Utilization of Cast Plastic Waste for Paving Block with Sand Mixture

Abstract

Paving blocks are widely used in making parking lots, footpaths, and parks because they are easy to install, durable, and can be arranged in certain interesting patterns. This research needs to be carried out to examine how much influence the addition of sand to cast plastic waste has on the compressive strength and specific gravity of paving blocks. The waste used is leftover household consumption such as plastic bag wrapping in solid form and then burned to melt. The liquid is then mixed with sand to increase the hardness and plasticity and then poured into paving molds. The process of making the specimen is done manually with variations of the sand used by 0%, 7.5%, 15%, 22.5% and 30%. Each variation of the sample was made in the amount of 5 pieces. The results of the analysis show that the addition of sand to the plastic liquid can significantly increase the compressive strength of paving blocks. The highest value increase was obtained in the 22.5% mixture variation, which reached 11.27 MPa. Based on SNI 03-0691-1996, these paving blocks are classified in the D-quality and can be used for parks, or other uses.