摘要
含氯盐及亚硝酸盐混凝土中,通过加速腐蚀试验肉眼观察确定了抑制钢筋腐蚀所需临界摩尔浓度NO-2/Cl-比。试验结果表明,随着氯离子含量的增加,抑制钢筋腐蚀所需临界摩尔浓度越高。当氯离子含量达到4kg/m3时,NO-2/Cl-摩尔比约大于1 2时能够完全抑制混凝土中钢筋腐蚀。
The measurements of the visual investigations by accelerated corrosion method of the reinforcing bars embedded in concrete containing various quantities of chloride salt and nitrite salt were conducted to determine the threshold value of molar ratio of NO^-_2/Cl^- that inhibits reinforcing bars from corrosion.This study confirmed that the threshold values increases with increasing proportion of chloride in the concrete.It is molar ratio of NO^-_2/Cl^-above 1.2 that can preserve the passive state of reinforcements adequately when chloride content is 4kg/m^3 in the concrete.
出处
《混凝土》
CAS
CSCD
2004年第1期19-21,共3页
Concrete
