Abstract This article presents a new model for the main hydration peaks of tricalcium silicate and alite on the assumption that C-S-H nucleates and grows as needles. The model relies only on directly observable quantities and reproduces the transition from the acceleration to deceleration periods without assuming a diffusion barrier or impingement. Simulations of the model based on measured characteristics of the grains and needles are compared with experimental data and satisfactory agreement is found across a wide range of experiments. Because the model disentangles the impact of each input parameter, it sheds new light on some aspects of alite hydration. In particular, the model provides a quantification of the impact of the consumption of the small grains and shows that it should not be neglected as soon as several tens of percent of the hydration reaction is reached. Finally, the article provides a critical examination of other models.

中文翻译：

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针模型：阿利特主水合峰的新模型

摘要 本文基于 CSH 成核和针状生长的假设，提出了硅酸三钙和阿利特的主要水合峰的新模型。该模型仅依赖于直接可观察的量，并在不假设扩散障碍或撞击的情况下再现从加速到减速期的过渡。将基于谷物和针叶的测量特征的模型模拟与实验数据进行比较，在广泛的实验中发现了令人满意的一致性。因为该模型解开了每个输入参数的影响，所以它对 alite 水合作用的某些方面提供了新的启示。特别是，该模型对消耗小颗粒的影响进行了量化，并表明一旦达到水合反应的百分之几十，就不应忽视它。最后，本文对其他模型进行了批判性检查。