摘要
利用吸水性树脂吸水膨胀、密实孔隙、截断侵蚀性介质传输路径的新方法,研究了砂浆经原位合成吸水性树脂处理前后其内部预埋钢筋的腐蚀行为.实验以氯离子渗透系数、氯盐加速腐蚀条件下钢筋腐蚀电位及极化电流密度的动态变化评定了该方法的可行性.结果表明:砂浆经原位合成吸水性树脂表层处理后,氯离子渗透系数和钢筋腐蚀速率明显减小.
A novel method, by which super-absorbent resin （SAR） is synthesized in pores of cement mortar and becomes swollen hydrogel after absorbing water to fill pores of cement mortar and cut off the penetrating path of chloride ions, was used to treat the cement mortar and then the eorroson behavior of reinforcing steel embedded in cement mortar was studied. The feasibility of the method was evaluated by mesearing the penetration coefficient of chloride ions, the dynamic half-cell potential and linear polarization current density of reinforcing steel. The results indicate that the penetration coefficient of chloride ions and the corrosion rate of reinforcing steel in cement mortar treated by the synthesized SAR are reduced obviously.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2008年第5期324-327,共4页
Corrosion Science and Protection Technology
基金
陕西省教育厅自然基金专项(No.06JK252)资助
关键词
钢筋锈蚀
腐蚀电位
氯离子渗透
高吸水性树脂
corrosion of reinforcing steel
half-cell potential
penetration of chloride ions
super-absorbent resin
