A Study on Properties of Recycled Coarse Aggregate and It's Concrete

Abstract

This paper presents recycled coarse aggregate and its concrete properties. Recycled coarse aggregate exhibits lower values for loose and dry-rodded unit weight and high water absorption values than the natural coarse aggregate. Natural aggregate concrete exhibits higher mechanical strength than recycled coarse aggregate concrete. Results pronounced that the percentage increment of recycled aggregate content is inversely proportional to the strength and concluded that optimum dose of recycled aggregate is 50% and proposed a model to estimate compressive, split tensile and flexural strengths of recycled coarse aggregate concrete. The maximum replacement of RCA in concrete is 50%, and the proposed models show excellent compatibility with experimental results.