EVALUATING THE COMPRESSIVE STRENGTH AND WORKABILITY PERFORMANCE OF CONCRETE: USING DEMOLISHED CONCRETE WASTE AS FINE AGGREGATE REPLACEMENT

Abstract

With an increasing focus on sustainable construction practices, the need for innovative approaches towards material efficiency is sharper than ever. This study evaluates the utilization of recycled fine aggregates (RFA) as a viable substitute for natural aggregates in concrete production. In this context, the effect of RFA replacement levels (0%, 50%, and 100%) on compressive strength and workability has been analyzed through experimental evaluations. While the compressive strengths of RFA-containing concretes were lower than that of conventional mixes, the 50% RFA-based concrete exhibited the best strength properties. These findings substantiate the feasibility of incorporating RFA into non-structural and semi-structural applications, thereby offering significant environmental and economic benefits.