模拟混凝土孔隙液中N, N-二甲基乙醇胺的阻锈作用
Inhibition Effect of N, N-dimethyl Ethanolamine in Simulated Concrete Pore Solution
摘 要
考察了N, N-二甲基乙醇胺(DMEA)在模拟混凝土孔隙液中对钢筋的阻锈作用。通过动电位极化曲线和电化学阻抗谱对DMEA的阻锈效果进行测量和评估, 结果表明, 两种方法测量结果具有很好的一致性, 阻锈效果随着DMEA浓度的增加而加强。DMEA对盐水浸渍试验中的钢筋试棒具有良好的保护效果。混凝土凝结时间试验表明, 使用DMEA时加入占水泥量1‰的葡萄糖酸钠, 凝结时间和基准组最接近。
混凝土
极化曲线
电化学阻抗谱
凝结时间
migratory corrosion inhibitor
concrete
polarization curve
electrochemical impedance spectroscopy
setting time
Abstract
N, N-dimethyl ethanolamine(DMEA) was studied as rebar inhibitor in simulated concrete pore solution. Its inhibition effect was evaluated by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). The results of both measurements were in good agreement. The inhibition efficiency increased with increasing the inhibitor concentration. The immersion test in salt solution showed that DMEA provided efficient protection to steel rebar. With adding 1% sodium gluconate of the total amount of cement to the DMEA-containing concrete, the setting time was closest to that for the control group.
中图分类号 TG174.42
所属栏目 试验研究
基金项目 国家自然科学基金(20911140272), 上海市基础研究重点项目(09JC1406800)
收稿日期 2010/11/10
修改稿日期 2010/11/24
网络出版日期
作者单位点击查看
备注张大全, 教授, 博士,
引用该论文: WU Huan,GAO Li-xin,ZHANG Da-quan. Inhibition Effect of N, N-dimethyl Ethanolamine in Simulated Concrete Pore Solution[J]. Corrosion & Protection, 2011, 32(9): 681
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【2】Kosaki A. Evaluation method of corrosion life time of conventional stainless steel canister under oceanic air environment[J]. Nuc1 Eng Design, 2008, 238(5):1233-1240.
【3】刘志勇, 缪昌文, 周伟玲, 等. 迁移性阻锈剂对混凝土结构耐久性的保持和提升作用[J]. 硅酸盐学报, 2008, 10(36):1494-1450.
【4】张大全, 张万友, 王嵬, 等. 单氟磷酸钠在混凝土模拟孔隙液中的缓蚀特性[J]. 腐蚀与防护, 2007, 28(2):5-57.
【5】Morris W, Vico A, Vazquez M. Corrosion of reinforcing steel by means of concrete resistivity measurements[J]. Corros Sci, 2002, 44:81-99.
【6】Tritthart J. Transport of a surface-applied corrosion inhibitor in cement paste and concrete[J]. Cem Concr Res, 2003, 33:829-834.
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