摘要
针对目前沥青路面坑槽修复材料在雨季难以修复或修复后稳定性、耐久性差等问题,利用水性环氧树脂、乳化沥青和水泥基胶凝材料三者进行复合,制备一种具有高早强、稳定性优良的水性环氧树脂-乳化沥青-水泥(EAC)快速修复材料,研究不同水性环氧树脂掺量对其力学性能和路用性能的影响,并采用XRD、SEM和IR分析其微观特性。结果表明,水性环氧树脂的掺入使EAC快速修复材料2 h强度略有降低,但可显著增加其后期强度,且在一定范围内增大其掺量可提高修复材料的高低温性能和水稳定性。微观测试结果显示,水性环氧树脂可延缓胶凝材料的水化进程,延迟CH的结晶;适量的水性环氧树脂可提高EAC快速修复材料的致密性。
In view of the problem that the pit repair materials of asphalt pavement are difficult to repair in rainy season or have poor stability and durability after repair,a rapid repair material,waterborne epoxy resin-emulsified asphalt-cement(EAC),with high early strength and high stability is designed by combining waterborne epoxy resin,cement cementitious materials and emulsified asphalt in this study.The influence of waterborne epoxy resin content on mechanical properties and pavement performance of rapid repair material is investigated.Besides,the micro-structures are tested and analyzed by XRD,SEM and IR tests.Results indicate that the addition of waterborne epoxy resin can slightly reduce the 2 h strength of EAC rapid repair material,but can significantly increase its later strength.The high temperature resistance,low temperature resistance and moisture susceptibility are improved as the content of waterborne epoxy resin increasing in a certain range.The microscopic test results show that waterborne epoxy resin can delay the hydration process of cementitious materials and the crystallization of CH.The compactness of EAC rapid repair material can be improved by introducing an appropriate amount of waterborne epoxy resin.
作者
郝肖雨
田耀刚
赵成
黄显龙
纪括
齐琳
贾侃
HAO Xiaoyu;TIAN Yaogang;ZHAO Cheng;JIANG Jing;HUANG Xianlong;JI Kuo;QI Lin;JIA Kan(School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China;Northwest Civil Airport Construction Refco Group Led, Xi'an 710075, China)
出处
《功能材料》
CAS
CSCD
北大核心
2021年第12期12210-12215,共6页
Journal of Functional Materials
基金
国家自然科学基金项目(51878065)
中央高校基本科研业务费专项项目(300102319201)
陕西省自然科学基金项目(2017JM5030)
广东省交通运输行业重点科技项目(19-09)
陕西省交通厅项目(20-30X,19-06K)。
关键词
水性环氧树脂
水泥乳化沥青
快速修复材料
力学性能
路用性能
waterborne epoxy resin
cement emulsified asphalt
rapid repair material
mechanical properties
pavement performance
