| 摘要: |
| 通过化学分析法、X射线衍射法（XRD）研究了侵蚀液的浓度、溶液组成、温度对单硫型水化硫铝酸钙固化氯离子的影响.结果表明：单硫型水化硫铝酸钙固化氯离子的关系适合Freundlich非线性关系；单硫型水化硫铝酸钙对氯离子的固化是通过氯离子与硫酸根的离子交换作用生成了Friedel盐而成；与钠离子相比，侵蚀液中的钙离子能增加单硫型水化硫铝酸钙固化氯离子的能力；随着温度的升高，单硫型水化硫铝酸钙固化氯离子的能力降低. |
| 关键词: 单硫型水化硫铝酸钙 固化 氯离子 温度 |
| DOI：10.3969/j.issn.1007 9629.2012.06.025 |
| 分类号: |
| 基金项目:国家重点基础研究发展计划（973计划）项目（2009CB623106） |
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| Chloride Binding in Monosulfoaluminate Hydrate |
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GOU Mi feng, GUAN Xue mao, ZHANG Hai bo
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School of Materials Science & Engineering, Henan Polytechnic University, Jiaozuo 454003, China
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| Abstract: |
| Chloride binding in cement can reduce the risk of steel corrosion of concrete. The influence of chloride concentration, composition of corrosion solution, temperature on chloride binding in monosulfoaluminate hydrate was investigated by analytical methods including X ray diffraction. The results show that the binding relationships between free and bound chloride can be described by the Freundlich isotherm. Chloride binding of monosulfoaluminate hydrate is attributed to the formation of Friedels salt through ions exchange of chloride ions and sulfate ions. Calcium ions of corrosion solution can increase chloride binding capacity in monosulfoaluminate hydrate comparing with sodium ions. The chloride binding ability in monosulfoaluminate hydrate reduces with rise of temperature. |
| Key words: monosulfoaluminate hydrate binding chloride ion temperature |
