INFLUENCE OF AIRCRAFT DEICER ON FREEZE-THAW DURABILITY OF HIGH PERFORMANCE CONCRETE  

飞机除冰液对高性能混凝土抗冻性的影响(英文)

作　　者：麻海燕[1,2] 曹文涛[3] 白康[4] 周鹏 韩丽娟 

机构地区：[1]南京航空航天大学航空宇航学院 [2]解放军理工大学工程兵学院 [3]江苏省交通科学研究院股份有限公司道桥规划设计二所 [4]江苏省交通科学研究院股份有限公司道路工程研究所 [5]南京市长安建筑规划设计有限公司结构室 [6]抚顺市规划设计研究院道路交通室

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2010年第4期306-312,共7页南京航空航天大学学报（英文版）

基　　金：Supported by the National Basic Research Program of China("973"Program)(2009CB623203);the China Postdoctoral Science Foundation(20070421036);the Natural Science Foundation of Jiangsu Province(BK2005216);the Research Foundation of Nanjing University of Aeronautics and Astronautics(NS2010015)~~

摘　　要：The influence of glycol,the main composition of the most frequently used aircraft dicer,on the freeze-thaw durability of high performance concrete（HPC）is investigated.Freeze-thaw durability of HPC is tested by accelerated freeze-thaw test.Four kinds of the solution,i.e.,tap water,3.5% NaCl solution,glycol solutions,and a LBR-A type commercial aircraft deicer are employed.Results show that freeze-thaw durability of HPC exposed to glycol solutions is closely related to the solution concentrations.The failure of HPC exposed to 3.5% glycol solution is similar to that of those exposed to 3.5% NaCl solution,i.e.,serious surface scaling.While the damage of HPC exposed to 12.5%—25% glycol solutions is postponed.Compared with glycol solution,the commercial aircraft deicer has much more negative effects on HPC freeze-thaw durability compared with 3.5% NaCl solution.In the presence of commercial aircraft deicer for HPC subjected to freeze-thaw cycles,the deterioration is mainly due to scaling and spalling.采用快冻法测定了高性能混凝土(HPC)在水、浓度为3.5%的NaCl除冰盐和3.5%—25%的乙二醇和商品飞机除冰液中的抗冻性。结果表明,乙二醇对HPC的冻融破坏与飞机除冰液的浓度有非常密切的关系,3.5%乙二醇溶液和3.5%NaCl溶液均对HPC表现出较严重的表面剥蚀,而12.5%—25%乙二醇溶液则能够延缓HPC的冻融破坏。与乙二醇化学试剂相比,浓度为25%的以丙二醇为主要成分的商品飞机除冰液对HPC相对动弹性模量的劣化程度甚至超过3.5%NaCl除冰盐。在冻融条件下,飞机除冰液主要导致HPC的表面剥蚀破坏。

关 键 词：concrete pavements DURABILITY aircraft deicer freeze-thaw cycles high performance concrete 

分 类 号：TU528[建筑科学—建筑技术科学]