Penggunaan Limbah Plastik Polypropylene (PP) Sebagai Substitusi Agregat Halus pada Dinding Sumur Resapan

Abstract

Floods have become a frequent issue in Indonesia. They are caused by various factors, one of which is plastic waste. To address this flood problem, one effective solution is the construction of infiltration wells. Typically, the walls of these wells are made using the cast-in-place method, using brick or concrete on-site. However, this method can be time-consuming, depending on the labor force available. Innovations have emerged to create lightweight concrete infiltration well walls by incorporating polypropylene (PP) plastic as a substitute for fine aggregates. The goal is to reduce construction time and minimize plastic waste in the environment. In an experimental study conducted in the laboratory, different proportions of PP plastic (10%, 20%, 30%, 40%, and 50%) were added to determine the optimal composition for constructing the well walls. The resulting infiltration well, consisting of four segments with a height of 25 cm each, a diameter of 80 cm, and a thickness of 10 cm, showed that the optimal addition of PP plastic was at the 30% level, resulting in a well wall weighing 217.58 kg