ABSTRACT

ABSTRACT: Creep properties of bituminous mixture are very important to predict rutting depth in flexible pavement structures due to traffic loading. Rutting has been recognized as a problem in flexible pavements, and with the advent of high tire pressure and heavier wheel loads, permanent deformation potential in hot mix asphalt (HMA) layers has increased. Because of distresses due to permanent deformations, a good deal of budget is annually being expensed for repair and rehabilitation of asphaltic pavements. In this research, the effect of crumb rubber on creep performance of modified asphalt mixtures is studied. The results indicate that the performance of rubberized asphalt has good accuracy in comparison with conventional HMA.