新型氨基醇阻锈剂在氯盐污染钢筋混凝土中的应用（英文）

发布时间：2018-05-23 17:18

本文选题：混凝土 + 耐久性　；参考：《硅酸盐学报》2015年04期

【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3.50%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,还对掺加阻锈剂后对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。
[Abstract]:The antirust effect of a new amino alcohol as a mixed rust inhibitor was characterized. In the corrosion test, 0.35% sodium chloride solution and 3.50% sodium chloride solution were used as mixing water to simulate two kinds of representative chlorine salt pollution levels. The corrosion rate of steel bar and the corrosion inhibition effect after adding rust inhibitor were tested. The rust inhibition effect of calcium nitrite was compared with that of traditional calcium nitrite. At the same time, the influence of rust inhibitor on the strength of concrete and the surface morphology and chemical composition of steel bar after corrosion were studied. The results show that this new type of amino alcohol has no adverse effect on the flexural and compressive strength of concrete and can effectively inhibit the destruction of passivated film on the surface of reinforcement by chloride salt. The appearance of corrosion products on the surface of steel bars will be changed by the existence of corrosion inhibitor, but the chemical composition of corrosion products will not be affected.
【作者单位】：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;
【基金】：国家自然科学基金项目(51308261)
【分类号】：TU528.042.6

【共引文献】