The effect of wax-based surfactant on the physical properties of cup lump rubber modified asphalt binder

At high temperatures, asphalt pavement structures are more prone to permanent deformation. The purpose of this study is to determine the influence of wax-based surfactant (WS) on the behaviour of asphalt binders modified with cup lump rubber (CLR). This study aims to determine the effect of WS on the high temperature properties of CLR modified asphalt binder. Based on the weight of the CLR modified asphalt binders, four different percentages of WS were used in this study: 0.1 %, 0.15 %, 0.2 %, and 0.25 %. The penetration value, softening point, elasticity recovery, torsional recovery and ductility of CLR modified asphalt binders with and without WS were analysed. The results indicate that the addition of CLR with WS improved the asphalt binder rutting and heavy loading properties at high temperatures.