Analysis of Concrete with Partial Replacement of Coarse Aggregate by using E-Waste - A Review

Abstract: - The rapid growth of electronic industries and technological advancements has resulted in a significant increase in electronic waste (E-waste) generation worldwide. Disposal of E-waste has become a serious environmental concern due to the presence of toxic and non-biodegradable materials. At the same time, the construction industry is facing a shortage of natural resources such as aggregates. To address both issues simultaneously, researchers have explored the possibility of utilizing E-waste as a partial replacement for coarse and fine aggregates in concrete. This review paper presents a comprehensive analysis of previous studies on the use of E-waste in concrete. Various research findings related to mechanical properties such as compressive strength, flexural strength, tensile strength, workability, and durability are critically examined. The review indicates that E-waste can be effectively used up to an optimum replacement level (generally 5%–15%) without significantly affecting the strength of concrete. Beyond this range, a reduction in strength is observed due to poor bonding and lower stiffness of E-waste materials. The study also highlights the environmental benefits, including reduction in landfill waste, conservation of natural aggregates, and development of sustainable construction materials. However, challenges such as lack of standardization, long-term durability concerns, and limited field applications still exist. This paper identifies key research gaps and suggests future directions for large-scale implementation of E-waste concrete.