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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。
In this paper, in order to study the durability of concrete structures in saline soil environment of Jiangsu coastal (Nantong) area, and to verify the comparison between laboratory and field engineering data, through the diffusion test analysis of chloride ions in concrete structures with different mineral admixtures and admixtures, Based on Fick’s law of diffusion, the formula of initial corrosion time of concrete structure in chloride environment was deduced, and the minimum thickness of concrete cover in chloride environment was studied, which provided the concrete structure durability design for the new construction project in Jiangsu coastal area Proposed minimum thickness of protective layer.