矿物掺合料及外加剂对混凝土抗氯离子渗透性的试验研究  

Experimental Study on Mineral Admixtures and Additives' Resistance against Chloride Ion Penetration

作　　者：李张苗[1,2] 朱燕[2] 陈剑峰[2] 王鹏[2] 江帅[2] 

机构地区：[1]河海大学管理科学与工程博士后流动站,江苏南京210098 [2]南通职业大学建筑工程学院,江苏南通226007

出　　处：《南通航运职业技术学院学报》2015年第4期67-73,共7页Journal of Nantong Vocational & Technical Shipping College

基　　金：南通市科技项目"江苏沿海地区再生混凝土应用技术研究"(项目编号:HS2014045);南通职业大学科研课题"早强剂对混凝土抗氯离子侵蚀能力影响的研究"(项目编号:1407114);江苏省大学生创新训练计划项目"再生混凝土配合比设计及强度试验"(项目编号:201411052008Y)

摘　　要：文章针对江苏沿海(南通)地区盐渍土环境下混凝土结构耐久性研究,结合室内实验和现场工程数据的验证对比,通过氯离子在不同矿物掺合料及外加剂的混凝土结构中的扩散试验分析,由Fick扩散定律,推导出氯离子环境下混凝土结构初始腐蚀时间的计算公式,并对氯离子环境下影响混凝土保护层最小厚度进行了研究,为江苏沿海地区新建工程项目混凝土结构耐久性设计提供了保护层最小厚度的建议。Based on the study on the durability of concrete structure under the environment of saline soil in Nantong＇s coastal areas, in combination with the contrast between the data from the laboratory and field engineering, this article analyzes the experimental results of the diffusion of chloride ion in concrete structure with different mineral admixtures and additives. In addition, combined with Fick＇s law of diffusion, it comes up with the formula for the calculation of the initial corrosion time of concrete structure under the environment of chloride ion as well as studies the minimum thickness of the protective layer, which serves as a reference for the durability design of concrete structure of new engineering projects in Jiangsu＇s coastal areas.

关 键 词：氯离子渗透性 电通量 扩散系数 矿物掺合料 外加剂 

分 类 号：TU528[建筑科学—建筑技术科学]