The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT)
Chloride-induced corrosion is one of the most critical factors affecting the durability of concrete structures, particularly in marine environments. Coral concrete, widely used in coastal and island construction, is especially vulnerable due to its porous microstructure. This study investigates the...
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525005315 |
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| author | Arafat Easin Jianzhao Ding Liang Xiao Guoxiong Mei |
| author_facet | Arafat Easin Jianzhao Ding Liang Xiao Guoxiong Mei |
| author_sort | Arafat Easin |
| collection | DOAJ |
| description | Chloride-induced corrosion is one of the most critical factors affecting the durability of concrete structures, particularly in marine environments. Coral concrete, widely used in coastal and island construction, is especially vulnerable due to its porous microstructure. This study investigates the chloride ion migration behavior in coral concrete treated with a Reactive Preservation Technique known as Reverse Seepage and Saturation-Based Active Anti-Corrosion Technology (RS-AAT). A combination of experimental testing and numerical simulation was conducted on coral concrete specimens with three different water-to-cement (w/c) ratios over a 120-day exposure period.Results showed that RS-AAT treatment reduced surface chloride ion concentration by over 15 % and decreased total chloride ion content by more than 40 % compared to untreated specimens. Under cyclic wet-dry corrosion conditions, RS-AAT also stabilized chloride concentration gradients, modified the migration pathways, and delayed chloride penetration. These effects were more pronounced in concrete with higher w/c ratios. Furthermore, treated specimens exhibited significantly improved resistance to chloride ingress, confirming the effectiveness of RS-AAT in enhancing the durability of coral concrete.These findings offer valuable insight into the development of sustainable concrete protection methods and contribute to extending the service life of coastal infrastructure exposed to aggressive saline environments. |
| format | Article |
| id | doaj-art-d96e0bb7f4594b32a7c8b1c91f623353 |
| institution | OA Journals |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-d96e0bb7f4594b32a7c8b1c91f6233532025-08-20T02:37:42ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0473310.1016/j.cscm.2025.e04733The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT)Arafat Easin0Jianzhao Ding1Liang Xiao2Guoxiong Mei3College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, PR China; Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR ChinaOcean College, Zhejiang University, Zhoushan 316021, PR China; Corresponding author.College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, PR China; Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR ChinaOcean College, Zhejiang University, Zhoushan 316021, PR China; College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, PR China; Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR China; Corresponding author at: Ocean College, Zhejiang University, Zhoushan 316021, PR China.Chloride-induced corrosion is one of the most critical factors affecting the durability of concrete structures, particularly in marine environments. Coral concrete, widely used in coastal and island construction, is especially vulnerable due to its porous microstructure. This study investigates the chloride ion migration behavior in coral concrete treated with a Reactive Preservation Technique known as Reverse Seepage and Saturation-Based Active Anti-Corrosion Technology (RS-AAT). A combination of experimental testing and numerical simulation was conducted on coral concrete specimens with three different water-to-cement (w/c) ratios over a 120-day exposure period.Results showed that RS-AAT treatment reduced surface chloride ion concentration by over 15 % and decreased total chloride ion content by more than 40 % compared to untreated specimens. Under cyclic wet-dry corrosion conditions, RS-AAT also stabilized chloride concentration gradients, modified the migration pathways, and delayed chloride penetration. These effects were more pronounced in concrete with higher w/c ratios. Furthermore, treated specimens exhibited significantly improved resistance to chloride ingress, confirming the effectiveness of RS-AAT in enhancing the durability of coral concrete.These findings offer valuable insight into the development of sustainable concrete protection methods and contribute to extending the service life of coastal infrastructure exposed to aggressive saline environments.http://www.sciencedirect.com/science/article/pii/S2214509525005315RS-AATReverse water pressureChloride ionCoral concreteConcrete durability |
| spellingShingle | Arafat Easin Jianzhao Ding Liang Xiao Guoxiong Mei The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT) Case Studies in Construction Materials RS-AAT Reverse water pressure Chloride ion Coral concrete Concrete durability |
| title | The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT) |
| title_full | The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT) |
| title_fullStr | The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT) |
| title_full_unstemmed | The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT) |
| title_short | The mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology (RS-AAT) |
| title_sort | mechanism of chloride ion transport in coral concrete by reverse seepage and saturation based active anti corrosion technology rs aat |
| topic | RS-AAT Reverse water pressure Chloride ion Coral concrete Concrete durability |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525005315 |
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