排水沥青混合料动态模量试验研究  

Experimental Studyon Dynamic Modulus of Porous Asphalt Mixtures

作　　者：朱新春[1] 李明亮[2] 曹东伟[2] 尘福涛 徐瑞刚 

机构地区：[1]江苏宁杭高速公路有限公司,江苏南京211299 [2]交通运输部公路科学研究院,北京100088 [3]重庆交通大学,重庆400074

出　　处：《上海公路》2018年第2期89-91,共3页Shanghai Highways

摘　　要：动态模量指标能够真实有效的反应环境一车辆一路面系统下的真实特性,通过对PAC-5、PAC-10、PAC-13(细型)、PAC-13(中型)、PAC-13(粗型)5种不同结构参数的排水沥青混合料进行研究分析,比较了5种排水沥青混合料不同加载频率以及不同试验温度条件下的动态模量。结果表明动态模量受温度、加载频率、试验温度的影响,同时在同等试验条件下,不同结构类型的排水沥青混合具有不同的动态模量值。The dynamic modulus indicates properties of pavement under the interaction system of environment-vehicle-pavement. In this study, five different types of porous asphalt mixtures, including PAC-5, PAC-10, PAC-13(fine type), PAC-13(medium) and PAC-13(coarse type) were investigated. The dynamic modulus of the 5 type mixtures at different loading frequencies and temperatures were measured and compared. The results showed that the dynamic modulus is influenced by the maximum size of the aggregate and the gradation of the mixture. At the same test condition, porous asphalt with larger aggregate size and coarser gradation showed greater dynamic modulus values.

关 键 词：排水沥青混合料 结构参数 动态模量 加载频率 温度 

分 类 号：U414[交通运输工程—道路与铁道工程]