高模量沥青混合料动态模量及其主曲线研究  

Research on Dynamic Modulus and Master Curve of High Modulus Asphalt Mixture

作　　者：王昊鹏[1] 杨军[1] 施晓强 周文章[1] 

机构地区：[1]东南大学交通学院,江苏南京210096

出　　处：《公路交通科技》2015年第8期12-17,共6页Journal of Highway and Transportation Research and Development

基　　金：教育部高等学校博士学科点专项科研基金项目(20120092110053)

摘　　要：为了指导高模量沥青混凝土的设计和应用,采用简单性能试验机（SPT）测试了两种不同掺加剂（ZQ-2和ECB）的高模量改性沥青混合料的动态模量,根据时间-温度置换原理,利用非线性最小二乘法拟合得到了参考温度下的动态模量主曲线,并应用其预测了两种高模量沥青混合料的高低温性能,最后与抗压回弹模量进行对比分析。结果表明：高模量沥青混合料的动态模量依赖温度和频率的变化;ZQ-2高模量沥青混合料的高温抗车辙性能和低温抗变形能力均优于ECB高模量沥青混合料;抗压回弹模量对应于频率较低时（0.01-0.1 Hz）的动态模量,采用动态模量进行沥青路面设计更合理科学。In order to guide the design and application of high modulus asphalt concrete, the dynamic moduli of 2 types of high modulus asphalt mixture modified with ZQ -2 and ECB respectively are tested by simple performance tester （SPT）. According to the time-temperature displacement principle, the dynamic modulus master curves of high modulus asphalt mixture at reference temperature are obtained through non-linear least squares regression analysis, and the master curves are used to predict the high and low temperature performance of the 2 kinds of asphalt mixture. Contrastive analysis on their compressive resilient moduli are conducted at last. The result shows that （ 1 ） the dynamic modulus of high modulus asphalt mixture is dependent on the change of temperature and frequency; （2） the high temperature rutting resistance and low temperature non-deformability of high modulus asphalt mixture modified by ZQ -2 are both superior to those of ECB; （3） the compressive resilient modulus corresponds to the dynamic modulus at low frequency （0. 01 0. 1 Hz）, it is more reasonable and scientific to apply dynamic modulus for design of asphalt pavement.

关 键 词：道路工程 高模量沥青混合料 最小二乘法 动态模量 时温置换原理 抗压回弹模量 

分 类 号：U414[交通运输工程—道路与铁道工程]