Abstract: Concrete structures such as concrete-faced rockfill dams and underwater tunnels are prone to calcium leaching due to water leakage, and will face durability issues under the coupled effects of calcium leaching and chloride penetration in complex water environments. To quantify the effect of calcium leaching on chloride penetration resistance of concrete in complex water environment, accelerated coupling corrosion tests, which were implemented by chemical solution immersion method for concrete with different water-cement ratio, were carried out to study the evolution of evaluation indexes of leaching and chloride diffusion, and microscopic mechanism was explored. The results showed that the chloride diffusion coefficient and chloride content of completely leached concrete were about 3.5 times and 1.3—2.0 times of those before leaching, respectively. The chloride diffusion coefficient decreased linearly from outside to inside in the leached zone, but the increasing rate of chloride content increased with the depth. The chloride ions adsorption capacity of leached concrete was significantly enhanced and still followed the linear adsorption model. The leaching resistance and chloride penetration resistance of ordinary cement-based concrete both decreased with the increase of water-cement ratio.
通讯作者:
*王少伟,常州大学城市建设学院副教授、硕士研究生导师。2006年河海大学水利水电学院水利水电工程专业本科毕业,2016年河海大学水利水电学院水工结构工程专业博士毕业后,到常州大学工作至今。目前主要从事混凝土结构健康监测及老化病害等方面的研究工作。以第一作者或通信作者发表论文40余篇,包括Science China-Technological Sciences、Structural Health Monitoring、Structural Control and Health Monitoring、Journal of Civil Structural Health Monitoring、《硅酸盐学报》等。shaowei2006nanjing@163.com
引用本文:
王少伟, 肖焰钰, 朱平华, 严先萃, 夏群. 钙溶蚀对混凝土抗氯离子侵蚀性能的影响[J]. 材料导报, 2024, 38(16): 23020121-7.
WANG Shaowei, XIAO Yanyu, ZHU Pinghua, YAN Xiancui, XIA Qun. Effect of Calcium Leaching on Chloride Penetration Resistance of Concrete. Materials Reports, 2024, 38(16): 23020121-7.
1 Zhou Y, Mu S, Pu C P, et al. Materials Reports, 2022, 36(4), 20120200 (in Chinese). 周莹, 穆松, 蒲春平, 等. 材料导报, 2022, 36(4), 20120200. 2 Wang Z X, Yao Z Q, He L, et al. Journal of Building Materials, 2021, 24(4), 766 (in Chinese). 王宗熙, 姚占全, 何梁, 等. 建筑材料学报, 2021, 24(4), 766. 3 Tang Y J, Zuo X B, Yin G J, et al. Construction and Building Materials, 2018, 174, 310. 4 Wang X C, Liu L. Materials Reports, 2016, 30(12), 124 (in Chinese). 王学成, 刘琳. 材料导报, 2016, 30(12), 124. 5 Wang S W, Xiao Y Y, Xu Y L, et al. Journal of the Chinese Ceramic Society, 2022, 50(2), 403 (in Chinese). 王少伟, 肖焰钰, 徐应莉, 等. 硅酸盐学报, 2022, 50(2), 403. 6 Yang H, Jiang L H, Zhang Y, et al. Construction and Building Materials, 2012, 29, 88. 7 Ding X P, Zhang J, Wang Q. Journal of Building Materials, 2017, 20(6), 827 (in Chinese). 丁小平, 张君, 王庆. 建筑材料学报, 2017, 20(6), 827. 8 Cheng X K, Xiao L F, Wu T T, et al. Journal of Transport Science and Engineering, 2020, 36(2), 73 (in Chinese). 程小康, 肖林发, 吴婷婷, 等. 交通科学与工程, 2020, 36(2), 73. 9 Sun C T, Song H, Niu D T, et al. Journal of Building Materials, 2016, 19(1), 35 (in Chinese). 孙丛涛, 宋华, 牛荻涛, 等. 建筑材料学报, 2016, 19(1), 35. 10 Wang Y Z, Fu K. Construction and Building Materials, 2019, 223, 595. 11 Carde C, Francois R, Torrenti J. Cement and Concrete Research, 1996, 26(8), 1257. 12 Liu Q F, Shen X H, Šavija B, et al. Cement and Concrete Research, 2023, 165, 107072. 13 Song Z J, Jiang L H, Chu H Q. Construction and Building Materials, 2017, 153, 211. 14 Choi Y S, Yang E I. Nuclear Engineering and Design, 2013, 259, 126. 15 Wan K S, Li L, Sun W. Cement and Concrete Research, 2013, 53, 44. 16 Yu B, Ma Q, Huang H C. et al. Construction and Building Materials, 2019, 215, 941. 17 Wang Y Y, Shui Z H, Gao X, et al. Construction and Building Materials. 2019, 222, 15. 18 Song Z J, Jiang L H, Zhang Z M, et al. Construction and Building Materials, 2016, 112, 925. 19 Sandberg P. Cement and Concrete Research, 1999, 29(4), 473. 20 Luo R, Cai Y B, Wang C Y, et al. Cement and Concrete Research, 2003, 33(1), 1.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
