The Department of Roads and Transportation Engineering at the College of Engineering at Al-Qadisiyah University discussed the master’s thesis tagged (Long-term evaluation of an asphalt road containing additives) by the student Russell Fouad Shaker and supervised by Prof. Dr. Jalal Taqi Shaker
The aim of this research is to evaluate the effectiveness of using SBS polymer on the properties of asphalt mixture
The research included the adoption of the Road Condition Index (PCI) method, and the road properties were evaluated based on laboratory tests represented by the indirect tensile strength test (ITS), the tensile ratio test to evaluate the moisture resistance (TSR), and the wheel track test to evaluate the rutting (WTT) for samples extracted from the selected sites in addition to In addition, the volumetric properties and aggregate gradation were evaluated, and the results of a road without additives within the same highway were compared
All polymer-improved asphalt samples showed higher values of tensile strength when compared to pure asphalt. When comparing the effect of different percentages of SBS, both 4.5% in Samawah and 6% in Diwaniyah showed higher improvement results. The results of the WTT laboratory test showed that the presence of the polymer significantly reduced the rutting depth. The results of the TSR laboratory examination of samples with SBS also showed results higher than 80%, which indicates a good improvement in the development of moisture resistance. Sieve analysis was used to ensure that there was no significant difference in the gradation of the layers used in the study. It was noted that the results of the bulk density of the polymer modified asphalt increased slightly. While the results of air voids decreased