1.重庆交通大学 土木工程学院，重庆 400074;2.招商局重庆交通科研设计院有限公司， 重庆 400067;3.招商局重庆公路工程检测中心有限公司，重庆 400067
李菁若（1988—），女，河南商丘人，招商局重庆交通科研设计院有限公司高级工程师，重庆交通大学博士生.E-mail：lijingruo@cmhk.com
U414
重庆市技术创新与应用示范专项产业类重点研发项目（cstc2018jszx-cyzdX0026）；重庆市环境保护局环保科技项目（环科字2016CF第（5）号）
1.School of Civil Engineering， Chongqing Jiaotong University， Chongqing 400074， China;2.China Merchants Chongqing Communications Technology Research and Design Institute Co.， Ltd.， Chongqing 400067， China;3.China Merchants Chongqing Highway Engineering Testing Center Co.， Ltd.， Chongqing 400067， China
为了实现焚烧飞灰（IFA）在沥青路面中的资源转化，将焚烧飞灰与水泥造粒以及与水泥、硅灰、粉煤灰造粒，研究掺有造粒颗粒沥青混合料的水稳定性以及冻融劈裂试验条件对其水稳定性的影响机制.结果表明：焚烧飞灰造粒后，氯离子浸出率分别降低了56.76%、59.12%；冻融劈裂试验条件对焚烧飞灰/水泥颗粒沥青混合料水稳定性影响顺序为抽真空过程＞冷冻过程＞击实次数，抽真空过程破坏造粒颗粒表面沥青膜，导致可溶氯盐溶出，氯盐溶液在冻融过程中产生的冻胀、盐胀与腐蚀综合作用是导致沥青混合料内部结构受损关键因素；焚烧飞灰与水泥、硅灰、粉煤灰造粒的方法能有效改善沥青混合料的水稳定性.
In order to realize the utilization of incineration fly ash （IFA） in asphalt pavement， the IFA was granulated with cement， and silica fume， coal ash. The water stability of asphalt mixture with granulated particles and the influence mechanism of freeze thaw splitting test conditions on its water stability were studied. The results show that after IFA is granulated， the chloride ion leaching rate decrease by about 56.76% and 59.12% respectively. The order of the influence of freeze thaw splitting test conditions on the water stability is vacuum extraction process>freezing process>compaction times. During the process of vacuum extraction， the asphalt film on the surface of IFA/cement granulated particles is destroyed， thus the soluble chloride is dissolved out， the combined action of frost heaving， salt heaving and corrosion of chloride solution in the course of freeze thaw cycle is the key cause of damage to the internal structure of asphalt mixture. The method of co-granulation of cement， silica fume， coal ash and IFA can effectively improve the water stability of asphalt mixture.
李菁若,唐伯明,刘瑞全,李聪,陈飞.焚烧飞灰颗粒对沥青混合料水稳定性的影响[J].建筑材料学报,2021,24(5):1048-1053
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