Effect of Variable Density Plastic Granules and Marble Powder on the Performance of Blended Concrete

Abstract

The reuse of plastic is crucial in addressing environmental concerns. Incorporating waste plastics into concrete by converting them into aggregates presents a viable solution for their disposal. This study examines the mechanical behavior of concrete incorporating waste Low-Density Polyethylene (LDPE) granules as a partial replacement for coarse aggregates. It also explores the combined utilization of recycled plastic and marble powder as partial substitutes for coarse aggregates and cement, respectively. LDPE waste was collected and blended with Ordinary Portland Cement (OPC) at varying proportions (0%, 20%, 30%, and 40%) to replace coarse aggregates. Additionally, marble powder was used to replace cement in proportions of 5%, 10%, and 15% for each variation of plastic granules. The workability, compressive strength, and split tensile strength of the prepared concrete mixes were evaluated.