Chloride Binding in Monosulfoaluminate Hydrate
Chloride Binding in Monosulfoaluminate Hydrate
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单磺铝酸盐水合物中的氯离子结合
DOI：
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发表时间：
2012
影响因子：
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通讯作者：
Zhang, Hai-Bo1
中科院分区：
文献类型：
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作者：
Gou, Mi-Feng1;Guan, Xue-Mao1;Zhang, Hai-Bo1
水泥中的氯离子结合可以降低混凝土中钢筋锈蚀的风险。通过X射线衍射等分析方法研究了氯离子浓度、腐蚀液成分、温度对水合硫铝酸盐中氯离子结合的影响。结果表明，游离氯与结合氯离子之间的结合关系可用Freundlich等温式来描述。水合硫铝酸盐的氯离子结合是由于氯离子和硫酸盐离子交换形成Friedel盐所致。与钠离子相比，腐蚀溶液中的钙离子可以增加水合硫铝酸盐中的氯离子结合能力。随着温度的升高，水合硫铝酸盐中的氯结合能力降低。
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 Friedel's 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.