Effect of Polymer Materials (StyreneButadiene-Styrene) on Marshall Asphalt Mix Criteria

Abstract

this research aims to identify the impact of using polymer materials on physical properties of traditional bitumen used in asphaltic mix based on Marshall Mix design proceedings. During this research, traditional bitumen is modified by Styrene- Butadiene-Styrene (SBS). Percentages of 1,3,5,7, and 9% of SBS by weight of bitumen were mixed. Physical tests such as Penetration Test, Viscosity Test, Softening Point Test, and Flash Point Test were carried out to evaluate the enhancement in the modified bitumen properties. After that, HMA is prepared with polymer modified bitumen to study the change in Marshall asphalt mix criteria. Results show that, using SBS as a modifier agent has a positive impact on the physical properties of traditional bitumen. According to these results, it can be said that the use of SBS polymers showed a significant and noticeable improvement in the performance of the asphalt mixture. Also, modified asphalt mix at any percentage of modifier agent recorded high improvement in stability than the conventional asphalt mix.