岩沥青改性沥青混合料抵抗融雪剂侵蚀性能研究  

Research on Erosion Resistance of Rock Asphalt Modified Mixture to Snowmelt Agent

作　　者：索智 朱赫 巩梦洋 向繁荣 Suo Zhi;Zhu He;Gong Mengyang;Xiang Fanrong(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecure,Beijing 100044,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing 100044,China;Beijing Urban Transportation Infrastructure Engineering Technology Research Center,Beijing 100044,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京未来城市设计高精尖创新中心,北京100044 [3]北京城市交通基础设施建设工程技术研究中心,北京100044

出　　处：《市政技术》2022年第12期199-204,211,共7页Journal of Municipal Technology

基　　金：国家自然科学基金项目(52078024)。

摘　　要：为分析岩沥青改性沥青混合料抵抗融雪剂侵蚀的性能,采用“湿法”加工工艺,制备岩沥青改性沥青,并对改性沥青的物理性能进行分析;通过浸水马歇尔试验、冻融劈裂试验研究了岩沥青改性沥青混合料和基质沥青混合料在氯盐融雪剂的侵蚀作用下的指标变化,评价了岩沥青的掺入对沥青混合料在氯盐融雪剂侵蚀下抗剥落能力和水稳定性的影响。结果表明:岩沥青的掺入显著提升了沥青混合料抵抗氯盐融雪剂侵蚀的能力;随着岩沥青掺量的增加,改性沥青混合料抵抗氯盐融雪剂侵蚀的能力逐渐增强,经氯盐融雪剂侵蚀后,其抗剥落能力以及水稳定性相较于基质沥青混合料提升效果明显。In order to analyze the influence of rock asphalt modified asphalt mixture on the resistance to snow melt agent erosion, the “wet” processing technology was used to prepare the rock bitumen modified bitumen. The physical properties of the modified bitumen were analyzed;The index changes of rock asphalt modified asphalt mixture and matrix asphalt mixture under the action of chlorine salt snow melt were studied by immersion Marshall test and freeze-thaw splitting test. Under the action of chlorine salt snow melt, the influence of rock asphalt modification on the anti-spalling ability and water stability of asphalt mixture was evaluated. The results show that the modification of rock asphalt significantly improves the ability of asphalt mixture to resist the erosion of chlorine salt snow melt agent. With the increase of rock asphalt content, the ability gradually increases. After the erosion of chlorine salt snow melt agent, the anti-spalling ability and water stability of the modified asphalt mixture are significantly improved compared with the matrix asphalt mixture.

关 键 词：道路工程 岩沥青 氯盐融雪剂 抗侵蚀性能 水稳定性评价 

分 类 号：U416.217[交通运输工程—道路与铁道工程]