/li\u003e\n \u003cli\u003eFlash and Fire Point\u003c/li\u003e\n\u003c/ol\u003e"},{"header":"RESULTS AND DISCUSSION","content":"\u003cp\u003eResults and Discussion presents a comprehensive analysis of the various properties of Bitumen containing waste plastic, rubber, and natural rubber. The experimental findings and data obtained from the conducted tests are critically examined and discussed to evaluate the feasibility and effectiveness of using waste plastic, rubber, natural rubber in Bitumen.\u003c/p\u003e\n\u003ch3\u003eSpecific Gravity Test\u003c/h3\u003e\n\u003cp\u003eSpecific Gravity test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTable\u0026nbsp;\u003c/strong\u003e\u003cstrong\u003e1\u003c/strong\u003e\u003cstrong\u003e:\u0026nbsp;\u003c/strong\u003eSpecific Gravity with Different Types of mixed bitumen\u003c/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003eMaterials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 148px;\"\u003e\n \u003cp\u003ePercentage (%) of Materials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 148px;\"\u003e\n \u003cp\u003ePercentage (%) of pure Bitumen\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 148px;\"\u003e\n \u003cp\u003eSpecific Gravity\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.1707\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003eTire Tube\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.1208\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.10323\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.1707\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.27\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003eNatural Rubber\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.22\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.24\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.1707\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.252\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003ePlastic Waste\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.184\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 167px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 148px;\"\u003e\n \u003cp\u003e1.251\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003eComparison of mixed Bitumen with pure Bitumen: \u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe specific gravity of bitumen modified with various waste materials, such as tire waste, natural rubber, and plastic waste, is a critical parameter in evaluating the performance and suitability of these additives for road construction. The graph-1 compares the specific gravity values of pure bitumen and bitumen modified with different percentages of these waste materials, providing insights into which modification approach might be more advantageous.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTire Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Tire Waste\u003c/strong\u003e: The specific gravity is significantly lower (1) than pure bitumen. This reduction might indicate less dense mixtures, potentially impacting the structural integrity of the pavement negatively.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Tire Waste\u003c/strong\u003e: The specific gravity (1.1208) is closer to that of pure bitumen, suggesting better compatibility.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Tire Waste\u003c/strong\u003e: The specific gravity (1.10323) is also close to that of pure bitumen but slightly lower than the 7.5% mixture.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eOverall, 7.5% tire waste mixed with bitumen provides a specific gravity closest to pure bitumen, indicating a balanced approach between adding waste material and maintaining desirable properties.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNatural Rubber Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Natural Rubber\u003c/strong\u003e: The specific gravity (1.27) is higher than pure bitumen, indicating a denser mixture. This could potentially enhance the strength and durability of the pavement.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Natural Rubber\u003c/strong\u003e: The specific gravity (1.22) remains higher than pure bitumen but slightly lower than the 5% mixture.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Natural Rubber\u003c/strong\u003e: The specific gravity (1.24) is still higher than pure bitumen and shows a consistent trend of increased density with natural rubber.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eNatural rubber modifications consistently result in higher specific gravities than pure bitumen, suggesting potential improvements in pavement performance due to increased density. The 5% and 10% mixtures are particularly notable for their higher specific gravity values.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlastic Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Plastic Waste\u003c/strong\u003e: The specific gravity (1.252) is higher than pure bitumen, indicating increased density.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Plastic Waste\u003c/strong\u003e: The specific gravity (1.184) is closer to pure bitumen, suggesting a balanced mixture.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Plastic Waste\u003c/strong\u003e: The specific gravity (1.251) is very similar to the 5% mixture, indicating a consistent increase in density with higher plastic content.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003ePlastic waste modifications also show an increase in specific gravity compared to pure bitumen, with the 5% and 10% mixtures providing higher densities, potentially enhancing pavement strength and durability.\u003c/p\u003e\n\u003ch3\u003eDuctility Test\u003c/h3\u003e\n\u003cp\u003eDuctility test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTable\u0026nbsp;\u003c/strong\u003e\u003cstrong\u003e2\u003c/strong\u003e\u003cstrong\u003e:\u003c/strong\u003e Ductility with Different Types of mixed bitumen\u003c/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eMaterials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003ePercentage (%) of Materials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003ePercentage (%) of pure Bitumen\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003eDuctility (cm)\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e81.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e42\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eTire Tube\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e37.6\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e41.1\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e81.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e40\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eNatural Rubber\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e37.7\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e39\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e81.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e45.2\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003ePlastic Waste\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e43.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e52.2\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003eComparison of mixed Bitumen with pure Bitumen: \u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eDuctility is a crucial property of bitumen that measures its ability to undergo significant deformation before breaking. High ductility is typically desirable for ensuring the flexibility and durability of asphalt pavements. This chapter compares the ductility values of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTire Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Tire Waste\u003c/strong\u003e: The ductility decreases significantly to 42.0 cm, which is roughly half of the ductility of pure bitumen.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Tire Waste\u003c/strong\u003e: The ductility further decreases to 37.6 cm, indicating reduced flexibility.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Tire Waste\u003c/strong\u003e: The ductility improves slightly to 41.1 cm but is still much lower than pure bitumen.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eOverall, adding tire waste reduces the ductility of bitumen significantly, which might impact the flexibility and performance of the pavement. The best performance among the tire waste mixtures is seen at 5% tire waste, but it still represents a significant decrease in ductility compared to pure bitumen.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNatural Rubber Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Natural Rubber\u003c/strong\u003e: The ductility decreases to 40.0 cm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Natural Rubber\u003c/strong\u003e: The ductility decreases slightly further to 37.7 cm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Natural Rubber\u003c/strong\u003e: The ductility is 39.0 cm.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eNatural rubber also reduces the ductility of bitumen, although the reduction is somewhat similar to that seen with tire waste. The 10% natural rubber mixture shows a slight improvement over the 7.5% mixture but still represents a considerable reduction from pure bitumen.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlastic Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Plastic Waste\u003c/strong\u003e: The ductility decreases to 45.2 cm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Plastic Waste\u003c/strong\u003e: The ductility decreases to 43.3 cm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Plastic Waste\u003c/strong\u003e: The ductility increases to 52.2 cm, which is closer to the original ductility of pure bitumen.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003ePlastic waste modifications, while reducing ductility compared to pure bitumen, show the least reduction among the three types of waste. Particularly, the 10% plastic waste mixture stands out with a ductility of 52.2 cm, the highest among all modified bitumen mixtures, and closest to the ductility of pure bitumen.\u003c/p\u003e\n\u003ch3\u003eSoftening Point\u003c/h3\u003e\n\u003cp\u003eSoftening Point test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTable\u0026nbsp;\u003c/strong\u003e\u003cstrong\u003e3\u003c/strong\u003e\u003cstrong\u003e:\u0026nbsp;\u003c/strong\u003eSoftening Point with Different Types of mixed bitumen\u003c/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eMaterials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003ePercentage (%) of Materials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003ePercentage (%) of pure Bitumen\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003eSoftening Point (˚c)\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e59.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e62.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eTire Tube\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e57.525\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e56.545\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e59.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e57.11\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eNatural Rubber\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e54.19\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e53.76\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e59.3\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e60.32\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003ePlastic Waste\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e59.97\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e61.96\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003eComparison of mixed Bitumen with pure Bitumen: \u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe softening point of bitumen is a measure of its temperature susceptibility, indicating the temperature at which the bitumen transitions from a semi-solid to a liquid state. Higher softening points generally indicate better performance in high-temperature conditions. This chapter compares the softening points of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTire Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Tire Waste\u003c/strong\u003e: The softening point increases to 62.3˚C, indicating an improvement in high-temperature performance.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Tire Waste\u003c/strong\u003e: The softening point decreases to 57.525˚C, which is lower than pure bitumen.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Tire Waste\u003c/strong\u003e: The softening point further decreases to 56.545˚C, indicating a reduction in high-temperature performance.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eOverall, while the 5% tire waste mixture shows an improved softening point, higher concentrations of tire waste led to decreased softening points, suggesting that lower percentages of tire waste are more beneficial for high-temperature performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNatural Rubber Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Natural Rubber\u003c/strong\u003e: The softening point decreases to 57.11˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Natural Rubber\u003c/strong\u003e: The softening point further decreases to 54.19˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Natural Rubber\u003c/strong\u003e: The softening point decreases to 53.76˚C.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eNatural rubber consistently lowers the softening point of bitumen, indicating a reduction in high-temperature performance across all tested concentrations.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlastic Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Plastic Waste\u003c/strong\u003e: The softening point increases to 60.32˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Plastic Waste\u003c/strong\u003e: The softening point remains close to that of pure bitumen at 59.97˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Plastic Waste\u003c/strong\u003e: The softening point increases significantly to 61.96˚C, indicating improved high-temperature performance.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003ePlastic waste modifications show an increase in softening points, particularly at 5% and 10% concentrations, suggesting enhanced high-temperature performance.\u003c/p\u003e\n\u003ch3\u003ePenetration Test\u003c/h3\u003e\n\u003cp\u003ePenetration test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber and plastic waste.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTable\u0026nbsp;\u003c/strong\u003e\u003cstrong\u003e4\u003c/strong\u003e\u003cstrong\u003e:\u0026nbsp;\u003c/strong\u003ePenetration with Different Types of mixed bitumen\u003c/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eMaterials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003ePercentage (%) of Materials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003ePercentage (%) of pure Bitumen\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 140px;\"\u003e\n \u003cp\u003ePenetration (mm)\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0.1\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e2.236\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eTire Tube\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e2.361\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e2.460\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0.1\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e1.65\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003eNatural Rubber\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e1.402\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e1.538\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0.1\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0.968\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003ePlastic Waste\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e1.005\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 159px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 140px;\"\u003e\n \u003cp\u003e0.988\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003eComparison of mixed Bitumen with pure Bitumen: \u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe penetration value of bitumen is a critical parameter that measures the hardness or softness of the material, indicating how much the bitumen will deform under a standard load at a given temperature. Lower penetration values indicate harder bitumen, which is generally more desirable for heavy traffic conditions. This chapter compares the penetration values of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTire Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Tire Waste\u003c/strong\u003e: Penetration increases to 2.236 mm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Tire Waste\u003c/strong\u003e: Penetration increases further to 2.361 mm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Tire Waste\u003c/strong\u003e: Penetration increases to 2.460 mm.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eAdding tire waste results in a significant increase in the penetration value, indicating softer bitumen. This increase in softness may be less suitable for applications requiring high hardness and load-bearing capacity.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNatural Rubber Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Natural Rubber\u003c/strong\u003e: Penetration increases to 1.65 mm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Natural Rubber\u003c/strong\u003e: Penetration decreases to 1.402 mm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Natural Rubber\u003c/strong\u003e: Penetration slightly increases to 1.538 mm.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eNatural rubber modifications result in a moderate increase in penetration value, making the bitumen softer but still within acceptable ranges for certain applications. The 7.5% mixture provides the lowest penetration value among the natural rubber samples, indicating better performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlastic Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Plastic Waste\u003c/strong\u003e: Penetration increases to 0.968 mm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Plastic Waste\u003c/strong\u003e: Penetration slightly increases to 1.005 mm.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Plastic Waste\u003c/strong\u003e: Penetration slightly decreases to 0.988 mm.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003ePlastic waste modifications lead to the smallest increase in penetration values compared to pure bitumen, indicating that plastic waste helps maintain harder bitumen. The penetration values remain relatively low, showing that plastic waste modification maintains the desirable hardness of bitumen.\u003c/p\u003e\n\u003ch3\u003eFlash and Fire Point Test\u003c/h3\u003e\n\u003cp\u003eFlash and Fire Point test is performed and various data are collected to see the difference between the bitumen sample mixed with tire tube, natural rubber, plastic waste.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTable\u0026nbsp;\u003c/strong\u003e\u003cstrong\u003e5\u003c/strong\u003e\u003cstrong\u003e:\u0026nbsp;\u003c/strong\u003eFlash and Fire Point with Different Types of mixed bitumen\u003c/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"618\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003eMaterials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 136px;\"\u003e\n \u003cp\u003ePercentage (%) of Materials\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 132px;\"\u003e\n \u003cp\u003ePercentage (%) of pure Bitumen\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003eFlash Point (˚c)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003eFire Point (˚c)\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e80\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e115\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e231\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e335\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003eTire Tube\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e235\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e342\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e240\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e350\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e80\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e115\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e220\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e322\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003eNatural Rubber\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e260\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e335\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e278\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e369\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e0\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e100\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e80\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e115\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e95\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e220\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e340\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003ePlastic Waste\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e7.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e92.5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e260\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e353\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 110px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 136px;\"\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 132px;\"\u003e\n \u003cp\u003e90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 120px;\"\u003e\n \u003cp\u003e283\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"top\" style=\"width: 120px;\"\u003e\n \u003cp\u003e358\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003eComparison of mixed Bitumen with pure Bitumen: \u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlash Point:\u0026nbsp;\u003c/strong\u003eThe flash point of bitumen is a crucial safety parameter, indicating the temperature at which bitumen emits vapours that can ignite in air. Higher flash points indicate better safety and lower risk of fire during handling and application. This chapter compares the flash points of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best safety performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTire Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Tire Waste\u003c/strong\u003e: The flash point increases significantly to 231˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Tire Waste\u003c/strong\u003e: The flash point further increases to 235˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Tire Waste\u003c/strong\u003e: The flash point increases to 240˚C.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThe incorporation of tire waste significantly increases the flash point of bitumen, indicating a substantial improvement in safety and fire resistance. Higher concentrations of tire waste result in progressively higher flash points.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNatural Rubber Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Natural Rubber\u003c/strong\u003e: The flash point increases to 220˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Natural Rubber\u003c/strong\u003e: The flash point significantly increases to 260˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Natural Rubber\u003c/strong\u003e: The flash point further increases to 278˚C.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eNatural rubber also substantially increases the flash point of bitumen. The 10% natural rubber mixture offers the highest flash point among the natural rubber modifications, indicating excellent safety performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlastic Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Plastic Waste\u003c/strong\u003e: The flash point increases to 220˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Plastic Waste\u003c/strong\u003e: The flash point increases significantly to 260˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Plastic Waste\u003c/strong\u003e: The flash point further increases to 283˚C.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003ePlastic waste modifications provide the highest increases in flash point among all additives. The 10% plastic waste mixture reaches the highest flash point (283˚C), indicating superior fire resistance and safety performance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eFire Point:\u0026nbsp;\u003c/strong\u003eThe fire point of bitumen is a critical safety measure, indicating the temperature at which the bitumen will sustain burning after being ignited. A higher fire point signifies greater safety and resistance to combustion. This chapter compares the fire points of pure bitumen with bitumen modified using various waste materials (tire waste, natural rubber, and plastic waste) to determine which modification offers the best fire resistance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eTire Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Tire Waste\u003c/strong\u003e: The fire point increases significantly to 335˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Tire Waste\u003c/strong\u003e: The fire point further increases to 342˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Tire Waste\u003c/strong\u003e: The fire point increases to 350˚C.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThe incorporation of tire waste significantly increases the fire point of bitumen, indicating improved fire resistance. Higher concentrations of tire waste lead to progressively higher fire points, enhancing the material\u0026apos;s safety.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNatural Rubber Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Natural Rubber\u003c/strong\u003e: The fire point increases to 322˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Natural Rubber\u003c/strong\u003e: The fire point increases to 335˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Natural Rubber\u003c/strong\u003e: The fire point significantly increases to 369˚C.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eNatural rubber modifications result in substantial increases in fire point. The 10% natural rubber mixture provides the highest fire point among the natural rubber modifications, indicating excellent fire resistance.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlastic Waste Modified Bitumen:\u003c/strong\u003e\u003c/p\u003e\n\u003cul type=\"disc\"\u003e\n \u003cli\u003e\u003cstrong\u003e5% Plastic Waste\u003c/strong\u003e: The fire point increases to 340˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e7.5% Plastic Waste\u003c/strong\u003e: The fire point increases significantly to 353˚C.\u003c/li\u003e\n \u003cli\u003e\u003cstrong\u003e10% Plastic Waste\u003c/strong\u003e: The fire point further increases to 358˚C.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003ePlastic waste modifications also result in significant increases in fire point. The 10% plastic waste mixture achieves a fire point of 358˚C, indicating superior fire resistance and safety performance.\u003c/p\u003e\n\u003ch3\u003eOverall Comparison and Recommendations Based on Modified Bitumen Properties:\u003c/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSpecific Gravity:\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eNatural rubber and plastic waste both increase the specific gravity compared to pure bitumen, indicating a denser material. Tire waste results in a lower specific gravity at 5% concentration, but it increases at higher concentrations.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eDuctility:\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003ePure bitumen has the highest ductility. Plastic waste modification, particularly at 10%, retains higher ductility compared to tire waste and natural rubber, making it more flexible.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoftening Point:\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003ePlastic waste increases the softening point slightly compared to pure bitumen, especially at 10% concentration. Tire waste increases the softening point at 5% but decreases at higher concentrations. Natural rubber decreases the softening point.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003ePenetration:\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eTire waste results in the highest penetration values, indicating softer bitumen. Natural rubber also increases penetration values but to a lesser extent. Plastic waste results in the lowest penetration values, indicating harder bitumen, close to pure bitumen characteristics.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlash Point:\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eAll modifications significantly increase the flash point compared to pure bitumen, with plastic waste at 10% showing the highest flash point, indicating better resistance to ignition.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eFire Point:\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eAll modified bitumen samples show significantly higher fire points compared to pure bitumen, with natural rubber at 10% showing the highest fire point.\u003c/p\u003e"},{"header":"CONCLUSIONS","content":"\u003cp\u003eThe potential improvement of bitumen properties through the incorporation of waste plastic, rubber and natural rubber presents a promising opportunity to enhance the performance, durability, and sustainability of asphalt materials. Through extensive research and development efforts, it has become increasingly evident that these additives offer significant advantages in addressing key challenges in asphalt pavement construction and maintenance.\u003c/p\u003e\n\u003cp\u003eBoth natural rubber and plastic waste show promise in enhancing the properties of bitumen due to their higher specific gravities, which can lead to more durable pavements. Natural rubber, in particular, is recommended for its significant impact on increasing bitumen density. Tire waste, while useful, appears to be most effective at the 7.5% modification level. Plastic waste offers the best potential for maintaining the ductility of modified bitumen, making it the preferred choice for applications requiring high flexibility and durability. Natural rubber can be considered for its moderate performance, while tire waste, despite being a viable option for recycling purposes, may not be the optimal choice when ductility is a primary concern. Plastic waste is the most effective additive for improving the softening point of bitumen, with the 10% mixture offering the best high-temperature performance. Tire waste can also be beneficial at lower concentrations (5%), while natural rubber, despite its other potential benefits, tends to reduce the softening point and may not be ideal for applications requiring enhanced high-temperature resistance. Plastic waste is the most effective additive for maintaining the hardness of bitumen, followed by natural rubber. Tire waste results in a significant increase in penetration values, making it less suitable for applications requiring hard bitumen. The choice of additive should be based on the specific requirements of the application, with plastic waste being ideal for high-load conditions and tire waste potentially useful for applications needing more flexibility. Plastic waste offers the most significant improvement in flash point, making it the optimal choice for enhancing the safety of bitumen. Natural rubber also provides substantial safety benefits, particularly at higher concentrations. Tire waste, while effective, offers slightly lower improvements compared to plastic waste and natural rubber but still represents a considerable enhancement over pure bitumen. Natural rubber offers the most significant improvement in fire point, making it the optimal choice for enhancing the fire resistance of bitumen. Plastic waste also provides substantial safety benefits, particularly at higher concentrations. Tire waste, while effective, offers slightly lower improvements compared to natural rubber and plastic waste but still represents a considerable enhancement over pure bitumen.\u003c/p\u003e\n\u003cp\u003ePlastic waste is the most effective modifier for maintaining or enhancing the desirable properties of bitumen. It provides a good balance of hardness (low penetration values), increased ductility, higher softening point, and significantly higher flash and fire points. The 10% plastic waste modification is particularly effective.Natural rubber provides a moderate increase in hardness and significantly improves fire resistance. The 7.5% natural rubber modification offers a good balance of properties and could be used in scenarios where increased fire resistance is crucial.While tire waste \u0026nbsp;modification increases softness (higher penetration values) and ductility, it significantly improves fire and flash points. Tire waste could be suitable for applications where increased flexibility is needed and fire resistance is a priority, but less so where high hardness is required.\u003c/p\u003e\n\u003cp\u003eIn conclusion, plastic waste is recommended as the best modifier for improving bitumen properties for road construction, particularly at a 10% concentration. Natural rubber and tire waste can also be beneficial in specific applications depending on the requirements for fire resistance and flexibility.\u003c/p\u003e"},{"header":"References","content":"\u003col\u003e\u003cli\u003e\u003cspan\u003eSivarasan S, Prabhu V (2016) Utilization of Waste Plastics \u0026amp; Carbon Rubber in Bitumen, 4, 5\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eDeshmukh NH, Kshirsagar DY (2017) Utilization Of Rubber Waste In Construction Of Flexible Pavement, \u003cem\u003eInt. J. Adv. Res. Dev.\u003c/em\u003e, vol. 2, no. 7, pp. 70\u0026ndash;77, Jul\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eHake SL, Damgir RM, Awsarmal PR (2020) Utilization of Plastic waste in Bitumen Mixes for Flexible Pavement. Transp Res Procedia 48:3779\u0026ndash;3785. \u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.trpro.2020.08.041\u003c/span\u003e\u003cspan address=\"10.1016/j.trpro.2020.08.041\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eRahi DC, Chandak R, Vishwakarma A, OF THE INTERNATIONAL CONFERENCE ON SUSTAINABLE MATERIALS AND STRUCTURES FOR CIVIL INFRASTRUCTURES (SMSCI2019 (2019) Madhya Pradesh, India, Utilization of liquid plastic waste in bitumen for construction of roads, presented at the PROCEEDINGS), p. 020010. \u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1063/1.5127134\u003c/span\u003e\u003cspan address=\"10.1063/1.5127134\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eAbdullah ME, Ahmad NA, Jaya RP, Hassan NA, Yaacob H, Hainin MR (May 2017) Effects of Waste Plastic on the Physical and Rheological Properties of Bitumen. IOP Conf Ser Mater Sci Eng 204(1):012016. \u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1088/1757-899X/204/1/012016\u003c/span\u003e\u003cspan address=\"10.1088/1757-899X/204/1/012016\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eManju R (2017) Use of Plastic Waste in Bituminous Pavement. Int J ChemTech Res\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eVasudevan R, Nigam SK, Velkennedy R, Sekar ARC, Sundarakannan B Utilization of Waste Polymers for Flexible Pavement and Easy Disposal of Waste Polymers. Sustain Solid Waste Manag\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eKumar GR, Santhosh KS, Bharani S (2021) Influence of E-waste on properties of bituminous mixes, \u003cem\u003eMater. Today Proc.\u003c/em\u003e, vol. 37, pp. 2719\u0026ndash;2724\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eKhaleel OR, Al LKN, Gharbi, Fayyadh MM (Jun. 2023) Enhancing Bitumen Properties through the Utilization of Waste Polyethylene Terephthalate and Tyre Rubber. Sustainability 15(12):9298. \u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.3390/su15129298\u003c/span\u003e\u003cspan address=\"10.3390/su15129298\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eShoeb Ahmad M, Mahdi F (Oct. 2015) Characterization of Bitumen Mixed with Plastic Waste. Int J Transp Eng 3(2):85\u0026ndash;91. \u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.22119/ijte.2015.13834\u003c/span\u003e\u003cspan address=\"10.22119/ijte.2015.13834\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eSaifullah M, Hasan M, Debnath T, Rob MA, Tusar AH, Rabbani ML (2024) Investigation the Use of Waste Glass and Waste Paper as an Alternative Construction Binding Material: An Approach Towards Sustainable Environment. Am J Environ Econ 3(1):116\u0026ndash;129. \u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.54536/ajee.v3i1.3266\u003c/span\u003e\u003cspan address=\"10.54536/ajee.v3i1.3266\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003cli\u003e\u003cspan\u003eAppiah JK, Berko-Boateng VN, Tagbor TA (Jun. 2017) Use of waste plastic materials for road construction in Ghana. Case Stud Constr Mater 6:1\u0026ndash;7. \u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.cscm.2016.11.001\u003c/span\u003e\u003cspan address=\"10.1016/j.cscm.2016.11.001\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003c/li\u003e\u003c/ol\u003e"},{"header":"Graphs","content":"\u003cp\u003eGraphs 1 to 12 are available in the Supplementary Files section.\u003c/p\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":true,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"Barishal Engineering College","isAcceptedByJournal":false,"isAuthorSuppliedPdf":false,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Waste Plastic, waste rubber, properties of bitumen, performance, eco-friendly","lastPublishedDoi":"10.21203/rs.3.rs-7159732/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7159732/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eBitumen, a vital component in various construction applications, is undergoing innovative enhancements to improve its properties and sustainability. This study explores the potential of incorporating waste plastic, waste rubber, and natural rubber (5%, 7.5%, 10%) into bitumen formulations to enhance its performance characteristics. Waste plastic and rubber materials, which pose significant environmental challenges due to their non-biodegradable nature, are being repurposed as additives in bitumen to address both waste management concerns and improve asphalt properties. Similarly, natural rubber, derived from renewable sources, offers opportunities to enhance bitumen properties while reducing dependency on fossil fuel-derived additives. Through a comprehensive review of existing literature and experimental data, this study evaluates the effects of incorporating waste plastic, rubber, and natural rubber on key bitumen properties. The properties of bitumen are measured by specific gravity test, ductility test, softening point test, penetration test, and flash and fire point test. The findings highlight the potential benefits of these additives in improving the performance and sustainability of bitumen-based materials in road construction, pavement rehabilitation, and waterproofing applications. Moreover, the study discusses challenges, including compatibility issues, optimal dosage levels, and long-term performance, and proposes avenues for future research to optimize the utilization of waste plastic, rubber, and natural rubber in bitumen formulations, thereby contributing to the development of eco-friendly and high-performance asphalt materials.\u003c/p\u003e","manuscriptTitle":"Potential Improvement of Bitumen Properties Using Waste Plastic, Rubber and Natural Rubber: an Eco-Friendly Approch","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-07-21 14:34:10","doi":"10.21203/rs.3.rs-7159732/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"dd289a7c-7a00-4bac-931f-4626b53d2362","owner":[],"postedDate":"July 21st, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":51869815,"name":"Environmental Engineering"}],"tags":[],"updatedAt":"2025-07-21T14:34:10+00:00","versionOfRecord":[],"versionCreatedAt":"2025-07-21 14:34:10","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7159732","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7159732","identity":"rs-7159732","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}