An Experimental Study on Mechanical Properties of Zero Cement Concrete

Abstract The cement industry promotes global warming and energy consumption. Sustainable waste can be used as a green binder providing a unique approach to sustainability. This paper aims to study on physical and mechanical properties of zero cement mortar cubes and zero cement concrete cubes of 7 different Mix Proportions using 1:1 and 1:2 ratios of sodium hydroxide of 8Molarity & sodium silicate alkaline solution. The binder is made out of fly ash, GGBS, metakaolin, lime, and gypsum. The results of the consistency, setting time, and compression strength tests were used to calculate the percentage of the chemical constituents in the zero cement mortars. By employing the Dry Density Method to remove voids and dense the concrete mix, an approach for determining mix proportions for a desired compression strength of 60 MPa was presented based on the performance of binders. The data reveal that zero cement concrete demonstrates higher strength in compressive testing compared to standard OPC Moreover, as the percentage of GGBS increases the maximum compressive strength rises at 28 days.