机场水泥道面抗盐冻性能影响因素研究  

Study on Factors Influencing Frost Resistance of Airport Cement Pavement

作　　者：吕坚伟 Lv Jianwei(Construction Headquarters of Shanghai Airport(Group)Co.,Ltd.,Shanghai 200335)

机构地区：[1]上海机场(集团)有限公司建设指挥部,上海200335

出　　处：《工程技术研究》2020年第12期29-31,共3页Engineering and Technological Research

摘　　要：文章通过室内试验研究除冰液种类和剂量、含气量、水灰比和粉煤灰对机场道面混凝土抗盐冻性能的影响,得到最佳抗盐冻性能指标为剥落量;4%浓度醋酸钾溶液或乙二醇溶液下,盐冻破坏最为严重;建议最佳含气量为5%~7%,这样能使得加入引气剂后抗盐冻性能最佳;降低水灰比对非引气混凝土抗盐冻性能有显著影响,随着水灰比提高,盐冻破坏加剧;粉煤灰掺入会降低抗盐冻性能.In this paper,the effects of type and dose of deicing fluid,air content,water-cement ratio and fly ash on frost resistance performance of concrete in airport pavement were s tudied through laboratory experiments.The conclusion was drawn that the optimal frost resistance performance index was the amount of spalling.The frost damage was most serious under 4%concentration of potassium acetate solution or glycol solution.It is suggested that the best gas content should be 5%~7%,which can make the salt-frost resistance best after the addition of air entrainer.The reduction of water-cement ratio has a significant effect on the frost resistance of non-aerated concrete.The incorp oration of fly ash will reduce the salt-frost resistance.

关 键 词：机场道面混凝土 盐冻破坏 剥落量 影响因素 

分 类 号：U416[交通运输工程—道路与铁道工程]