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新型氨基醇阻锈剂在氯盐污染钢筋混凝土中的应用
作者:陈翠翠 蔡景顺 刘建忠 刘加平 
单位:高性能土木工程材料国家重点实验室 江苏省建筑科学研究院有限公司 南京211103 
关键词:混凝土 耐久性 氯盐污染 醇胺 阻锈 
分类号:TB503
出版年,卷(期):页码:2015,43(4):0-0
DOI:
摘要:

 对一种新型氨基醇作为掺入型阻锈剂使用的阻锈效果进行了表征。腐蚀试验中分别采用0.35%氯化钠溶液和3.5%氯化钠溶液为拌合水,模拟了两种有代表性的氯盐污染水平,对钢筋的腐蚀速率及掺加阻锈剂后的阻锈效果进行了测试,并与传统的亚硝酸钙的阻锈效果进行了对比。同时,还对阻锈掺加后混凝土强度的影响以及钢筋锈蚀后的表面形貌及化学组成进行了试验研究。结果表明,这类新型的氨基醇对混凝土抗弯及抗压强度均无不利影响,且能非常有效地抑制氯盐对钢筋表面钝化膜的破坏。阻锈剂的存在会引起钢筋表面锈蚀产物形貌的变化,但对锈蚀产物的化学组成影响不大。

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  Aminoalcohol as an inhibitor in chloride-contaminated steel reinforced concrete was prepared. The effect of aminoalcohol on the strength of concrete, surface morphology and chemical composition of steel bars was investigated. All the experiments were carried out in specimens with calcium nitrite. The results show that the prepared aminoalcohol has no negative effect on the concrete bending and compressive strength, and can inhibit the breakdown of the passive film of steel bar effectively. The morphologies of the rust products are different due to the use of different inhibitors, and there is little difference between their chemical compositions.

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基金项目:
基金项目:国家自然科学基金项目(51308261)。
作者简介:
第一作者:陈翠翠(1984—),女,工程师。
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参考文献:

 参考文献:

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