Effects of Gondorukem addition on AC-WC pavement containing reclaimed asphalt pavement

Abstract

Abstract Increasing the level of the road due to overlay, by adding additional layers continuously, will thicken the pavement layer and utilize the virgin materials. The dredged asphalt pavement materials can be reused, for example for new pavements, commonly called Reclaimed Asphalt Pavement (RAP). However, adding RAP on the new pavement result in a decrease in the physical properties of the pavement. Gondorukem is a sap that was chosen as an asphalt concrete additive ingredient that can absorb heat. The use of Gondorukem as additive was expected to increase the stability of the asphalt pavement. In this study, the Marshall characteristics of the mixture of asphalt concrete - wearing course (AC-WC) containing RAP and Gondorukem additives were tested. Asphalt concrete containing 35% of RAP and Gondorukem which content varied of 0%, 3%, 5%, 7%, and 10% was tested. The obtained stability value increased by 28.48%. The optimum Gondorukem addition into the asphalt was 3.2%; the optimum bitumen content was 6.45%.