Capability of cement paste binding chloride ions with metakaolin as admixture
Capability of cement paste binding chloride ions with metakaolin as admixture
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发表时间：
2010
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通讯作者：
Ou-Yang Zhong-Wen
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作者：
Ou-Yang Zhong-Wen
以偏高岭土为矿物掺合料，研究了偏高岭土掺量、水泥浆体快速养护条件、研究了硫酸盐和金属阳离子的浓度对水泥净浆中氯离子结合率的影响，结果表明，掺加40%的偏高岭土后，水泥净浆中Friedel盐含量明显增加。偏高岭土的掺量可以最大限度地发挥水泥石对氯离子结合的正效应;高温养护对水泥石的氯离子结合有负效应，养护3 d后水泥石的氯离子结合率明显小于标准养护;金属阳离子对水泥石氯离子结合的影响为Ca 2 + Mg 2 +K+Na+.
Based on metakaolin as a mineral admixture,the influences of the factors such as the dosage of metakaolin,the condition of accelerated curing of cement paste,the consistency of sulfate and metallic cation on the binding rate of chloride ions in cement paste are researched.The experimental results show that the content of Friedel's salt is increased obviously in cement paste with adding metakaolin.40% dosage of metakaolin can maximize the positive effects of chloride ions binding in the cement paste.High temperature curing has negative effects on chloride ion binding of cement,and the chloride ion binding rate is significantly less than the standard curing after 3 days.The influence of metallic cation on the binding is Ca2+Mg2+K+Na+.