Mechanical performance of sustainable concrete incorporating composite waste materials

Abstract

This study discusses the mechanical properties of concrete mix with waste materials composed of electronic waste, steel scrap, and ceramic waste, referred to as composite waste. Incorporating such waste materials into concrete mixes is a sustainable solution for the construction industry and ecological rehabilitation. The composite waste was substituted for coarse aggregate material in proportions of 0%, 5%, 10%, and 15% in producing M-15 grade concrete with a constant water to cement ratio of 0.40. In total, 72 specimens were tested and cured for 7 days, 14 days, and 28 days. The effects of composite waste on workability, compressive strength, and flexural characteristics of the proposed mix were evaluated and compared with the conventional mix. The experimental observations revealed that incorporating composite waste into the concrete mix enhanced the compressive and flexural strengths of the concrete. This indicates that it is feasible to use composite waste as a coarse aggregate replacement material to produce concrete with acceptable performance.