Asphalt has been used for many years and its importance as a valued engineering materials continues to increase. The interest in the modification of asphalt using polymers, whether virgin, scrap or polymer blends, is intense. The last tow decades, in particular, have seen an increase in the number of academic groups studying polymer-modified asphalt and correspondingly the peer-reviewed literature in the field has increase. Initially, studies on polymer modified asphalt (PMA) focused more on engineering and empirical measurements, e.g. ageing and softening point. However, in recent years a plethora of techniques have been employed in the study of the effect of the addition of polymers on asphalt properties.

Polymer modified asphalt (PMA) is on of the specially designed and engineered asphalt that are used in making pavement, roads for heavy duty traffic solutions to withstand extreme weather conditions. PMA is a normal asphalt with the added polymer, which gives it extra strength, high cohesiveness and to fatigue, stripping and deformations, making it a favorable material for infrastructure.