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Quantitative Characterization of Hydration of Cement Pastes by Rietveld Phase Analysis and Thermoanalysis

机译：Rietveld相分析和热分析定量表征水泥浆的水化

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The quantitative characterization of hydration of cement pastes has always been one of focuses of researchers' attention. Rietveld phase analysis, a combination of quantitative X-ray diffraction and the Rietveld method, supplies a tool of an enormous potential for that. Although a few of related researches were conducted by RPA, the reported attention was not paid to the neat cement paste with a low w/c ratio. Therefore, this work aimed at the quantitative study on hydration of such a cement paste chiefly by this method, meanwhile, cooperated with the hyphenated technique of thermogravimetry with differential scanning calorimetry, as a spot check. Results indicated that RPA was a reliable method in quantitatively characterizing hydration of cement pastes, and gave a clear decription of evolution of all main crystal phases in cement pastes; and that the evolution of monosulphate (Afm_12) was also able to be tracked quantitatively. This will help to understand better the hydration mechanism of cement pastes, as well as to investigate quantitatively effects of mineral and chemical admixtures on hydration of composite cementitious systems.
机译：水泥浆水化的定量表征一直是研究人员关注的焦点之一。 Rietveld相分析是定量X射线衍射和Rietveld方法的结合，为此提供了巨大的潜力。尽管RPA进行了一些相关研究，但报告的关注并未引起w / c低的纯净水泥浆的注意。因此，这项工作的主要目的是通过这种方法对这种水泥浆的水化进行定量研究，与此同时，与热重分析技术和差示扫描量热法联用，进行了现场检查。结果表明，RPA是定量表征水泥浆水化的可靠方法，并且清楚地说明了水泥浆中所有主要晶体相的演化。而且也可以定量追踪单硫酸盐（Afm_12）的演变。这将有助于更好地了解水泥浆的水化机理，并定量研究矿物和化学掺合料对复合胶凝体系水化的影响。

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