The Influence of Heating Temperature on Aggregates Made from Expanded Polystyrene on the Mechanical Behaviors of Lightweight Concrete

The use of lightweight materials is currently increasing because it is able to reduce the weight of structures and, of course, will provide a smaller seismic load.Efforts to minimize the burden of lightweight materials can be achieved by substituting conventional aggregates with lighter alternatives, such as EPS.The utilization of EPS not only helps in reducing structural loads but also serves as a solution to address plastic waste pollution.This study aims to improve the quality of lightweight concrete using pumice sand and aggregates from EPS waste.The concrete quality was improved by improving the aggregate performance of EPS waste by heating.Heating of EPs waste aggregates was carried out at temperature variations of 100℃, 110℃, 120℃, 130℃, 140℃.The composition of the cement-soil mixture was made in volume ratios of: 1 part cement, 2 parts pumice sand and 3 parts modified EPS aggregate with a water cement ratio of 0.45.The quality tests carried out include compressive strength test, tensile strength test and collapse modulus test.The results of this study indicate that the increase in EPS density due to the applied heating has an impact on the improvement of the mechanical parameter values of lightweight concrete.