RECYCLING CONSTRUCTION WASTE TO IMPROVE SOIL MECHANICS: A REVIEW

Abstract

This study investigates the utilisation of different types of building waste, specifically recycled concrete debris (RCA), recycled brick debris (RBA), recycled glass sand (RGS), sawdust, and marble waste, for the purpose of enhancing and stabilising soil. The preliminary findings are: Integrating construction waste materials like RCA, RBA, and recycled glass can enhance the mechanical properties of the soil, including its strength, resilience, and resistance to deformation. Empirical studies have demonstrated that including these recycled materials in optimal ratios can greatly improve the California soil and cement mix's capacity to withstand load (CBR). By integrating the improvement of geographic cells with sub-base RCA, soil tolerance may be further heightened and soil deposition can be minimised. The chemical and microscopic properties of recycled materials, as well as their interaction and the properties of the ITTZ, have a substantial influence on the strength and effectiveness of soil waste combinations. Utilising construction and demolition residues (C&D) for soil stabilisation and enhancement is a viable approach to encourage sustainable building practices and waste management. In general, the study highlights the benefits of utilising recycled building leftovers to improve soil properties and encourage sustainable construction methods.