Pemanfaatan Limbah Plastik Jenis HDPE (High Density Polyethelene) serta Limbah Tulang Ayam di Kota Semarang sebagai substitusi Parsial Campuran pada Bata Hebel

Abstract

Human activities that increase every year naturally generate a large amount of plastic waste, primarily consisting of HDPE (High Density Polyethylene) plastic waste. Additionally, chicken bone waste, which is rarely utilized and often left to accumulate, is also produced. Utilizing HDPE plastic waste and chicken bone waste as partial substitutes in the mixture for CLC bricks is one solution to reduce waste and greenhouse gas (CO2) emissions during the cement production process. The aim of this research is to utilize and determine the optimal percentage variation of the mixture of ash from the combustion of chicken bone waste, which contains more than 50% CaO, as a partial cement substitute, and HDPE plastic waste, which is hard, solid, lightweight, and resistant to high temperatures, as a partial fine aggregate substitute in the production of CLC bricks that meet Indonesian National Standard (SNI) specifications, with a total of 15 samples. The method used in this research is an experimental method using cube test specimens measuring 15 x 15 x 15 cm with variations in the percentage of chicken bone ash waste (0%, 2.5%, 5%, 7.5%, 10%) and HDPE plastic waste (0%, 0.4%, 0.8%, 1%, 1.2%) from cement and fine aggregate, referring to SNI 8640-2018. The expected outcome of this research is CLC bricks with the specific gravity, absorption, and average compressive strength of class IB CLC bricks.