硫酸盐
耐久性
氯化物
胶凝的
水泥
材料科学
离子
固化(化学)
复合材料
降级(电信)
使用寿命
化学工程
化学
冶金
有机化学
计算机科学
工程类
电信
作者
Othman Omikrine Metalssi,Rim Ragoug Touhami,Fabien Barberon,Jean‐Baptiste d'Espinose de Lacaillerie,Nicolas Roussel,Loïc Divet,Jean‐Michel Torrenti
标识
DOI:10.1016/j.cemconres.2022.107065
摘要
Chemical aggressions from the environment, such as salt ions, can damage reinforced concrete structures before they reach their service life. These deterioration mechanisms are coupled. The current research on cementitious material's durability has thus gradually shifted to the field of durability damage caused by the combined action of multiple factors. The research in this study concerns the case of combined chloride-sulfate attacks to provide a better understanding of the coupling phenomena by studying the mutual effect of the chloride and sulfate ions on the materials. The effect of the type of cement and curing duration on the chloride-sulfate attack is also investigated. Experimental results based on different investigation techniques (ICP, XRD, NMR, etc.) clearly show the competition between chloride and sulfate ions, and how the physico-chemical involved mechanisms completely change with respect to the cases of an exposure to a single type of ion.
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