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Passivation Behavior of Steel Bar in Ultra-High Performance Concrete under Coupling Effect of Different Internal Chloride Salts
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Wei HUANG1, Zhendong CHEN1, Rong CHEN1, Fengze YING1, Qingwei HUANG1, Sheng LIU2, Yanhua PAN2
Journal of the Chinese Ceramic Society | 2023, 51(8) : 1928 - 1937
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Journal of the Chinese Ceramic Society | 2023, 51(8): 1928-1937
• Research Articles •
Passivation Behavior of Steel Bar in Ultra-High Performance Concrete under Coupling Effect of Different Internal Chloride Salts
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Wei HUANG1, Zhendong CHEN1, Rong CHEN1, Fengze YING1, Qingwei HUANG1, Sheng LIU2, Yanhua PAN2
Affiliations
  • 1.College of Civil Engineering, Fuzhou University, Fuzhou 350116, China
  • 2.Fuzhou Building Research Institute Co. Ltd, Fuzhou 350003, China

    • HUANG Wei (1987-), male, Ph.D., Assistant Professor. E-mail:

About Author:

HUANG Wei (1987-), male, Ph.D., Assistant Professor. E-mail:

Published: 2023-04-28 doi: 10.14062/j.issn.0454-5648.20220774
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Ultra-high performance concrete (UHPC) was prepared via mixing water containing different chloride salts (i.e., NaCl, CaCl2 and MgCl2). The electrochemical indexes of the internal reinforcement during passivation period were measured by linear polarization, electrochemical impedance spectroscopy and cyclic polarization. The passivation behavior and evolution of steel bars in UHPC under the coupling action of different chloride salts were investigated. The results show that the reinforcement in UHPC is able to be passivated under three different chloride salt systems. The resistances of UHPC matrix, steel passivation film and steel charge transfer increase continuously with the hydration age. At the same concentration of Cl- ions, the introduction of Ca salts increases the possibility of steel corrosion to a certain extent, while the introduction of Mg salts delays the corrosion process of steel bars to some extent. The pitting corrosion sensitivity of reinforcement increases with the increment of Cl- ions concentration. At a high Cl- ions concentration, the pitting sensitivity of steel bars in Na-Ca system is greater than that in Na-Mg system.

ultra-high performance concrete  /  chloride salt  /  steel bar  /  linear polarization  /  electrochemical impedance spectroscopy  /  cyclic polarization  /  passivation behavior
黄伟, 陈镇东, 陈荣, 应丰泽, 黄卿维, 刘升, 潘岩华. 不同内掺氯盐耦合作用下超高性能混凝土中钢筋的电化学行为. 硅酸盐学报, 2023 , 51 (8) : 1928 -1937 . DOI: 10.14062/j.issn.0454-5648.20220774
Wei HUANG, Zhendong CHEN, Rong CHEN, Fengze YING, Qingwei HUANG, Sheng LIU, Yanhua PAN. Passivation Behavior of Steel Bar in Ultra-High Performance Concrete under Coupling Effect of Different Internal Chloride Salts[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (8) : 1928 -1937 . DOI: 10.14062/j.issn.0454-5648.20220774
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Year 2023 volume 51 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20220774
  • Receive Date：2022-09-20
  • Online Date：2026-10-19
  • Published：2023-04-28
Article Data
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History
  • Received：2022-09-20
  • Revised：2022-11-22
Funding
Affiliations
    1.College of Civil Engineering, Fuzhou University, Fuzhou 350116, China
    2.Fuzhou Building Research Institute Co. Ltd, Fuzhou 350003, China

Corresponding:

HUANG Qingwei (1982-), male, Ph.D., Associate Professor. E-mail:
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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
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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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