不同条件下迁移型阻锈剂对钢筋的阻锈效果研究  

Corrosion resistance of the migration corrosion inhibitor under different conditions

作　　者：田砾[1] 原梦晓 王鹏刚[1] 吕京录[1] 

机构地区：[1]青岛理工大学,山东青岛266033

出　　处：《混凝土》2017年第8期5-7,11,共4页Concrete

基　　金：国家自然科学基金(51508291);青岛市建设事业科技发展专项(JK2014-5)

摘　　要：为了更好的表征迁移型阻锈剂对钢筋的阻锈效果,探索阻锈剂的阻锈机理,分别在阻锈剂掺量,氯离子浓度、pH值、温度不同的混凝土模拟孔溶液中,通过线性极化和电化学阻抗谱研究了羧酸铵类有机阻锈剂对钢筋电化学行为的影响和阻锈作用。结果表明:不同条件下,添加阻锈剂后对钢筋均有较好的阻锈效果,且阻锈效率随着阻锈剂浓度的增加而提高。这说明阻锈剂可以吸附于钢筋表面形成钝化膜,抑制钢筋锈蚀。In order to characterize the inhibition effect of migration corrosion inhibitor on steel bar and explore the mechanism of corro- sion inhibition, it research the ammonium carboxylate organic inhibitor＇s effect on electrochemical behavior of reinforced electrode and the influence on preventing steel corrosion by linear polarization and electrochemical impedance spectrum in concrete simulated pore solution with different corrosion inhibitor dosage, chloride ion concentration, pH and temperature.The results show that adding corrosion inhibitor has better rust resistance effect on the steel bar under different conditions, and the efficiency of the corrosion inhibition efficiency increases with the increase of the concentration of the corrosion inhibitor.It is proved that the corrosion inhibitor can form a passive film on the steel surface to inhibit the corrosion of the steel bar.

关 键 词：迁移型阻锈剂 氯离子浓度 PH值 温度 电化学测试 

分 类 号：TU528[建筑科学—建筑技术科学]