Pengaruh pemanfaatan limbah plastik low density polyethylene sebagai substitutor sebagian agregat paving block terhadap kualitas paving block

Abstract

Innovations in efficient and environmentally friendly infrastructure development continue to be developed, including modifications to the manufacture of paving blocks by utilizing low-density polyethylene (LDPE) plastic waste. Paving blocks or concrete bricks are concrete materials that can be used for pavement of roads, parking areas, sidewalks, or parks. This research aims to create environmentally friendly paving blocks and improve their quality by utilizing LDPE plastic seeds as a fine aggregate substitute. The composition of the paving block mixture is 1 cement: 5 sand: 4 gravel, with variations in sand substitution by plastic seeds of 0%, 5%, 10%, 15%, 20%, and 25%. Tests performed after 28 days include compressive strength, wear resistance, and water absorption tests based on SNI-03-0691-1996. The test results showed that the normal paving block had a compressive strength of 21.060 MPa, a wear resistance of 0.136 mm/min, and a water absorption of 5.493%. The 5% substitution variation is the optimum variation value by producing the best compressive strength, which is 22.934 MPa, wear resistance of 0.121 mm/min, and water absorption of 5.138%, so it is in the B quality category for parking lots. The 10% to 25% variation has a compressive strength of 15,971 MPa, 10,756 MPa, 7,202 MPa, and 4,670 MPa, respectively. The 10% variation is in the C quality category for pedestrians, while the 15%, 20%, and 25% variations are in D quality for parks.