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Corrosion Behavior of Steel in Cement-Bagasse Ash-Slag Sea-Sand Mortar
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Yaohong MO1, Jianhui LIU1, Leping LIU3, Zheng CHEN1, Caijun SHI2
Journal of the Chinese Ceramic Society | 2023, 51(11) : 2792 - 2804
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Journal of the Chinese Ceramic Society | 2023, 51(11): 2792-2804
• Research Articles •
Corrosion Behavior of Steel in Cement-Bagasse Ash-Slag Sea-Sand Mortar
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Yaohong MO1, Jianhui LIU1, Leping LIU3, Zheng CHEN1, Caijun SHI2
Affiliations
  • 1.College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
  • 2.College of Civil Engineering, Hunan University, Changsha 410082, China
  • 3.College of Chemistry and Materials, Nanning Normal University, Nanning 530001, China

    • MO Yaohong (1997-), male, Master candidate. E-mail:

About Author:

MO Yaohong (1997-), male, Master candidate. E-mail:

Published: 2023-09-28 doi: 10.14062/j.issn.0454-5648.20230305
Outline
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Effect of cement mixture containing bagasse ash (SCBA) and slag (BFS) on the corrosion properties of steel in sea-sand mortar was investigated. The electrochemical impedance spectra, open circuit potential, and corrosion current density of steel were determined, and the chloride ions content, pH value and hydration products were measured. The results show that an increase in bagasse ash content leads to an increase in the corrosion rate of steel and [Cl-]/[OH-] value. However, an increase in slag content can reduce the corrosion rate of steel, and cause that the [Cl-]/[OH-] value initially increases and slightly decreases after 28 d. The addition of 15% bagasse ash and 15% slag has a positive synergistic effect, effectively increasing the resistance of mortar protective layer and charge transfer resistance, improving the stability of the passivation film, and reducing the corrosion rate of steel in the mortar by 31.86%, compared to the reference group. The optimum corrosion resistance of the steel can be obtained. It is indicated that the use of a cement mixture containing bagasse ash and slag can effectively improve the corrosion resistance of steel in sea-sand mortar.

bagasse ash  /  slag  /  sea-sand  /  chloride binding  /  steel corrosion
莫耀鸿, 刘剑辉, 刘乐平, 陈正, 史才军. 钢筋在水泥-蔗渣灰-矿粉海砂砂浆中的腐蚀行为. 硅酸盐学报, 2023 , 51 (11) : 2792 -2804 . DOI: 10.14062/j.issn.0454-5648.20230305
Yaohong MO, Jianhui LIU, Leping LIU, Zheng CHEN, Caijun SHI. Corrosion Behavior of Steel in Cement-Bagasse Ash-Slag Sea-Sand Mortar[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (11) : 2792 -2804 . DOI: 10.14062/j.issn.0454-5648.20230305
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Year 2023 volume 51 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20230305
  • Receive Date：2023-05-07
  • Online Date：2026-10-19
  • Published：2023-09-28
Article Data
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History
  • Received：2023-05-07
  • Revised：2023-06-25
Funding
Affiliations
    1.College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
    2.College of Civil Engineering, Hunan University, Changsha 410082, China
    3.College of Chemistry and Materials, Nanning Normal University, Nanning 530001, 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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