冻融条件下引气剂对储水池混凝土抗渗性能的影响  

The Infl uence of Air-entraining Agent on Impermeability of Water Storage Tank Concrete under Freezing and Thawing Condition

作　　者：蒋艳坤 耿瑞博 蒋游 王凌霄 张亚辉 JIANG Yankun;GENG Ruibo;JIANG You;WANG Lingxiao;ZHANG Yahui(China Construction Fifth Engineering Division Corp.,Ltd.,Changsha 410011,Hunan,China)

机构地区：[1]中国建筑第五工程局有限公司,湖南长沙410011

出　　处：《工程技术研究》2025年第1期32-34,共3页Engineering and Technological Research

摘　　要：为研究冻融条件下引气剂对混凝土抗渗性能的影响,文章通过对照的方式,对比掺入引气剂和不掺入引气剂对混凝土性能的影响,分析引气剂对混凝土氯离子迁移系数、质量损失率、强度损失率等因素的影响。研究结果表明,混凝土中掺入引气剂,对混凝土抗氯离子渗透性能起到积极作用,且当引气剂的含量为1.13 kg/m^(3)时,氯离子的迁移系数降到2.4×10^(-12)m^(2)/s。在冻融循环条件下,引气剂含量为1.13 kg/m^(3)的混凝土,质量损失率和强度损失率在冻融循环200次后分别达到7%和9.32%,小于引气剂含量为0时混凝土的质量损失率和强度损失率,对于气温较低地区的混凝土起到了保护作用。In order to study the influence of air-entraining agent on the impermeability of concrete under freezing and thawing condition,this paper compares the influence of air-entraining agent and no air-entraining agent on the performance of concrete by means of comparison,and analyzes the influence of air-entraining agent on chloride ion migration coefficient,mass loss rate and strength loss rate of concrete.The results show that the incorporation of air-entraining agent into concrete plays a positive role in the anti-chlorine ion penetration performance,and the migration coefficient of chloride ion decreases to 2.4×10^(-12) m^(2)/s when the content of air-entraining agent is 1.13 kg/m^(3).Under the freezing and thawing cycle condition,the mass loss rate and strength loss rate of concrete with air-entraining agent content of 1.13 kg/m^(3) reache 7%and 9.32%respectively after 200 freezing and thawing cycles,which are less than the mass loss rate and strength loss rate of concrete with air-entraining agent content of 0,and can playe a protective role for concrete in low temperature areas.

关 键 词：冻融条件 引气剂 储水池 混凝土抗渗性能 

分 类 号：TU528.042[建筑科学—建筑技术科学]