Utilization of LDPE Plastic Waste for Brick

Brick is an essential building material for quickening growth, especially in Kabupaten Ketapang, the largest district in the province of West Kalimantan at 31,580 km2. Plastic waste has a lifespan of between 500 billion and 1 trillion years. In order to support the acceleration of development in Kabupaten Ketapang, and due to the fact that plastic waste is classified as an element that is difficult to decompose and maintain the beauty of the environment, and in an effort to reduce the use of depleting natural resource materials, the innovation of using Low Density Polyethylene (LDPE) plastic waste as a mixed material for making bricks must be evaluated to determine its effectiveness. In the field, variations of 1:3 and 1:6 were used to evaluate the plastic mixture on brickwork based on SNI and PUBI. The properties of SNI-3-0349-1989 were applied in the brick mix's mix design analysis. A lighter weight was achieved by comparing the volume weight of the bricks to this plastic mixture. In accordance with SNI 16-2094-2000, the maximum compressive strength test for plastic bricks is 50.71 kgf/cm2 at a mixture variation of 1:3. This measurement of compressive strength is 45 kgf/cm2 , which is class I. With the addition of plastic to the brick mixture, the compressive strength decreased from 24.31 kgf/cm2 for a 10% mixture in class III to 22.85 kgf/cm2 for a 20% mixture in class III to 12.66 kgf/cm2 for a 40% mixture in class IV and the highest plastic brick specimen's compressive strength, which is 21.89 kgf/cm2 at a 1:6 variation of 0 percent, falls into the third class, which is 30 kgf/ cm2 . With the addition of plastic to the brick mixture, the compressive strength decreased from 20.04 kgf/cm2 for a 10% mixture in class III to 11.69 kgf/cm2 for a 20% mixture in class IV to 9.20 kgf/cm2 for a 40% mixture in class IV.