Mechanical Properties of Concrete Containing Granite Sand and Recycled Plastic Aggregates

Abstract

This study aims to investigate the mechanical properties of concrete containing granite sand and recycled plastic aggregate (polyethylene terephthalate). The natural sand was replaced with granite sand, and coarse aggregate was partially substituted with plastic aggregate in volumes of 10%, 30%, and 50%. The experimental program consisted of slump, setting time, compressive strength, porosity, and absorption. The results showed that concrete containing granite sand had lower slump but had compressive strength similar to that of concrete produced from natural sand. The slump decreased with an increasing amount of plastic aggregate. The compressive strength of concrete with no more than 30% of plastic aggregate was similar to that of concrete without plastic aggregate. However, the compressive strength was reduced by 28% when using 50% of plastic aggregate, while setting time of concrete was not significantly different.