硅酸盐学报

迁移性阻锈剂影响钢筋锈蚀速率的量化模型及应用

作者：杨维斌于蕾刘志勇王子潇宋宁

单位：烟台大学土木工程学院山东烟台 264005

分类号：TU 5

出版年,卷(期):页码：2015,43(3):839-844

DOI：

摘要：

应用电化学方法测试了不同氯盐含量混凝土试件在表面涂覆迁移性阻锈剂(MCI)后不同时刻钢筋的腐蚀电流密度，应用MCI渗透模型，计算不同渗透时间钢筋界面区的阻锈剂浓度，利用统计产品与服务解决方案软件SPSS(Statistical Product and Service Solutions)进行多元非线性统计分析，得到了混凝土中钢筋腐蚀电流密度与界面区MCI浓度、水溶性氯离子含量的量化模型，应用该模型并根据Broomfield准则，计算出使不同氯盐含量混凝土中锈蚀钢筋腐蚀速率降低到钝化状态所需的临界MCI浓度，进而确定在混凝土表面MCI的涂覆量。采用Java语言进行计算机编程，根据混凝土强度(孔隙率)、混凝土水饱和度、水溶性氯离子含量、钢筋锈蚀程度及保护层厚度等参数，计算并输出使混凝土中锈蚀钢筋腐蚀速率降低到钝化状态所需的MCI涂覆量及涂覆工艺。

The corrosion current (Icorr) of steel bar in chloride-contaminated concrete after painting migrating corrosion inhibitor (MCI) was examined via the electrochemical measurements. The inhibitor concentration in steel-concrete interface after painting MCI was calculated by the MCI transport model at different durations. A quantitative model for the relationship among Icorr of steel bar, MCI concentration in steel-concrete interface and water-soluble chloride content in concrete was proposed via multivariate nonlinear statistical analysis with a software named SPSS. This model can be used to calculate the minimum requirements of MCI concentration in steel-concrete interface in order to reduce the corrosion rate of corroded reinforcement in concrete with different chloride contents to the passivation state, thereby determining the amount of MCI painted on the surface of concrete per unit area. An instructional software was compiled in the Java language, which can give the amount of coated MCI after entering the concrete porosity, humidity, water-soluble chloride content, corrosion content of steel bar, thickness of cover and other parameters as well.

基金项目：

国家自然科学基金(51278443)；山东省自然科学基金(ZR2011EEM006)；烟台大学研究生创新基金(YJSZ201418)资助项目。

作者简介：

杨维斌(1988—)，男，硕士研究生。

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