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Kinetic analysis of C-S-H growth on calcite
Cement and Concrete Research ( IF 10.9 ) Pub Date : 2018-01-01 , DOI: 10.1016/j.cemconres.2016.07.017
George W. Scherer , Frank Bellmann

Abstract Data for the rate of formation of calcium-silicate-hydrate on a calcite substrate are fitted to a model for growth of ellipsoidal particles. The time-dependent driving force for growth is calculated using a solid solution model for calcium-silicate-hydrate. The nucleation density and particle shape are estimated from SEM photos. Good agreement is found for the rate of growth and the fractional coverage of the substrate. The growth rate is found to have a cubic dependence on the supersaturation, and to be sensitive to the concentration of calcium hydroxide when that component is undersaturated.

中文翻译:

CSH在方解石上生长的动力学分析

摘要 方解石基底上硅酸钙水合物形成速率的数据拟合到椭圆体颗粒生长模型中。生长的时间相关驱动力是使用硅酸钙水合物的固溶体模型计算的。从SEM照片估计成核密度和颗粒形状。发现生长速率和基材的部分覆盖率具有良好的一致性。发现生长速率对过饱和度具有三次依赖性,并且当该组分不饱和时对氢氧化钙的浓度敏感。
更新日期:2018-01-01
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