基于水性环氧乳化沥青的超薄磨耗层级配设计及性能对比研究  

Study on Grade Design and Comparative Performance of Ultra-thin Abrasion Layer Based on Waterborne Epoxy Emulsified Asphalt

作　　者：周铭钰 刘曙光 吴超凡 刘军 张恒龙[1] 张帅[1] 李启石 ZHOU Mingyu;LIU Shuguang;WU Chaofan;LIU Jun;ZHANG Henglong;ZHANG Shuai;LI Qishi(Key Laboratory for Green&Advanced Civil Engineering Materials and Application Technology of Hunan Province,Hunan University,Changsha 410082,China;Hunan Tongtai Engineering Co.,Ltd.,Changsha 410018,China;Hunan Communications Engineering Polytechnic,Changsha 410132,China)

机构地区：[1]湖南大学绿色先进土木工程材料及应用技术湖南省重点实验室,长沙410082 [2]湖南省通泰工程有限公司,长沙410018 [3]湖南交通职业技术学院,长沙410132

出　　处：《材料导报》2024年第24期261-268,共8页Materials Reports

基　　金：国家自然科学基金面上项目(52378449);湖南省交通科技进步与创新计划项目(202248)。

摘　　要：为方便在实际工程中选择合适类型的水性环氧乳化沥青超薄磨耗层,本工作采用先乳化后改性的方法制备水性环氧树脂改性乳化沥青。选择AC-10、SMA-10、UWM-10三种不同级配的超薄磨耗层,通过修正的马歇尔试验确定各类型混合料的最佳乳液含量,并通过马歇尔模数、蠕变变形量、破坏拉伸应变、冻融劈裂强度比、动态模量、疲劳寿命次数、构造深度等评价指标对它们的混合料各项性能进行了检验对比。结果表明:超薄磨耗层AC-10、SMA-10、UWM-10的最佳乳液含量分别为8.7%、8.5%和7.6%。相比空白样,水性环氧树脂的加入显著改善了超薄磨耗层混合料的高温稳定性能、抗水损害性能、抗疲劳性能以及抗滑性能。三种超薄磨耗层中,AC-10的低温抗裂性能较强,SMA-10和UWM-10的高温稳定性能和抗疲劳性能较好,与此同时,UWM-10表现出更加优异的抗水损害能力及抗滑性能。In order to selecta suitable type of water-based epoxy emulsified asphalt ultra-thin wear layer in practical engineering,in this work water-based epoxy emulsified asphalt was prepared by first emulsifying and then modification,Three kinds of ultra-thin wear layers,AC-10,SMA-10,UWM-10,were tested by modified Marshall test to obtain the optimum emulsion content of each type mixture.And then the properties of these ultra-thin wear layers were tested and compared by Marshall modulus,creep deformation,failure tensile strain,freeze-thaw splitting tensile strength ratio,dynamic modulus,fatigue life,structural depth and swing value.The results showed that the optimal emulsion content of AC-10,SMA-10 and UWM-10 ultra-thin wear layer is 8.7%,8.5%and 7.6%,respectively.Compared between the sample with and without water-based epoxy resin,the addition of water-based epoxy resin should significantly improve the high temperature property,water stability property,fatigue property and skid resistance of the ultra-thin wear layer.Among the three types of ultra-thin wear gradation,AC-10 has stronger low temperature cracking resistance,while SMA-10 and UWM-10 have better high temperature stability and fatigue performance,and UWM-10 also showed better water damage resistance and skid resistance.

关 键 词：超薄磨耗层 水性环氧树脂 乳化沥青混合料 配合比设计 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]