Use of waste clay brick powder as a partial replacement binder in geo-polymer concrete

Geopolymer concrete is gaining as a sustainable alternative to traditional concrete due to its lower carbon footprint and use of industrial by-products. This study thoroughly examines the effectiveness of incorporating waste clay brick as a partial replacement binder in geopolymer concrete, specifically aiming to reduce environmental impact and improve mechanical and durability properties. Various geopolymer concrete formulations were methodically developed, with the inclusion of waste clay brick as a supplementary binder material at different replacement levels. Compressive strength, flexural strength, and split tensile strength exhibit promising results, with certain mix proportions showing enhanced performance compared to the control mix. Based on waste clay brick samples tested, the compressive strengths for both 20% and 30% binder samples remained between 25 MPa and 27 MPa. The flexural strength and the split tensile strength of the binder specimens showed nearly maximum higher strength. The reduction in water absorption also signifies enhanced long-term durability which was found to have 2 – 3%. Compared to GPC, the binder proportions investigated here showed much higher strength. Using 30% of the waste clay brick as a partial replacement binder in geopolymer concrete presents a promising avenue for sustainable construction practices.