Abstract- Concrete is the most widely used construction material in the world due to its strength, durability, and versatility. However, the rapid growth in infrastructure development has led to excessive consumption of natural resources such as coarse aggregates, resulting in environmental degradation and resource depletion. At the same time, the generation of electronic waste (E-waste) has increased significantly due to rapid technological advancements and frequent replacement of electronic devices. Improper disposal of E-waste leads to serious environmental and health hazards because it contains toxic substances such as lead, mercury, and cadmium. This study focuses on the experimental investigation of concrete with partial replacement of coarse aggregate using E-waste materials. The primary objective is to evaluate the feasibility of utilizing E-waste as an alternative construction material and to determine the optimum replacement percentage that provides desirable strength and performance. In this research work, M30 grade concrete was selected for mix design as per IS 10262:2009. Coarse aggregate was partially replaced with E-waste at different percentages of 0%, 10%, 15%, and 20%. Various tests were conducted on both fresh and hardened concrete. Fresh concrete properties such as workability (slump test), air content, bleeding, and setting time were studied. Hardened concrete properties including compressive strength, split tensile strength, and flexural strength were evaluated at curing periods of 7, 14, and 28 days. The experimental results indicate that the incorporation of E-waste affects both fresh and hardened properties of concrete. Workability was observed to decrease slightly with an increase in E-waste content due to the irregular shape and lower bonding characteristics of E-waste particles. However, the strength properties showed improvement up to a certain level of replacement. The compressive strength, split tensile strength, and flexural strength increased up to 15% replacement and then showed a marginal reduction at 20% replacement.
Deshmukh et al. (Sat,) studied this question.