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Chloride Diffusion Properties of Cement Mortar Under Salt Spray Wetting-Drying Cycle
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Qiang YUAN1, 2, Yuman WANG1, 2, Kai ZHANG1, 2, Jiajia ZHANG3, Huiming RAO4, Qiqiang CHEN4, Feng ZHANG5, Zhipeng ZHANG4
Journal of the Chinese Ceramic Society | 2023, 51(11) : 2805 - 2813
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Journal of the Chinese Ceramic Society | 2023, 51(11): 2805-2813
• Research Articles •
Chloride Diffusion Properties of Cement Mortar Under Salt Spray Wetting-Drying Cycle
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Qiang YUAN1, 2, Yuman WANG1, 2, Kai ZHANG1, 2, Jiajia ZHANG3, Huiming RAO4, Qiqiang CHEN4, Feng ZHANG5, Zhipeng ZHANG4
Affiliations
  • 1.School of Civil Engineering, Central South University, Changsha 410075, China
  • 2.National Engineering Research Center of High-speed Railway Construction Technology, Changsha 410075, China
  • 3.Shandong CSCEC Urban Development Co., Ltd, Jinan 250014, China
  • 4.Southeast Coastal Railway Fujian Co. Ltd., Fuzhou 350013, China
  • 5.China Railway Nanchang Group Co., Ltd., Nanchang 330103, China

    • YUAN Qiang (1981-), male, Ph.D., Professor. E-mail:

About Author:

YUAN Qiang (1981-), male, Ph.D., Professor. E-mail:

Published: 2023-09-28 doi: 10.14062/j.issn.0454-5648.20230550
Outline
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The deterioration of the durability of marine concrete and the degree of corrosion of internal steel bars in the tidal, splash and atmospheric zones are often serious in salt spray wetting and drying cycle. The diffusion of chloride in cement-based materials was investigated at different parameters (i.e., mix ratio, dry-wet ratio, and exposure time) by a cycle test of salt spray wetting and drying and a test method of layered grinding and potentiometric titration. The results show that the deposition and transport of chloride ions in mortar are primarily affected by salt spray wetting-drying cycle, dry-wet ratio, water-binder ratio, and exposure period. The influence of water-binder ratio is dominant, while the influence of dry-wet ratio is slight. The maximum concentration of chloride Cmax and the effective chloride diffusion coefficient Deff increase as water-binder ratio improves. Cmax firstly increases and subsequently declines as fly ash amount and frequency of dry-wet cycles increase. Deff decreases as exposure time increases. Deff firstly increases and subsequently reduces as fly ash content increases. Low water-binder ratio and use of fly ash can effectively postpone chloride erosion, thereby enhancing the durability of structures.

offshore  /  wet-dry cycle  /  chloride transport  /  effective diffusion coefficient  /  durability
元强, 王玉曼, 张凯, 张嘉嘉, 饶惠明, 陈其强, 张锋, 张志鹏. 盐雾湿润-干燥循环作用下水泥砂浆氯离子扩散特性. 硅酸盐学报, 2023 , 51 (11) : 2805 -2813 . DOI: 10.14062/j.issn.0454-5648.20230550
Qiang YUAN, Yuman WANG, Kai ZHANG, Jiajia ZHANG, Huiming RAO, Qiqiang CHEN, Feng ZHANG, Zhipeng ZHANG. Chloride Diffusion Properties of Cement Mortar Under Salt Spray Wetting-Drying Cycle[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (11) : 2805 -2813 . DOI: 10.14062/j.issn.0454-5648.20230550
Appendix
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Year 2023 volume 51 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20230550
  • Receive Date：2023-07-28
  • Online Date：2026-10-19
  • Published：2023-09-28
Article Data
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History
  • Received：2023-07-28
  • Revised：2023-08-24
Funding
Affiliations
    1.School of Civil Engineering, Central South University, Changsha 410075, China
    2.National Engineering Research Center of High-speed Railway Construction Technology, Changsha 410075, China
    3.Shandong CSCEC Urban Development Co., Ltd, Jinan 250014, China
    4.Southeast Coastal Railway Fujian Co. Ltd., Fuzhou 350013, China
    5.China Railway Nanchang Group Co., Ltd., Nanchang 330103, China
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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
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Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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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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