A Sustainable Shift: Replacing Conventional Aggregates WITH Mswi Bottom Ash IN Concrete

Abstract

The construction industry faces immense pressure to reduce its environmental footprint, particularly regarding resource depletion and waste generation. Municipal Solid Waste Incineration (MSWI) Bottom Ash (BA), a significant residue from waste-to-energy plants, presents a potential solution as a substitute for conventional natural aggregates (NA) in concrete. With increasing emphasis on sustainable construction materials, this study investigates the feasibility of using Municipal Solid Waste Incinerator (MSWI) bottom ash as a substitute for conventional coarse aggregates in concrete. The paper concludes that MSWI BA, when properly processed and incorporated, can contribute to sustainable concrete production, reducing reliance on virgin aggregates and diverting waste from landfills, aligning with circular economy principles. However, standardized regulations, robust quality control protocols, and further research into long-term durability and leaching under various conditions are crucial for wider adoption.. This research demonstrates that MSWI BA is a technically viable and environmentally beneficial alternative aggregate, paving the way for more sustainable concrete production and effective waste management strategies within a circular economy framework. This study checks MSWI bottom ash can safely and effectively replace sand or gravel in concrete. In this paper, how much replacement of natural coarse aggregate is done is also told with the result, and what benefit will be there to the environment. Also, how fine aggregate and coarse aggregate are replaced is explained.