Investigation on the Performance of Concrete Using E-Waste as a Partial Coarse Aggregate Replacement

Abstract -Concrete is one of the most essential materials in civil engineering, and the addition or replacement of certain constituents can significantly alter its performance and sustainability. This study investigates the performance of concrete by partially replacing coarse aggregate with e-waste. M30 grade concrete was selected for the mix design. The properties and characteristics of cement, fine aggregate, coarse aggregate, and supplementary materials were examined in accordance with Indian Standard specifications. Compressive strength, split tensile strength, and flexural strength tests were conducted for different replacement levels of coarse aggregate: 0%, 10%, 15%, and 20%. The results indicate that at 15% partial replacement of coarse aggregate with e-waste, the concrete achieved higher compressive strength at both 7 and 28 days. Therefore, the optimum content of e-waste as a partial replacement for coarse aggregate was determined to be 15%.