中文摘要：

鉴于目前的沥青黏弹性能评价指标对改性沥青的适用性较差，采用动态力学分析方法对基质沥青和改性沥青进行研究，测定了不同温度和频率下沥青的黏弹性能参数，通过Han曲线和动态黏弹参数的变化规律分析其黏弹性能．结果表明：改性沥青的Han曲线在不同温度下具有不同的温度依赖性，由于其相态结构比较复杂，导致其黏弹性能不同于基质沥青；采用动态力学方法能很好地揭示改性沥青的宏观力学性能与微观结构的相关性．

英文摘要：

As the existing evaluation index of viscoelastic properties of asphalt is inapplicable to modified asphalt, the viscoelastic properties of both base asphah and modified asphalt are analyzed by using the dynamic mechanical method. In the investigation, the parameters describing the viscoelastic properties at different temperatures and fre- quencies are measured, and the variation laws of both Han curves and dynamic viscoelastic parameters are analyzed. The results indicate that the temperature dependence of Han curves of modified asphalt varies at different temperatures, that there exists a great difference in viscoelasitc properties between base asphalt and modified as- phalt due to the complex morphological structure of modified asphalt, and that the dynamic mechanical analysis is effective in revealing the relativity between the macroscopic mechanical properties and the microstructure of modified asphalt.