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Corrosion State of Reinforcing Steel in Composite Binder Mortar in Chloride Environment
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Chuang LI, Yingfang FAN, Yaoyu WANG, Qiuchao LI
Journal of the Chinese Ceramic Society | 2021, 49(8) : 1642 - 1649
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Journal of the Chinese Ceramic Society | 2021, 49(8): 1642-1649
• Research Article •
Corrosion State of Reinforcing Steel in Composite Binder Mortar in Chloride Environment
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Chuang LI, Yingfang FAN, Yaoyu WANG, Qiuchao LI
Affiliations
  • College of Transportation Engineering, Dalian Maritime University, Dalian 116026, Liaoning, China

    • LI Chuang (1987-), male, Doctoral candidate. E-mail:

About Author:

LI Chuang (1987-), male, Doctoral candidate. E-mail:

Published: 2021-08-20 doi: 10.14062/j.issn.0454-5648.20200894
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The corrosion state of composite binder mortar with metakaolin (MK) in chloride environment was investigated by measuring corrosion potential, linear polarization and cyclic potentiodynamic polarization. The relationships among different electrochemical parameters were analyzed. In chloride environment, the corrosion potential of the reinforcing steel in the composite binder mortar increases, the corrosion rate decreases and the pitting corrosion resistance enhances with increasing the MK content as the MK content is < 30% (accounting for total mass of MK and cement). The corrosion current density and corrosion potential are correlated to composite binder mortar. The degree of pitting corrosion of the reinforcing steel in the composite binder mortar is well reflected by main electrochemical parameters of cyclic potentiodynamic polarization. The presence of MK modifies the pore structure and reduces the permeability coefficient of the chloride in the composite binder mortar. The depassivation time of the reinforcing steel and the expected cracking time of reinforcing steel cover both are prolonged when the composite binder mortar is added.

chloride environment  /  mortar  /  metakaolin  /  reinforcing steel  /  corrosion
李闯, 范颖芳, 王耀宇, 李秋超. 氯盐环境下复合胶凝材料砂浆中钢筋锈蚀状态. 硅酸盐学报, 2021 , 49 (8) : 1642 -1649 . DOI: 10.14062/j.issn.0454-5648.20200894
Chuang LI, Yingfang FAN, Yaoyu WANG, Qiuchao LI. Corrosion State of Reinforcing Steel in Composite Binder Mortar in Chloride Environment[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (8) : 1642 -1649 . DOI: 10.14062/j.issn.0454-5648.20200894
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Year 2021 volume 49 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20200894
  • Receive Date：2020-11-30
  • Online Date：2026-10-30
  • Published：2021-08-20
Article Data
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History
  • Received：2020-11-30
  • Revised：2021-01-22
Funding
Affiliations
    College of Transportation Engineering, Dalian Maritime University, Dalian 116026, Liaoning, China

Corresponding:

FAN Yingfang (1972-), female, Ph. D., Professor. E-mail:
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Citations
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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