Comparison of Asphalt Concrete-Wearing Course (AC-WC) characteristics using 60/70 asphalt penetration and Elvaloy modified asphalt

Abstract

The performance of the asphalt mixture is affected by the asphalt characteristics and the gradation of the aggregate. Polymer-modified asphalt has been widely used to overcome road pavement damage such as cracking, spalling, yielding, and damage due to deformation due to grooves, curling, or rutting. Polymer-modified asphalt has been widely used, both from plastomers and elastomeric types. Elvaloy modification asphalt resulted from the conventional asphalt mixing process of 60/70 with Elvaloy additives from Dupont that are elastomer using RET (Reactive Elastomer Terpolymer) technology. This study aimed to compare the characteristics of the AC-WC mixture using 60/70 penetration asphalt and Elvaloy modified asphalt. The study began by making a paved mixture using 60/70 penetration asphalt with the middle-graded aggregate. The Elvaloy modified asphalt has three aggregate gradations: lower limit, middle, and upper limit gradation. Test objects were made as many as 156 test objects to obtain Optimum Asphalt Content (OAC) values, then using OAC values, made 36 test objects for the Marshall test; 4 test objects for Wheel Tracking Machine (WTM) testing. The Marshall and WTM tests determine the performance of 60/70 penetration asphalt and Elvaloy modified asphalt on the AC-WC mixture. The research results of the properties test showed that Elvaloy modified asphalt has a better penetration value, softening point and ductility than 60/70 penetration asphalt. Marshall’s test results provided the highest Stability and flow value in the Elvaloy modified asphalt mixture. From the results of the WTM test, only the middle grade of Elvaloy modified asphalt meets the specification.