Abstract: 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%.
易家俊, 左晓宝, 黎亮, 邹欲晓. 水泥水化过程的概率模型及其微结构演变的数值模拟[J]. 材料导报, 2023, 37(18): 22040014-7.
YI Jiajun, ZUO Xiaobao, LI Liang, ZOU Yuxiao. Probabilistic Model of Cement Hydration and Numerical Simulation on Its Microstructure Evolution. Materials Reports, 2023, 37(18): 22040014-7.
1 Liu Z Y, Xia X Z, Chen W W, et al. Materials Reports, 2021, 35(3), 3076 (in Chinese). 刘志勇, 夏溪芝, 陈威威, 等. 材料导报, 2021, 35(3), 3076. 2 Sun W. Durability evaluation and service life prediction of modern concrete, China Architecture and Building Press, China, 2015 (in Chinese). 孙伟. 现代结构混凝土耐久性评价与寿命预测,中国建筑工业出版社, 2015. 3 Jennings H M, Johnson S K. Journal of the American Ceramic Society, 1986, 69(11), 790. 4 Breugel K V. Cement and Concrete Research, 1995, 25(3), 522. 5 Ye G, Breugel K V, Fraaij A L A. Cement and Concrete Research, 2003, 33(2), 215. 6 Bentz D P. Journal of the American Ceramic Society, 2008, 80(1), 3. 7 Karapiperis T, Blankleider B. Physica D, 1994, 78(1), 30. 8 Bullard J W. Modelling and Simulation in Materials Science and Enginee-ring, 2007, 15(7), 711. 9 Bullard J W, Lothenbach B, Stutzman P E, et al. Journal of Materials Research, 2011, 26(4), 609. 10 Liu Z Y, Zhang Y S, Chen W W, et al. Journal of the Chinese Ceramic Society, 2021, 49(5), 955 (in Chinese). 刘志勇, 张云升, 陈威威, 等. 硅酸盐学报, 2021, 49(5), 955. 11 Liu C, Huang R, Zhang Y S, et al. Construction and Building Materials, 2018, 168, 362. 12 Merzouki T, Bouasker M, Khalifa N, et al. Construction and Building Materials, 2013, 44(44), 368. 13 Cao W. Journal of Eastem Liaoning University (Natural Science), 2009,16(2), 129 (in Chinese). 曹伟.辽东学院学报(自然科学版), 2009,16(2), 129. 14 Bentz D P. CEMHYD3D: a three-dimensional cement hydration and microstructure development modeling package, National Institute of Standards and Technology, USA, 2005. 15 Zheng J J, Pang X W, Xiong F F. Journal of Building Materials, 2008(4), 403 (in Chinese). 郑建军,庞宪委,熊芳芳. 建筑材料学报, 2008(4), 403. 16 Zheng S J, Liu T L, Jiang G S, et al. Materials Reports, 2020, 34(22), 22047 (in Chinese). 郑少军, 刘天乐, 蒋国盛, 等.材料导报, 2020, 34(22), 22047. 17 Taylor F H. Advances in Cement Research, 1989, 2(6), 76. 18 Wang P M, Zhao P Q, Liu X P, et al. Journal of Building Materials, 2015, 18(4), 692 (in Chinese). 王培铭, 赵丕琪, 刘贤萍, 等. 建筑材料学报, 2015, 18(4), 692. 19 Yu X, Yu C, Ran Q P, et al. Materials Reports, 2019, 33(14), 2337 (in Chinese). 余鑫, 于诚, 冉千平, 等. 材料导报, 2019, 33(14), 2337. 20 Zhang C L, Liu Q F. Materials Reports, 2022, 36(1), 69 (in Chinese). 张成琳, 刘清风. 材料导报, 2022, 36(1), 69. 21 Li X N, Zuo X B, Cui D, et al. Journal of Building Materials, 2020, 23(5), 1008 (in Chinese). 李向南, 左晓宝, 崔冬,等. 建筑材料学报, 2020, 23(5), 1008.
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2023, Vol. 37 
