Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beams
This paper will present the shear behavior of the corroded stirrups reinforced concrete (RC) beams strengthened with textile reinforced concrete (TRC). The shear resistance contributions from the corroded RC beams and carbon TRC at various volume ratios were carefully examined. Eighteen beams were t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221450952200064X |
| _version_ | 1828516434346508288 |
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| author | Dang Quang Ngo Huy Cuong Nguyen Huu Tai Dinh Duy Tien Nguyen Dinh Loc Mai |
| author_facet | Dang Quang Ngo Huy Cuong Nguyen Huu Tai Dinh Duy Tien Nguyen Dinh Loc Mai |
| author_sort | Dang Quang Ngo |
| collection | DOAJ |
| description | This paper will present the shear behavior of the corroded stirrups reinforced concrete (RC) beams strengthened with textile reinforced concrete (TRC). The shear resistance contributions from the corroded RC beams and carbon TRC at various volume ratios were carefully examined. Eighteen beams were tested, including twelve subjected by an electrochemically accelerated aging technique for 60 and 90 days to obtain the theoretical mass loss in their stirrups of 10% and 20%, respectively. The stirrups were locally corroded in the shear span. After the corrosion accelerating treatment, corrosion cracks on concrete surfaces were marked, and their widths were measured to observe their distributions. A three-point bending test was applied to obtain the shear performances of the corroded beams subjected to the monotonic and repeated loading. Eight corroded RC beams were strengthened using 2 and 3 U-wrap layers of bidirectional carbon textile. The shear behavior will be discussed, including the ultimate capacity, failure mode, load-deflection, load–strain relationship, and crack distributions. Compared to the controlled specimens, the averaged shear strength of corroded specimens decreased by 16.08% and 25.34%, corresponding to the degree of corrosion ranging from 12.3% to 23.6%. The experimental results also demonstrate that the shear capacities of the corroded RC beams strengthened with carbon TRC had been improved 60.6% compared to the severely corroded controlled specimens. |
| first_indexed | 2024-12-11T18:27:52Z |
| format | Article |
| id | doaj.art-6a2b4aba85e94269ad5213a776605785 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-11T18:27:52Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-6a2b4aba85e94269ad5213a7766057852022-12-22T00:55:01ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e00932Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beamsDang Quang Ngo0Huy Cuong Nguyen1Huu Tai Dinh2Duy Tien Nguyen3Dinh Loc Mai4University of Transport and Communications, No.3 Cau Giay street, Hanoi, Viet NamCorresponding author.; University of Transport and Communications, No.3 Cau Giay street, Hanoi, Viet NamUniversity of Transport and Communications, No.3 Cau Giay street, Hanoi, Viet NamUniversity of Transport and Communications, No.3 Cau Giay street, Hanoi, Viet NamUniversity of Transport and Communications, No.3 Cau Giay street, Hanoi, Viet NamThis paper will present the shear behavior of the corroded stirrups reinforced concrete (RC) beams strengthened with textile reinforced concrete (TRC). The shear resistance contributions from the corroded RC beams and carbon TRC at various volume ratios were carefully examined. Eighteen beams were tested, including twelve subjected by an electrochemically accelerated aging technique for 60 and 90 days to obtain the theoretical mass loss in their stirrups of 10% and 20%, respectively. The stirrups were locally corroded in the shear span. After the corrosion accelerating treatment, corrosion cracks on concrete surfaces were marked, and their widths were measured to observe their distributions. A three-point bending test was applied to obtain the shear performances of the corroded beams subjected to the monotonic and repeated loading. Eight corroded RC beams were strengthened using 2 and 3 U-wrap layers of bidirectional carbon textile. The shear behavior will be discussed, including the ultimate capacity, failure mode, load-deflection, load–strain relationship, and crack distributions. Compared to the controlled specimens, the averaged shear strength of corroded specimens decreased by 16.08% and 25.34%, corresponding to the degree of corrosion ranging from 12.3% to 23.6%. The experimental results also demonstrate that the shear capacities of the corroded RC beams strengthened with carbon TRC had been improved 60.6% compared to the severely corroded controlled specimens.http://www.sciencedirect.com/science/article/pii/S221450952200064XShear strengtheningCorrosionTextile-reinforced concreteRepeated load |
| spellingShingle | Dang Quang Ngo Huy Cuong Nguyen Huu Tai Dinh Duy Tien Nguyen Dinh Loc Mai Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beams Case Studies in Construction Materials Shear strengthening Corrosion Textile-reinforced concrete Repeated load |
| title | Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beams |
| title_full | Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beams |
| title_fullStr | Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beams |
| title_full_unstemmed | Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beams |
| title_short | Effectiveness of carbon textile reinforced concrete in shear strengthening short-span corroded reinforced concrete beams |
| title_sort | effectiveness of carbon textile reinforced concrete in shear strengthening short span corroded reinforced concrete beams |
| topic | Shear strengthening Corrosion Textile-reinforced concrete Repeated load |
| url | http://www.sciencedirect.com/science/article/pii/S221450952200064X |
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