Abstract: Amicroscopic random aggregate model of ultra-high performance concrete (UHPC) was developed based on the Monte Carlo method in this research. A microscale CA model, considering the influence of the random distributions of material composition and aggregate on the diffusion of chloride ions, was proposed for predicting chloride ion erosion on UHPC. Chloride ion erosion processes in UHPC with 4 different ratios were simulated, respectively. In addition, the simulation results were compared with the analytical solution achieved by Fick's second law and the experimental results. The results showed that the influence of the random distributions of aggregate, fiber, and interface transition zone for the chloride diffusion effect can be reflected by the CA model. The developed model can not only accurately represent the variation of the average chloride ion concentration of cross-section with depth, but also give the detailed probability distribution of chloride ion concentration at different depths. There are three distinct stages of chloride ions distribution in the UHPC section, including rapid descending stage, steady descending stage, and stable stage. The proposed model and method have certain reference significance to durability design of UHPC structures in chloride corrosion environment.
马俊军, 蔺鹏臻. 基于细观尺度的UHPC氯离子扩散预测CA模型[J]. 材料导报, 2022, 36(5): 21040188-6.
MA Junjun, LIN Pengzhen. Prediction CA Model of UHPC Chloride Ion Diffusion Based on a Mesoscopic Scale. Materials Reports, 2022, 36(5): 21040188-6.
1 Yang Lufeng, Zhou Ming, Chen Zheng.China Civil Engineering Journal, 2014, 47(10), 70(in Chinese). 杨绿峰, 周明, 陈正.土木工程学报, 2014, 47(10), 70. 2 Bao Jiuwen, Wei Jianan, Zhang Peng, et al. Journal of the Chinese Ceramic Society, 2020, 48(5), 689(in Chinese). 鲍玖文, 魏佳楠, 张鹏, 等.硅酸盐学报, 2020, 48(5), 689. 3 De Larrard F, Sedran T.Cement and Concrete Research, 1994, 24(6), 997. 4 Shi C, Wu Z, Xiao J, et al. Construction and Building Materials, 2015, 101, 741. 5 Zhang Yang, Dang Qi, Mu Cheng.Journal of Hunan University(Natural Sciences), 2017, 44(3), 8(in Chinese). 张阳, 党祺, 穆程. 湖南大学学报(自然科学版), 2017, 44(3), 8. 6 Pyo S, Tafesse M, Kim H, et al. Cement and Concrete Composites, 2017, 84, 175. 7 Roux N, Andrade C, Sanjuan M.Journal of Materials in Civil Enginee-ring, 1996, 8(1), 1. 8 Wang Yue, An Mingzhe, Yu Ziruo.Journal of Building Materials, 2016, 19(5), 810(in Chinese). 王月, 安明喆, 余自若. 建筑材料学报, 2016, 19(5), 810. 9 Denarié E, Brühwiler E. In: 7th Workshop on High Performance Fiber Reinforced Cement Composites. Stuttgart, 2015. 10 Pyo S, Koh T, Tafesse M, et al. Construction and Building Materials, 2019, 224, 206. 11 Bao Y, Meng W, Chen Y, et al. Materials Letters, 2015, 145, 344. 12 Bao Y, Valipour M, Meng W, et al. Smart Materials and Structures, 2017, 26(8), 085009. 13 Yu Hongfa, Sun Wei. Journal of Southeast University (Natural Science Edition), 2006, 36(2), 68(in Chinese). 余红发, 孙伟.东南大学学报(自然科学版), 2006, 36(2), 68. 14 Bai Yu, Tang Mengjie, Dong Jun, et al. Mathematics in Practice and Theory, 2019, 49(23), 99(in Chinese). 白羽,汤梦洁,董军, 等.数学的实践与认识, 2019, 49(23), 99. 15 Jin Libing, Wang Zhen, Zhang Qingzhang, et al. Journal of Henan University(Natural Science), 2020, 50(3), 347(in Chinese). 金立兵,王珍,张庆章,等.河南大学学报(自然科学版), 2020, 50(3), 347. 16 Liu Ziran, Yuan Chunkun, Li Shisen, et al. Journal of Waterway and Harbor, 2021, 42(1), 94(in Chinese). 柳子然,袁春坤,李世森, 等. 水道港口, 2021, 42(1), 94. 17 Juliano P V, Thomas S, Vicky T, et al. Cement and Concrete Research, 2019, 117, 38. 18 Ma Xinwei, Xue Huan, Qi Jinming, et al. Journal of Shenyang Jianzhu University(Natural Science), 2018, 34(1), 22(in Chinese). 马新伟, 薛欢, 祁锦明, 等. 沈阳建筑大学学报(自然科学版), 2018, 34(1), 22. 19 Ma Junjun, Lin Pengzhen.Journal of Yangtze River Scientific Research Institute, 2019, 36(6), 121(in Chinese). 马俊军, 蔺鹏臻. 长江科学院院报, 2019, 36(6), 121. 20 Biondini F, Bontempi F, Frangopol D M, et al. Journal of Structural Engineering, 2004, 130(11), 1724. 21 Shane J D, Mason T O, Jennings H M, et al.Journal of the American Ceramic Society, 2000, 83(5), 1137. 22 Gu Kunpeng, Wang Chengqi, Shi Beiling. Industrial Construction, 2008(8), 59(in Chinese). 谷坤鹏,王成启,时蓓玲.工业建筑, 2008(8), 59. 23 Du Xiuli, Jin Liu, Ma Guowei.Finite Elements in Analysis and Design, 2014, 85, 87. 24 avija B, Pacheco J, Schlangen E.Cement and Concrete Composites, 2013, 42, 30. 25 Jin Liu. Study on meso-scopic model and analysis method of concrete. Ph.D. Thesis, Beijing University of Technology, China, 2014(in Chinese). 金浏. 细观混凝土分析模型与方法研究.博士学位论文,北京工业大学, 2014. 26 Zhao S, Sun W.Construction and Building Materials, 2014, 63, 150. 27 Dobiáš D, Pernicová R.Advanced Materials Research, 2015, 1106, 21. 28 Piérard J, Bram D, Niki C. In: Symposium on Ultra-High Performance Fibre-Reinforced Concrete. Marseille, 2013, pp. 275.