脱硫胶粉改性沥青混合料路用性能研究

Research on road performance of desulfurized rubber powder modified asphalt mixture

针对普通橡胶沥青施工和易性差、黏度大及储存稳定性差等不足,采用脱硫胶粉对沥青进行改性,并对脱硫胶粉改性沥青混合料的路用性能进行研究,同时与SBS改性沥青和普通橡胶沥青混合料进行对比。结果表明:三种试件的低温破坏应变和动稳定度均满足规范要求,其中脱硫胶粉改性沥青试件的低温抗裂性能显著提高,具有优良的路用性能。

In view of the poor work-ability,high viscosity and poor storage stability of ordinary rubber asphalt,the asphalt was modified with desulfurized rubber powder,and the road performance of the desulfurized rubber modified asphalt mixture was studied,and it was modified with SBS.Asphalt and ordinary rubber asphalt mixture were com pared,and the results showed that the low-temperature failure strain and dynamic stability of the three specimens met the requirements of the specification.Among them,the lowtemperature crack resistance of the desulfurized rubber powder-modified asphalt specimens was significantly improved,and it had excellent properties.