Probabilistic Model of Cement Hydration and Numerical Simulation on Its Microstructure Evolution

被引：0
|
作者：
Yi J. [1 ]
Zuo X. [1 ]
Li L. [1 ]
Zou Y. [1 ]
机构：
[1] School of Science, Nanjing University of Science & Technology, Nanjing
来源：
Cailiao Daobao/Materials Reports | 2023年 / 37卷 / 18期
基金：
中国国家自然科学基金;
关键词：
cement hydration; microstructure evolution; model; numerical simulation;
D O I：
10.11896/cldb.22040014
中图分类号：
学科分类号：
摘要：
In order to numerically investigate the hydration process and microstructure evolution of cement, a probabilistic model was established by using the hydration mechanism of cement and the random probability method. Based on this model, the hydration of cement and its microstructure evolution was simulated by means of random movement and collision reaction of particle pixel of each mineral phase. then, the specimen of cement paste with water-cement ratios of 0.23, 0.35, and 0.53 were taken as research objects, and their hydration process and microstructure evolution were numerically simulated. Results show that, the water-cement ratio can significantly affect the hydration process of cement. At the same hydration time, the hydration degree of cement, porosity and pore connectivity have an obvious increase with the water-cement ratio. When the capillary pores in the microstructure of hardened cement paste are completely disconnected, the corresponding critical total porosity is about 20%. © 2023 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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