Study on the Effect of Polyolefin Warm Mix Agent on the Performance of Ldhs Modified Asphalt
Polyolefin/LDHs modified asphalt with different content was prepared by using polyolefin warm mixing agent as warm mixing agent and LDHS as anti-ultraviolet aging additive.Three indexes of polyolefin/LDHs modified asphalt were tested to evaluate the physical properties of polyolefin/LDHs modified asphalt.The viscosity test of polyolefin/LDHs modified asphalt was carried out to e-valuate the viscosity reduction effect of polyolefin warm mix agent on LDHs modified asphalt.The rheological properties of polyolefin/LDHs modified asphalt before and after aging were tested by dy-namic shear rheometer to evaluate the influence of polyolefin warm mix agent on the ultraviolet aging resistance of LDHs.The results show that the polyolefin warm mix agent can improve the high tem-perature performance and deformation resistance of LDHs modified asphalt,and can greatly reduce the viscosity of LDHs modified asphalt.However,the polyolefin warm mix agent will reduce the low temperature performance of LDHs modified asphalt.Polyolefin warm-mix agent will not affect the ul-traviolet aging resistance of LDHs modified asphalt,and the optimum content of polyolefin warm-mix agent is 2％of asphalt quality.
万方数据
维普
