The effect of High-Density Polyethylene (HDPE) and Low-Density Polyethylene (LDPE) on characteristics of asphalt concrete with dry and wet mixing process

Abstract

Plastic waste in Indonesia reaches 64 million tons per year which 3.2 million tons are disposed to the sea. Therefore, a solution is needed to solve plastic waste problem in Indonesia. The objectives of the study is to know the effect of using High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE) waste on characteristics of asphalt concrete AC - WC based on the Marshall Test, compare the characteristics produced based on dry and wet mixing process, and evaluate whether the test results fulfil Bina Marga Specification 2018. By the result of wet process, stability value of 7% HDPE increased up to 38.08% and 8% LDPE content increased up to 22.03% and for the dry process, 9% HDPE and 11% LDPE increase the stability value up to 24.61% and 19.30% respectively. The use of HDPE or LDPE can increase stability of asphalt concrete mixing both in dry and wet process. We can use up to 8.7 ton of plastic waste into 1 km of 7-meter-wide asphalt pavement road.