Investigating The Potential of Recycled Steel Fibers in Concrete

Investigating The Potential of Recycled Steel Fibers in Concrete | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Investigating The Potential of Recycled Steel Fibers in Concrete Kazi Shahariar Hasan, Kazi Md. Mostafizur Rahman, Ayon Biswas, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4478706/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 Concrete is a fundamental material in civil engineering, ubiquitous in construction projects due to its low cost and versatility. However, its inherent brittleness makes it susceptible to abrupt failure under tension, despite its high compressive strength. To address this limitation, various reinforcement techniques have been developed, including Fiber-Reinforced Concrete (FRC). FRC integrates randomly dispersed fibers into the concrete matrix to control hairline cracks and enhance mechanical properties. Steel Fiber-Reinforced Concrete (SFRC) is a notable method wherein short steel fibers are added to the mix. These fibers, with lengths ranging from 15 mm to 70 mm and aspect ratios (AR) from 20 to 100, improve impact resistance, flexural strength, and other desirable properties. This study investigates the use of recycled steel fibers in concrete, aiming to develop an eco-friendly and high-performance construction material. Recycled fibers, sourced from scrap yards, smelters, and other facilities, were analyzed for their mechanical behavior in comparison to conventional concrete. Laboratory tests revealed that an optimal dosage of 1–1.5% of recycled steel fibers with an aspect ratio around 75 improves concrete strength. After casting and testing concrete cylinders and beams, it was observed that strength initially increased up to 1.5% fiber dosage but then plateaued or decreased. This reduction in strength beyond 1.5% may be attributed to decreased concrete cohesiveness and disturbance introduced by the recycled steel fibers. Thus, careful consideration of fiber dosage is crucial for optimizing concrete performance. SFRC Recycled Steel Compressive strength Flexural strength Hooked-end steel fiber Optimum Value Full Text Additional Declarations No competing interests reported. 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-4478706","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":310757318,"identity":"b7a38141-dbdb-4f6f-be1a-ed2cdf3dd8e7","order_by":0,"name":"Kazi Shahariar Hasan","email":"","orcid":"","institution":"Ahsanullah University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Kazi","middleName":"Shahariar","lastName":"Hasan","suffix":""},{"id":310757319,"identity":"012fdc72-a3b8-496a-8711-faad555cf0d8","order_by":1,"name":"Kazi Md. 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However, its inherent brittleness makes it susceptible to abrupt failure under tension, despite its high compressive strength. To address this limitation, various reinforcement techniques have been developed, including Fiber-Reinforced Concrete (FRC). FRC integrates randomly dispersed fibers into the concrete matrix to control hairline cracks and enhance mechanical properties. Steel Fiber-Reinforced Concrete (SFRC) is a notable method wherein short steel fibers are added to the mix. These fibers, with lengths ranging from 15 mm to 70 mm and aspect ratios (AR) from 20 to 100, improve impact resistance, flexural strength, and other desirable properties. This study investigates the use of recycled steel fibers in concrete, aiming to develop an eco-friendly and high-performance construction material. Recycled fibers, sourced from scrap yards, smelters, and other facilities, were analyzed for their mechanical behavior in comparison to conventional concrete. 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