Assist lec. Fatin Hashim + Assist lec. Alaa Hussein<br />Abstract <br />Rutting was characterized as a longitudinal surface depression that develops in a roadway's wheel pathways <br />due to continuous traffic loads. Throughout the pavement's operational life, it builds up gradually with little <br />permanent deformations with every load application. Rutting of hot mix asphalt (HMA) pavements at or <br />around intersections are fairly prevalent in hot and cold climes. Given that HMA loses rigidity as pavement <br />temps rise, the issue is undoubtedly worse in warm areas than in cold ones. Therefore, this project examines <br />the impact of adding crumbed rubber to the hot asphalt mixture. However, the optimum amount of the binder <br />used in the reference mixture without crumb rubber (CR) and the mixture that has (5, 10, 15, and 20) % of <br />crumbed rubber was identified by utilizing. The indirect tensile tests were performed on samples to identify <br />the influence of adding crumbed rubber on the features of the asphalt mixes. The optimum asphalt content <br />achieved conditions is 4.5%. The results indicated that CR increases stability and stiffness while adding <br />crumbed rubber into asphalt negatively influences bulk density.<br />