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在分析氨基醇类阻锈剂对混凝土和钢筋作用行为的基础上,给出了氨基醇类阻锈剂的阻锈机理,即一方面阻锈剂通过在钢筋表面形成保护膜,隔离侵蚀性离子到达钢筋表面,另一方面通过和混凝土中的水化产物反应生成沉淀,提高混凝土密实度。两者相辅相成,共同起到延缓钢筋腐蚀或降低钢筋腐蚀速率的作用。氨基醇类阻锈剂在碳化混凝土中的阻锈效果微乎其微,在氯盐环境中依然有效,但当混凝土中氯离子浓度或腐蚀速率较高时,其阻锈作用大幅降低。由于阻锈剂的成分较为复杂,其成膜机制等还需进一步的研究。

Based on analyzing the inhibition behavior of amino alcohol corrosion inhibitors to concrete and steel rebar, the inhibition mechanism of amino alcohol corrosion inhibitors was put out, which on the one hand form a protective film on the steel rebar surface, isolating corrosive ions from the surface of steel rebar, on the other hand react with the hydration products in concrete to precipitate, improving the compactness of concrete. The two are complimentary, which play the role in delaying corrosion and reducing steel corrosion rate. Amino alcohol corrosion inhibitors has minimum inhibition effect in carbonated concrete environment, and still has effect in chloride environment, but when the chloride ion concentration or the corrosion rate is high in concrete, the effect of corrosion inhibitors are significantly reduced. Because the composition of corrosion inhibitors is complicated, its membrane mechanism still needs to be researched further.

参考文献

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