- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | MA Junjun, LIN Pengzhen, LIU Yinglong, HE Zhigang. Simulation and Analysis of Chloride Ion Diffusion in Cracked Concrete Based on Cellular Automata[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 360-368. doi: 10.3969/j.issn.0258-2724.20210359
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In order to obtain the concentration distribution of chloride ions in cracked concrete and analyze the influence of crack shape, distribution form and deflection angle on the chloride ion diffusion in concrete, a cellular automata model for simulating the diffusion process of chloride ions in cracked concrete is established by using cellular automata and homogenization equivalent analysis methods according to the diffusion mechanism of chloride ions in cracked concrete; the cell size in the model is optimized by numerical experiments. The results show that the computational efficiency of the model can be improved with a high calculation accuracy when the cell size of is 0.5 mm. Except for individual data, the model simulation results are in good agreement with the test results and finite element analysis results, and the maximum deviation is no more than 10%. The chloride ion concentration in the "V" crack is about 0.52 times that in the rectangular crack. The chloride ion concentration in curved cracks and broken line cracks is about 0.87 times and 0.89 times that in linear cracks, respectively. When the fracture deflection angle increases from 0° to 10°, 20°, and 30°, the chloride ion concentration at the fracture end decreases by 3.3%, 21.9%, and 29.8%, respectively. The influence range of the crack on the chloride diffusion zone around the crack is independent of the shape, distribution form, and deflection angle of the crack. The influenced area is mainly concentrated on the range of about 18 mm perpendicular to the crack.
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