水性环氧乳化沥青对冷再生混合料的性能影响  

Influence of waterborne epoxy emulsified asphalt on the performance of cold recycled mixture

作　　者：张弦 周超[1,2] 侯德华 李帅 ZHANG Xian;ZHOU Chao;HOUDe-hua;LI Shuai(Sichuan Engineering Technical College,Deyafig 618000,China;Henan Province Key Laboratory of High grade Highway Detection and Maintenance Technology,Xinxiang 453003,China;School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]四川工程职业技术学院,四川德阳618000 [2]河南省高等级公路检测与养护技术重点实验室,河南新乡453003 [3]哈尔滨工业大学交通科学与工程学院,黑龙江哈尔滨150090

出　　处：《热固性树脂》2021年第2期7-12,共6页Thermosetting Resin

基　　金：国家重点研发计划(2018YFE0120200);河南省创新示范专项(191110211500);河南省交通运输厅科技计划项目(2019G4)。

摘　　要：采用车辙试验、低温弯曲试验、劈裂试验以及配伍性试验研究水性环氧掺量对乳化沥青冷再生混合料路用性能和力学性能的影响,并基于荧光显微图像分析了水性环氧改善冷再生混合料性能的作用机理。结果表明,水性环氧乳化沥青可以显著提高冷再生混合料的高温抗变形能力,而少量水性环氧的使用对于冷再生混合料的低温抗弯曲能力影响不显著。当水性环氧添加质量分数为30%时,环氧树脂开始成为连续相,其抗水损磨耗能力及相应的完整率可分别提高281%和287%,因此水性环氧树脂的适宜添加质量分数为20%~30%。The influence of waterborne epoxy content on the road performance and mechanical properties of the cold recycled asphalt mixture was investigated by rutting test, low temperature bending test, splitting test and compatibility test. And based on the fluorescence microscopy image,the mechanism of waterborne epoxy to improve the properties of cold recycled mixture was analyzed.The results showed that the waterborne epoxy emulsified asphalt could significantly improve the high temperature resistance to deformation of cold recycled mixture.The use of a small amount of waterborne epoxy had no significant effect on the low-temperature bending resistance of cold recycled mixture. When the content of waterborne epoxy resin was 30%,the epoxy resin began to become a continuous phase. The ability to resist water damage abrasion and the integrity rate were increased by 281% and 287%,respectively,therefore the added mass fraction of water-based epoxy resin should be 20%-30%.

关 键 词：冷再生混合料 水性环氧树脂 耐变形 水损磨耗 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] U414[交通运输工程—道路与铁道工程]