高温-重载作用下沥青混合料的高温稳定性研究  

Research on High Temperature Stability of Asphalt Mixtureunder High Temperature and Heavy Load

作　　者：翟晓炜[1] ZHAI Xiaowei(Capital Engineering&Research Incorporation Ltd.,Beijing 100176,China)

机构地区：[1]中冶京诚工程技术有限公司,北京100176

出　　处：《工程技术研究》2023年第16期94-97,共4页Engineering and Technological Research

摘　　要：沥青混合料高温稳定性差会导致道路在运营不久后出现车辙等病害,严重威胁道路的使用。为了探究高温和重载作用下沥青混合料高温稳定性的演变规律,文章选用70#沥青、SBS沥青和0.2%抗车辙剂改性沥青分析了沥青混合料的抗剪强度和抗车辙性能。结果表明:温度越高,沥青混合料的抗剪强度和抗车辙性能越差;轴载越大,沥青混合料的抗车辙性能越差;三种沥青混合料中,0.2%抗车辙剂改性沥青的高温稳定性最好,70#沥青的高温稳定性最差,对高温和重载更敏感。The poor high temperature stability of asphalt mixture will lead to rutting and other diseases on the road soon after operation,which seriously threatens the use of the road.In order to explore the evolution law of high temperature stability of asphalt mixture under high temperature and heavy load,70#asphalt,SBS asphalt and modified asphalt with 0.2%anti-rutting agent are selected to analyze the shear strength and rutting resistance performance of the asphalt mixture.The results show that the higher the temperature,the worse the shear strength and rutting resistance performance of the asphalt mixture;the larger the axle load,the worse the rutting resistance performance of the asphalt mixture;among three kinds of asphalt mixtures,the high temperature stability of modified asphalt with 0.2%anti-rutting agent is the best,and the high temperature stability of 70#asphalt is the worst,which is more sensitive to high temperature and heavy load.

关 键 词：沥青路面 高温稳定性 抗剪强度 抗车辙性能 

分 类 号：U414[交通运输工程—道路与铁道工程]