水敏感性试验在温拌沥青混合料水稳定性评价中的应用  

The Application of Water Sensitivity Test in Water Stability Evaluation of Warm MixAsphalt Mixture

作　　者：朱婧 韩用乡 李永江 ZHU Jing;HAN Yongxiang;LI Yongjiang(Sichuan Yaxi Expressway Co.,Ltd.,Chengdu 610000,Sichuan,China)

机构地区：[1]四川雅西高速公路有限责任公司,四川成都610000

出　　处：《工程技术研究》2023年第23期104-106,共3页Engineering and Technological Research

摘　　要：为了研究温拌沥青混合料的水稳定性评价指标,文章选取普通沥青AC-13C沥青混合料、掺入聚烯烃类A、表面活性剂类B及硫磺类C的四种混合料,比较经MIST预处理后的残留稳定度、劈裂强度比,以及冻融劈裂强度比三个评价指标。结果表明:冻融劈裂强度比和MIST劈裂强度比试验结果相近,具有较好的评价效果,且MIST劈裂强度比的试验效率明显高于冻融劈裂强度比;三种添加剂型温拌混合料的水稳定性由好到差的顺序依次为表面活性剂类温拌混合料、硫磺类温拌混合料、聚烯烃类温拌混合料。In order to study the water stability evaluation index of warm mix asphalt mixture,this paper selects ordinary asphalt AC-13C asphalt mixture mixed with polyolefin A,surfactant B and sulfur C,and compares the residual stability,splitting strength ratio and freezethaw splitting strength ratio after MIST pretreatment.The results show that the freeze-thaw splitting strength ratio result is similar to the MIST splitting strength ratio result,which has a good evaluation effect,and the test efficiency of MIST spliting strength ratio is obviously higher than that of freeze-thaw splitting strength ratio.The order of water stability of the three additive warm mix mixtures from good to poor is surfactant warm mix mixture,sulfur warm mix mixture,polyolefin warm mix mixture.

关 键 词：MIST 水敏感性试验 温拌沥青混合料 水稳定性评价 

分 类 号：U414[交通运输工程—道路与铁道工程] U416.2