Demolished Waste and GGBS-Based Cement Concrete: A Review

Abstract

The construction industry in India and other developing nations generates a significant volume of dismantled waste each year, primarily in the form of demolished concrete. Proper management and disposal of this waste have emerged as pressing global challenges due to environmental concerns and the scarcity of natural resources. Recycling these materials not only has the potential to reduce construction costs but also offers a sustainable solution to alleviate the socio-economic challenges faced by low-income communities. The incorporation of Recycled Concrete Aggregates (RCA) in new concrete mixes is a promising approach that can significantly contribute to sustainable construction practices. Extensive experimental research has been conducted worldwide, exploring the processing of demolished concrete for its effective use in mixed designs. This paper provides a comprehensive review of studies that investigate the effects of partially replacing natural coarse aggregates with RCA, as well as the incorporation of Ground Granulated Blast Furnace Slag (GGBS) and various admixtures. The focus is on evaluating the impact of these replacements on the workability, compressive strength, and overall performance of recycled concrete. This review aims to highlight the potential of these materials in promoting sustainable construction practices and to pave the way for advanced research in this domain.