盐冻循环对沥青性能的影响  

The Effect of Salt Freezing Circulation to the Performance of Asphalt

作　　者：李震[1] 崔亚楠[1] 韩吉伟 王乐[1] 刘振正 

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051 [2]内蒙古交通建设质量监督局,内蒙古呼和浩特010051

出　　处：《公路工程》2015年第5期120-123,共4页Highway Engineering

基　　金：国家自然科学基金项目(11162010)

摘　　要：在严寒地区,盐冻循环对沥青路面的结构稳定性能会产生很大影响。通过室内冻融循环试验,对基质沥青、SBS(styrene-butadiene-styrene block copolymer)改性沥青在盐冻循环前后的3大指标进行了测试,同时对沥青与粗集料的粘附性试验进行了改进,分析了盐冻循环前后粘附性的变化情况。结果表明:2种沥青经盐冻循环后,感温性能、高温性能、低温性能及其粘附性均有不同程度变化。In cold region,the salt freezing circulation would have a significant impact on the structural stability of the asphalt pavement.In this paper,through the freezing-thawing cycle test,the three indexes about the matrix asphalt and SBS（styrene-butadiene-styrene block copolymer）modified asphalt before and after the salt freezing circulation were conducted.At the same time,adhesion test of asphalt and coarse aggregate was improved.Also the changes of adhesion before and after salt freezing circulations were analyzed.The results showed that temperature sensitivity,high temperature performance,low temperature performance and adhesion of the two asphalts after salt freezing circulations were changed in different degrees.

关 键 词：沥青 盐冻循环 感温性能 粘附性 

分 类 号：U416.168[交通运输工程—道路与铁道工程]