Comparative Study on Comprehensive Performance of Three SMA Asphalt Mixtures
Two technical schemes were put forward,namely,using warm mixing agent to reduce pro-duction temperature and controlling leakage and oil locking of high-viscosity asphalt,to study the technical feasibility of removing fibers.Aiming at the function of fiber toughening and viscosity in-creasing,the comprehensive properties of SMA-13,WSMA-13 and WRSMA-13 asphalt mixtures were studied by designing test schemes.The results show that both WSMA-13 and WRSMA-13 are feasible to remove fibers.The cost of WSMA-13 is slightly lower than that of SMA-13.When the fiber source is not fixed and there is capacity requirement,WSMA-13 scheme can be adopted.WRSMA-13 has great economic advantages and obvious comprehensive performance advantages,so it is recommended to use it under the condition of producing or purchasing stable rubber powder composite modified as-phalt.
万方数据
维普
