Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions
This study performed accelerated corrosion tests on reinforced concrete (RC) specimens reinforced with transverse steel bars to evaluate the concrete cracking and rebar strain behaviors caused by rebar corrosion. Seven RC specimens were created with variable compressive strengths, rebar diameters, a...
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| Format: | Article |
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MDPI AG
2020-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/5/1794 |
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| author | Gyeongcheol Choe Yasuji Shinohara Gyuyong Kim Sangkyu Lee Euibae Lee Jeongsoo Nam |
| author_facet | Gyeongcheol Choe Yasuji Shinohara Gyuyong Kim Sangkyu Lee Euibae Lee Jeongsoo Nam |
| author_sort | Gyeongcheol Choe |
| collection | DOAJ |
| description | This study performed accelerated corrosion tests on reinforced concrete (RC) specimens reinforced with transverse steel bars to evaluate the concrete cracking and rebar strain behaviors caused by rebar corrosion. Seven RC specimens were created with variable compressive strengths, rebar diameters, and concrete cover thicknesses. To mimic in-situ conditions, the accelerated corrosion tests applied a current to the longitudinal bar and transverse bar for different periods of time to create an unbalanced chloride ion distribution. These tests evaluated the amount of rebar corrosion, corrosion cracking properties, and transverse bar strain behavior. The corrosion rate of the transverse bar was faster than that of the longitudinal bar, and cracking first occurred in the concreate around the transverse bar in the specimens with low concrete compressive strength and thin concrete cover. Corrosion cracking and rebar strain were greatly affected by the behavior of the corrosion products that resulted from the pore volume and cracking properties of the cement paste. |
| first_indexed | 2024-12-19T03:01:33Z |
| format | Article |
| id | doaj.art-7b90d8e4b3da4db08e01890e57d22471 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-19T03:01:33Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-7b90d8e4b3da4db08e01890e57d224712022-12-21T20:38:12ZengMDPI AGApplied Sciences2076-34172020-03-01105179410.3390/app10051794app10051794Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine ConditionsGyeongcheol Choe0Yasuji Shinohara1Gyuyong Kim2Sangkyu Lee3Euibae Lee4Jeongsoo Nam5Department of Architectural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, KoreaLaboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, Yokohama 226-8503, JapanDepartment of Architectural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, KoreaDepartment of Architectural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, KoreaDaewoo Institute of Construction Technology, Daewoo E&C, 20, Suil-ro 123boen-gil, Suwon-si 16297, KoreaDepartment of Architectural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, KoreaThis study performed accelerated corrosion tests on reinforced concrete (RC) specimens reinforced with transverse steel bars to evaluate the concrete cracking and rebar strain behaviors caused by rebar corrosion. Seven RC specimens were created with variable compressive strengths, rebar diameters, and concrete cover thicknesses. To mimic in-situ conditions, the accelerated corrosion tests applied a current to the longitudinal bar and transverse bar for different periods of time to create an unbalanced chloride ion distribution. These tests evaluated the amount of rebar corrosion, corrosion cracking properties, and transverse bar strain behavior. The corrosion rate of the transverse bar was faster than that of the longitudinal bar, and cracking first occurred in the concreate around the transverse bar in the specimens with low concrete compressive strength and thin concrete cover. Corrosion cracking and rebar strain were greatly affected by the behavior of the corrosion products that resulted from the pore volume and cracking properties of the cement paste.https://www.mdpi.com/2076-3417/10/5/1794reinforced concretecorrosion cracktransverse barmarine conditions |
| spellingShingle | Gyeongcheol Choe Yasuji Shinohara Gyuyong Kim Sangkyu Lee Euibae Lee Jeongsoo Nam Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions Applied Sciences reinforced concrete corrosion crack transverse bar marine conditions |
| title | Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions |
| title_full | Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions |
| title_fullStr | Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions |
| title_full_unstemmed | Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions |
| title_short | Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions |
| title_sort | concrete corrosion cracking and transverse bar strain behavior in a reinforced concrete column under simulated marine conditions |
| topic | reinforced concrete corrosion crack transverse bar marine conditions |
| url | https://www.mdpi.com/2076-3417/10/5/1794 |
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