Mechanisms of cement hydration
Mechanisms of cement hydration
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DOI：
10.1016/j.cemconres.2010.09.011
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发表时间：
2011-12-01
影响因子：
11.4
通讯作者：
Thomas, Jeffrey J.
中科院分区：
文献类型：
--
作者：
Bullard, Jeffrey W.;Jennings, Hamlin M.;Thomas, Jeffrey J.
综述了水泥水化机理的研究现状，包括石灰石和水泥缓慢反应期的起源、加速反应期的性质、硫酸钙对铝酸三钙反应速率的影响、硅酸盐和铝酸盐的相互作用以及减速期的动力学。此外，还发现了一些存在争议或认识上的空白，如早期表面水合物的性质及其对动力学的影响，加速期开始的机制起源，微观生长过程导致水化产物在更大长度尺度上的特征形态的方式，以及扩散在减速期所起的作用。本文最后对未来的研究需求进行了展望。Elsevier Ltd.出版。
The current state of knowledge of cement hydration mechanisms is reviewed, including the origin of the period of slow reaction in alite and cement, the nature of the acceleration period, the role of calcium sulfate in modifying the reaction rate of tricalcium aluminate, the interactions of silicates and aluminates, and the kinetics of the deceleration period. In addition, several remaining controversies or gaps in understanding are identified, such as the nature and influence on kinetics of an early surface hydrate, the mechanistic origin of the beginning of the acceleration period, the manner in which microscopic growth processes lead to the characteristic morphologies of hydration products at larger length scales, and the role played by diffusion in the deceleration period. The review concludes with some perspectives on research needs for the future. Published by Elsevier Ltd.