高模量沥青混合料抗永久变形能力分析

In this paper, the effect of SBS polymer modified asphalt and high modulus additive to the resistance of pavement deformation of asphalt mixture were studied. Test results showed that both SBS polymer modified asphalt and PR-M high modulus additive improve the creep properties and high temperature stability of asphalt mixtures significantly. PR-M high modulus additive has significant impact on dynamic modulus of asphalt mixtures at high temperature, while SBS polymer modified asphalt has little effect to the improvement of dynamic modulus of asphalt mixtures. Furthermore, compared to SBS polymer modified asphalt, PR-M high modulus additive improves the resistance to permanent deformation of asphalt mixture significantly.