Similarity Analysis of Chloride Diffusion Coefficient of Concrete Exposed to Marine Tidal Zone
YANG Yulong1, SHAN Lianfei1, ZHUANG Zhijie2, BAO Jiuwen1,*, CUI Yifei1
1 School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China 2 Sobute New Materials Co., Ltd., Nanjing 211103, China
Abstract: Chloride ingress behavior is one of the main reasons to cause the durability failure of concrete structures. It is of great significance to study chloride transport behavior in concrete and further establish the corresponding transport theory for durability evaluation of marine concrete. At present, there are relatively few studies on the relationship between real sea exposure and indoor simulated tidal areas action for the chloride ingress into concrete, and the similar mechanism of chloride ion erosion is still unclear. Based on this, a time-varying model of chloride diffusion coefficient under different marine environmental zones and water-cement ratios was established according to the conducted experimental investigations. The similarity analysis of chloride diffusion coefficient of concrete with different mix ratios exposed to the real-marine and indoor simulated environments was carried out. Combining with the model of Fick's second law, the similarity analysis method of chloride diffusion coefficient considering the time-varying characteristics was proposed. The research shows that a time-varying model by using the power function can well describe the variation of chloride diffusion coefficient over time, which is more in line with the actual situation. According to the experimental analysis for the real sea exposure and the indoor simulation test, the similarity of apparent chloride diffusion coefficient gradually becomes stable as time goes by. It is effective to predict the chloride ingress behavior under long-term exposure in the real sea by using the short-term indoor simulation data, which provides a theoretical basis for the durability evaluation and life prediction of concrete exposed to the marine tidal zone.
1 Bao J W, Zhuang Z J, Zhang P, et al. Materials Reports, 2021, 35(7), 7087(in Chinese). 鲍玖文, 庄智杰, 张鹏, 等. 材料导报, 2021, 35(7), 7087. 2 Zhang J H, Fang C. Journal of Materials Science and Engineering, 2019, 37(5), 848(in Chinese). 张菊辉, 方成. 材料科学与工程学报, 2019, 37(5), 848. 3 Bao J W, Kong L Y, Zhang X Y, et al. Acta Materiae Compositae Sinica, 2023, 41(4), 2137(in Chinese). 鲍玖文, 孔令艳, 张心钰, 等. 复合材料学报, 2024, 41(4), 2137. 4 Tong L Y, Qing X X, Zhang Z D, et al. Cement and Concrete Research, 2024, 176, 107351. 5 Sun J, Jin Z Q, Chang H L, et al. Journal of Building Engineering, 2024, 84, 108591. 6 Zhang Z, Niu Q, Liu X, et al. ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A:Civil Engineering, 2021, 7(4), 04021061. 7 Zhang Z, Ren X, Niu Q, et al. Structures, 2023, 48, 159. 8 Xu Y, Gao Y, Yu H, et al. Journal of Building Engineering, 2023, 76, 107379. 9 Shao W, He X, Shi D. Engineering Failure Analysis, 2022, 136, 106184. 10 Lian S, Meng T, Zhao Y, et al. Structures, 2023, 52, 1020. 11 Dong Q, Zheng H R, Zhang L J, et al. Construction and Building Materials, 2023, 405, 133237. 12 Xiong Q X, Liu Q F, Zhang X J, et al. Journal of Materials in Civil Engineering, 2022, 34(11), 04022309. 13 Chen W K, Liu Q F. Journal of Hydraulic Engineering, 2021, 52(5), 622(in Chinese). 陈伟康, 刘清风. 水利学报, 2021, 52(5), 622. 14 Meng Z Z, Zhang Y, Chen W, et al. Transport in Porous Media, 2024, 151(2), 339. 15 Mangat P S, Molloy B T. Materials and Structures, 1994, 27(6), 338. 16 Tang L P, Gulikers J. Cement and Concrete Research, 2007, 37(4), 589. 17 Huang J. Similarity study of chloride ion erosion simulation test of cement-based materials in tidal range. Master's Thesis, Zhejiang University of Technology, China, 2013 (in Chinese). 黄俊. 潮差区水泥基材料氯离子侵蚀模拟试验的相似性研究. 硕士学位论文, 浙江工业大学, 2013. 18 Zhang J Z, Zhao J, Zhang Y R, et al. Construction and Building Materials, 2018, 167(10), 225. 19 Stanish K, Thomas M. Cement and Concrete Research, 2003, 33(1), 55. 20 Wei J N. Indoor simulation of chloride ion erosion of concrete in splash zone and study of exposure similarity in real sea. Master's Thesis, Qingdao University of Technology, China, 2021 (in Chinese). 魏佳楠. 浪溅区混凝土氯离子侵蚀的室内模拟和实海暴露相似性研究. 硕士学位论文, 青岛理工大学, 2021. 21 Bao J W, Wei J N, Zhang P, 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. 22 Zhuang Z J. Study on chloride ion erosion mechanism of cement-based materials in real sea exposure and artificial simulated tidal zone. Master's Thesis, Qingdao University of Technology, China, 2021(in Chinese). 庄智杰. 实海暴露和人工模拟潮汐区水泥基材料氯离子侵蚀机理研究. 硕士学位论文, 青岛理工大学, 2021. 23 Hong K, Hooton R D. Cement and Concrete Research, 1999, 29(9), 1379. 24 Ožbolt J, Balabanić G, Periškić G, et al. Construction and Building Materials, 2010, 24(9), 1638. 25 Jin W L, Zhao Y X. Durability of concrete structures, Science Press, China, 2002, pp. 79(in Chinese). 金伟良, 赵羽习. 混凝土结构耐久性, 科学出版社, 2002, pp. 79. 26 Jin L B. Multiple environmental time similarity theory and its application to durability of coastal concrete structures. Ph. D. Thesis, Zhejiang University, China, 2008(in Chinese). 金立兵. 多重环境时间相似理论及其在沿海混凝土结构耐久性中的应用. 博士学位论文, 浙江大学, 2008. 27 Chen W. Time-varying similarity and microscopic mechanism of chloride infiltration in cement-based materials under simulated tidal range. Master's Thesis, Zhejiang University of Technology, China, 2016 (in Chinese). 陈伟. 模拟潮差环境下水泥基材料氯离子渗透时变相似性及微观机理. 硕士学位论文, 浙江工业大学, 2016. 28 Wang L. Study on durability of polypropylene fiber concrete under dry and wet cycle. Master's Thesis, Xi'an University of Architecture and Technology, China, 2011 (in Chinese). 王磊. 聚丙烯纤维混凝土在干湿循环条件下的耐久性研究. 硕士学位论文, 西安建筑科技大学, 2011. 29 Ministry of Transport of the People's Republic of China. Technical specification for test and inspection of concrete for waterborne engineering:JTS/T 236-2019. Standards Press of China, China, 2019(in Chinese). 中华人民共和国交通运输部. 水运工程混凝土试验检测技术规范:JTS/T 236-2019. 中国标准出版社, 2019.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2025, Vol. 39 
