硅酸盐学报Issue(2)：152-158,7.DOI:10.14062/j.issn.0454-5648.2015.02.04
浸水养护下混合水泥浆体孔溶液pH值对钢筋锈蚀的影响
Effect of pH value of Pore Solution on Corrosion-resistance of Steel Bar in Blended Cement Mortar under Water Curing Condition
摘要
Abstract
The effect of contents of fly ash and slag on the pH value of the cement paste pore solution was investigated. The corrosion phenomenon of different alkalinities cement mortars under water curing condition was analyzed based on the principles of electrochemistry of corrosion-pourbaix figure. The correlation between the pH value and corrosion-resistance was discussed. The results show that the pH value of fly ash cement paste pore solution reduces with the increase of fly ash content, when the content of fly ash in blended cement is up to 90%, the pH value drops to 8.5 at 730 d. When the pH value is<12.2, the steel in mortar corrodes slightly. When the pH value of the paste pore solution is<9, the steel in the mortar corrodes seriously.关键词
混合水泥/粉煤灰/矿渣粉/孔溶液pH值/钢筋锈蚀/浸水养护Key words
blended cement/fly ash/slag powder/pH value of pore solution/corrosion/water curing condition分类
建筑与水利引用本文复制引用
王培铭,庞敏,刘贤萍..浸水养护下混合水泥浆体孔溶液pH值对钢筋锈蚀的影响[J].硅酸盐学报,2015,(2):152-158,7.基金项目
国家自然科学基金(51102181)资助项目。 （51102181）
