Analysis of Asphalt Concrete Wearing Course made with Asphalt Polyurethane Modifier

Abstract

Modified asphalt is one of several solutions to road damage problems. The purpose of this study was to analyze the effect of adding polyurethane to the asphalt concrete wearing course (ACWC). The analysis method used is the Marshall Parameter analysis. Marshall specimens were prepared with modified polyurethane asphalt. The polyurethane content used is 1% to 4% by weight of asphalt with a range of 1%. The results showed that modified asphalt-polyurethane can improve ACWC performance in terms of stability, flow, VIM, VMA, VFA, and MQ. The best performing polyurethane content in this study was 2%, and usage of polyurethane levels above 3% is not recommended due to having MQ which does not meet the specification requirements.