Abstract Thermodynamic modeling was used to predict the stable hydrate phase assemblages in a ternary CSA-OPC-anhydrite system. On the basis of this modeling, five systems with diverging expected hydrate phases were chosen for experimental examination via QXRD and TGA. The aim of this study was to examine whether and to which extent the predicted equilibrium states are reached after 28 days of hydration. Qualitatively the predicted hydrate phase assemblages were reached for all five systems after 28 d of hydration. When the reaction degrees of the anhydrous phases are taken into account the experimental data fits remarkably well to the thermodynamic model. Additionally, C2S dissolution was found to be the most rapid in straetlingite forming environments.

中文翻译：

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应用热力学模型预测三元 CSA-OPC-硬石膏体系中稳定的水合物相组合并通过 QXRD 进行定量验证

摘要 热力学模型用于预测三元 CSA-OPC-硬石膏系统中稳定的水合物相组合。在此建模的基础上，通过 QXRD 和 TGA 选择了具有不同预期水合物相的五个系统进行实验检查。本研究的目的是检查在 28 天的水合作用后是否以及在多大程度上达到了预测的平衡状态。定性地，在水合 28 天后，所有五个系统都达到了预测的水合物相组合。当考虑无水相的反应程度时，实验数据与热力学模型非常吻合。此外，C2S 溶解被发现在紫晶石形成环境中是最快的。