699 Available Online at www.ijscia.com | Volume 3 | Issue 5 | Sep-Oct 2022 Utilization of LDPE Plastic Waste for Mixed AC-WC Asphalt E. Sutandar, F. Juniardy, A. Supriyadi, G. Setyabudi H. Azwansyah and Aryanto Faculty of Civil Engineering, University of Tanjungpura Prof. Dr. Hadari Nawawi Pontianak street, West Kalimantan, Indonesia *Corresponding author details: Erwin Sutandar; Erwin_sutandar@yahoo.com ABSTRACT Road infrastructure development in Kabupaten Ketapang necessitates asphalt as a building material to support the acceleration of growth. Innovations are required to reduce the consumption of materials derived from nature to conserve diminishing natural resources. Plastic is an element that requires between 500 billion and one trillion years to decompose. With the addition of plastic to asphalt, the permanent deformation value of the mixture decreased and its dynamic stability increased, as determined by the wheel track test. Marshall tests on asphalt mixtures containing plastic revealed that the addition of up to 3% plastic increased the HRA mixture's stability, bulk density, compacted aggregate density (CAD), and Marshall Quotient. This study evaluated the Marshall value of the modified AC-WC asphalt layer by adding a mixture of Low-Density Polyethylene (LDPE) plastic waste with a variety of mixed properties. Each of the four variations of the AC- WC mixture (0%, 2%, 4%, and 6% LDPE) that met the specifications yielded stability values. LDPE at 6% has the highest stability value, while LDPE at 0% has the lowest stability value. Keywords: low density polyethylene (LDPE) plastic; AC-WC mixture; ketapang regency plastic waste; plastic waste asphalt INTRODUCTION Considering the significance and strategic function of roads to promote the distribution of goods and services as well as the mobility of the population, roads are the basic and primary infrastructure that drives the national and regional economy. The availability of roads is an absolute requirement for investment to enter a region. All communities have access to education, health, and employment services because of roads. Therefore, it is necessary to design a pavement structure that is robust, long-lasting, and resistant to plastic deformation. In addition to infrastructure development in Ketapang Regency, roads and land transportation infrastructure are indispensable for infrastructure accessibility development in Ketapang Regency. To reduce the use of materials derived from nature, such as sand, natural stone, and asphalt, the most recent innovations are required. This innovation intends to reduce the consumption of diminishing natural resources. The processing of waste for use as raw materials or as raw materials for the production of asphalt mixtures is one of the innovations found in the construction industry. Plastic is an element that cannot or takes a long time to decompose. It is estimated that between 500 billion and 1 trillion plastics are used annually in the world, where it is known that the amount of plastic is growing. It is estimated that each individual uses 170 plastic bags annually. Each year, more than 17 billion plastic bags are given away for free by supermarkets around the world. Plastic has numerous advantages, but also disadvantages, particularly plastic waste. However, plastic waste presents opportunities for use in road infrastructure construction. Asphalt mixtures have a number of disadvantages, including permanent deformation (change in shape) due to excessive pressure due to excessive truck loads, cracking due to heat, and damage due to moisture concluded in his thesis that the addition of plastic to asphalt will improve the asphalt's properties. Marshall tests on asphalt mixtures containing plastic revealed that the addition of up to 3 percent plastic increased the HRA mixture's stability, bulk density, compacted aggregate density, and Marshall Quotient. In proportion to the amount of plastic added to asphalt, the permanent deformation value of the mixture decreases in wheel track tests, resulting in an increase in dynamic stability. Referring to this, the author wishes to test the Marshall value of the modified AC – WC asphalt layer by incorporating a mixture of Low-Density Polyethylene (LDPE) plastic waste with a variety of mixed properties. METHODS 1. Implementation Method 1.1 Preparatory Stage This study utilized the following materials: (1) Ex. Buil Stone-produced coarse aggregate (2) Fine aggregate, derived from Ex. Buil Stone (3) TPS is an asphalt additive derived from plastic (LDPE). (4) The asphalt shell 60/70 comes from the Tanjungpura University Highway Laboratory. This study employs the following tools: (1) Marshall test apparatus comprised of a curved press head, a test ring with a capacity of 3,000 kg (6,000 lb) equipped with a plastic melt gauge, and a test ring with a capacity of 3,000 kg (6,000 lb) (flowmeter). International Journal of Scientific Advances ISSN: 2708-7972 Volume: 3 | Issue: 5 | Sep - Oct 2022 Available Online: www.ijscia.com DOI: 10.51542/ijscia.v3i5.3