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Migration of Chloride Ions in Cement-based Materials in Carbonic Acid Solution Environment
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Junfeng WEI1, Leping LIU2, Jianhui LIU1, Zheng CHEN1, Shuqing ZHANG1, Mingtao LI1, Chuangling LAI1, Caijun SHI3
Journal of the Chinese Ceramic Society | 2023, 51(11) : 2942 - 2954
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Journal of the Chinese Ceramic Society | 2023, 51(11): 2942-2954
• Research Articles •
Migration of Chloride Ions in Cement-based Materials in Carbonic Acid Solution Environment
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Junfeng WEI1, Leping LIU2, Jianhui LIU1, Zheng CHEN1, Shuqing ZHANG1, Mingtao LI1, Chuangling LAI1, Caijun SHI3
Affiliations
  • 1.College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
  • 2.College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
  • 3.College of Civil Engineering, Hunan University, Changsha 410082, China

    • WEI Junfeng (1997-), male, Master candidate. E-mail:

About Author:

WEI Junfeng (1997-), male, Master candidate. E-mail:

Published: 2023-09-21 doi: 10.14062/j.issn.0454-5648.20230229
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When the groundwater contains a high concentration of carbonate and chloride ions, the corrosion of carbonic acid solution on underground concrete structures will lead to a faster migration of chloride ions in concrete. Migration characteristic of chloride ions in mortar exists in carbonic acid solution environment. The corrosion products and microstructure of paste under the attack of carbonic acid solution and chloride ions were analyzed by X-ray diffraction (XRD), thermogravimetric analysis (TG-DTG) and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). The results show that in the early stage of carbonic acid water corrosion, calcium hydroxide and C-S-H gel decalcifies to form calcium carbonate filling the pore structure of the mortar, and inhibits the migration of chloride ions in the mortar. At the later stage of corrosion, the dissolution of calcium carbonate and the conversion of C-S-H gel with a low calcium-silicon ratio into amorphous silica gel lead to the increase of mortar porosity and the acceleration of chloride ion migration in mortar. Carbonic acid water corrosion results in the decomposition of Friedel's salts and the decrease of the adsorption capacity of C-S-H gel for chloride ions. Reducing water-cement ratio can increase the corrosion resistance of mortar to carbonic acid water and reduce the migration rate of chloride ions.

carbonic acid solution  /  chloride ion migration  /  chloride binding  /  water-cement ratio
韦峻峰, 刘乐平, 刘剑辉, 陈正, 张树青, 李明韬, 赖创林, 史才军. 碳酸水溶液环境里氯离子在水泥基材料中的迁移. 硅酸盐学报, 2023 , 51 (11) : 2942 -2954 . DOI: 10.14062/j.issn.0454-5648.20230229
Junfeng WEI, Leping LIU, Jianhui LIU, Zheng CHEN, Shuqing ZHANG, Mingtao LI, Chuangling LAI, Caijun SHI. Migration of Chloride Ions in Cement-based Materials in Carbonic Acid Solution Environment[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (11) : 2942 -2954 . DOI: 10.14062/j.issn.0454-5648.20230229
Appendix
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Year 2023 volume 51 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20230229
  • Receive Date：2023-04-08
  • Online Date：2026-10-19
  • Published：2023-09-21
Article Data
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History
  • Received：2023-04-08
  • Revised：2023-05-06
Funding
Affiliations
    1.College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
    2.College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China
    3.College of Civil Engineering, Hunan University, Changsha 410082, China

Corresponding:

SHI Caijun (1963-), male, Ph.D., Professor. E-mail:
LIU Jianhui (1992-), male, Ph.D., Associate Professor.
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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