Effective Utilization of Sugarcane Bagasse Ash and Marble Waste in Construction Products

The increasing scarcity of natural construction resources and the accumulation of industrial waste have encouraged the use of alternative materials in concrete. Several experimental studies have examined the physical and chemical behavior of waste materials when used as partial replacements, leading to improved strength characteristics. Recycled concrete aggregate (RCA), obtained from crushed concrete debris, closely resembles natural aggregate properties. Sugarcane bagasse ash (SBA), a finely divided by-product of burnt sugarcane bagasse, is suitable for partial cement replacement. Marble waste powder (MWP), generated during marble cutting and polishing, can be effectively used as a fine aggregate substitute. In this study, concrete mixes were prepared by partially replacing cement with SBA, fine aggregate with MWP, and coarse aggregate with RCA at different proportions. Strength and non-destructive tests were performed to assess performance. The results indicate that compressive and flexural strengths increase initially and reach maximum values at 20% SBA, 20% MWP, and 25% RCA, after which strength decreases. The highest split tensile strength was observed for the mix containing 20% SBA, 40% MWP, and 25% RCA, while all other mixes showed satisfactory behavior.