基于高温稳定性的沥青混合料时间-温度-荷载等效作用  

Equivalent Effect of Loading Time,Temperature and Loading Based on High Temperature Stability of Asphalt Mixture

作　　者：李江[1,2] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]交通运输部公路科学研究院,北京100088

出　　处：《公路交通科技》2014年第1期13-15,20,共4页Journal of Highway and Transportation Research and Development

基　　金：交通运输部西部交通建设科技项目(20113182231380)

摘　　要：由于沥青和沥青混合料为黏弹塑性体,而荷载又是影响沥青路面高温稳定性的关键因素,沥青路面出现车辙的概率极大提高。利用荷载轮轮速、温度、荷载均可变化的车辙仪,以动稳定度为技术研究指标,研究温度变化、荷载作用时间变化、荷载大小变化对沥青混合料高温稳定性的影响,进而研究三者之间的等效作用。试验结果表明:温度、荷载作用时间、荷载大小对沥青混合料高温稳定性均有显著影响,三者之间具有一定的等效作用,但在各因素比较宽的变化范围内并无明确的等效关系。Because asphalt and asphalt mixture are viscoelastic plastic bodies, while load is the key factor affecting the high temperature stability of asphalt pavement, rutting probability of asphalt pavement is greatly increased due to these factors. Taking dynamic stability as the research index, using the rutting test equipment that the wheel speed, temperature and load are variable, the high temperature stability of asphalt mixture varying with temperature, load level and loading time are studied, and the equivalent effect among the 3 factors are studied. The results show that （ 1 ） temperature, loading time, load level have significant effects on high temperature stability of asphalt mixture; （2） the 3 factors have equivalent effect to some extent, but there is no clear equivalent relation in the relatively wide range of the factors.

关 键 词：道路工程 等效作用 车辙试验 高温稳定性 荷载作用时间 

分 类 号：U416.217.03[交通运输工程—道路与铁道工程]