Dissolution rates during the early hydration of tricalcium silicate
Dissolution rates during the early hydration of tricalcium silicate
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DOI：
10.1016/j.cemconres.2015.02.002
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发表时间：
2015-06-01
影响因子：
11.4
通讯作者：
Damidot, Denis
中科院分区：
文献类型：
--
作者：
Bellmann, Frank;Sowoidnich, Thomas;Damidot, Denis
本研究对含有外来氧化物的三斜硅酸三钙的水化进行了研究。应用50和0.50的两个水/固体比。通过热分析、孔隙溶液分析和量热法等方法的组合来分析反应动力学。根据这些数据，计算水合过程中反应速率的演变。将结果与硅酸三钙在不饱和溶液中的自由、无约束溶解进行比较。在连接到 ICP-OES 仪器的溶解池中对这种溶解速率进行了分析。将没有水合物沉淀的自由溶解速率与反应速率进行比较表明，硅酸三钙的溶解比整体过程的反应速率快得多。 (C) 2015 Elsevier Ltd. 保留所有权利。
The hydration of triclinic tricalcium silicate containing foreign oxides was investigated in this study. Two water/solid-ratios of 50 and 0.50 were applied. The kinetics of the reaction was analyzed by a combination of methods including thermal analysis, pore solution analysis, and calorimetry. From these data, the evolution of the rate of reaction during hydration was calculated. The results were compared to the free, unconstrained dissolution of tricalcium silicate in undersaturated solutions. Such dissolution rates were analyzed in a dissolution cell connected to an ICP-OES instrument A comparison of the free dissolution rate in the absence of precipitation of hydrates to the rate of reaction showed that the dissolution of tricalcium silicate is much faster than the rate of reaction of the global process. (C) 2015 Elsevier Ltd. All rights reserved.