应力吸收层沥青结合料特性研究  

Study of asphalt binder characters of stress absorbing membrane interlayer

作　　者：张苛[1] 罗要飞[1] 李志宏[1] 张争奇[1] 

机构地区：[1]长安大学公路学院,陕西西安710064

出　　处：《合肥工业大学学报（自然科学版）》2013年第6期713-717,共5页Journal of Hefei University of Technology：Natural Science

基　　金：西部交通建设科技资助项目(2006-318-812-21)

摘　　要：为了分析沥青结合料对应力吸收层性能的影响,保证应力吸收层发挥良好的功能,文章以SK90#基质沥青、SBS改性沥青和橡胶沥青为研究对象,对其进行常规试验和SHRP试验,分析了3种沥青的高低温性能、弹性恢复性能和抗疲劳性能。研究表明,胶粉掺量为19%,高速搅拌时间为1h的橡胶沥青具有较强的高低温性能和抗老化性能,能很好满足应力吸收层的功能要求,是作为应力吸收层结合料的较佳选择。In order to analyze the influence of asphalt binder on the performance of stress absorbing membrane interlayer（SAMI）, and to ensure the excellent function of SAMI, the SK90~ base asphalt, SBS modified asphalt and asphalt rubber were selected to carry out the routine test and SHRP test. High and low temperature performance, elastic recovery performance, and fatigue resistance of the three kinds of asphalt were analyzed. The results show that when the rubber content is 19% and the high speed mixing time is 1 h, the asphalt rubber has good high and low temperature performance and aging resistance, well meeting the functional requirements of SAMI. It is a suitable choice to select asphalt rubber as SAMI binder.

关 键 词：应力吸收层 橡胶沥青 常规试验 SHRP试验 

分 类 号：U416.2[交通运输工程—道路与铁道工程]