The Enhancement of Compressive Strength of Cement-Based Composite Filled with LDPE/PET/Styrofoam Aggregates as Candidate for Breakwater Application

Abstract

The composite of cement base matrix filled with LDPE/PET/Styrofoam plastic waste as aggregates has been successfully synthesized through a conventional mixing process. The highest density and lowest water absorbability of the composite are 2.06 g/cm3 and 6.02% respectively. SEM results show the distribution of sand aggregates were distributed evenly within the matrix. The PET has shown the tendency to form a spherical morphology. It is probably caused by the high adhesiveness of PET that induces the surface tension between PET and LDPE. The highest compressive strength value of the composite is 18.8 MPa.