沥青混合料动态模量试验研究

Research on Dynamic Modulus of Asphalt Mixtures

关键词:  沥青混合料  动态模量  通用曲线  预估模型

Key words:  asphalt mixture,dynamic modulus,master curve,predictive model

摘要:

分析了沥青混合料动态模量和相位角对温度和加载频率的依赖性,利用时间-温度置换原理建立了动态模量的通用曲线,并用动态模量实测结果对Witczak预估模型进行了验证和分析,为将动态模量作为沥青路面设计参数和混合料性能评价指标提供了有益参考.

Abstract:

The time and temperature dependence of dynamic modulus and phase angle of hot mix asphalt is analyzed,the master curve of dynamic modulus and phase angle is built using time-temperature superposition principle,the Witczak predictive equation is verified using the test results,which is helpful to provide good reference for China to use dynamic modulus as pavement design parameters.