Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs
This paper evaluated the structural behavior of shear-strengthened externally bonded FRCM composites. The additional shear strength of FRCM composites with three different types of textile grids (T1, T2, and T3) was analyzed for different crack patterns and failure modes. The influence of the intern...
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MDPI AG
2024-12-01
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| author | Min-Su Jo Hyeong-Gook Kim Dong-Hwan Kim Su-A Lim Hyun Kong Kil-Hee Kim |
| author_facet | Min-Su Jo Hyeong-Gook Kim Dong-Hwan Kim Su-A Lim Hyun Kong Kil-Hee Kim |
| author_sort | Min-Su Jo |
| collection | DOAJ |
| description | This paper evaluated the structural behavior of shear-strengthened externally bonded FRCM composites. The additional shear strength of FRCM composites with three different types of textile grids (T1, T2, and T3) was analyzed for different crack patterns and failure modes. The influence of the internal transverse reinforcement ratio (ρ<sub>w</sub>: 0.19%, 0.285%) and application method (SB: side bonding; UW: U-type wrapping) on the FRCM-strengthened beam was investigated. Furthermore, the interaction of FRCM composites with internal shear reinforcement was analyzed based on the strain distributions measured in the experiments. The experimental results showed that the failure modes (flexural, shear slippage, and shear debonding) changed depending on the type of textile grid applied. A reduction in shear reinforcement strain (interaction) due to FRCM strengthening was observed for all the strengthened beams, with differences depending on the shear reinforcement ratio and the type of textile grid. In addition, the ratio of the strain measured at the ultimate load to the strain of the textile grid in shear-failed reinforced beams was the lowest for the T3 grid, which had worse physical properties, and increased at lower shear reinforcement ratios. However, application methods (SB, UW) did not show significant differences. |
| format | Article |
| id | doaj-art-2fb40bfd904b40ada24b7e80a04fb6cd |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj-art-2fb40bfd904b40ada24b7e80a04fb6cd2025-08-20T02:55:44ZengMDPI AGBuildings2075-53092024-12-011412394910.3390/buildings14123949Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMsMin-Su Jo0Hyeong-Gook Kim1Dong-Hwan Kim2Su-A Lim3Hyun Kong4Kil-Hee Kim5Department of Architectural Engineering, Kongju National University, 1223-24 Cheonandaero, Seobuk, Cheonan 31080, Republic of KoreaDepartment of Architectural Engineering, Kongju National University, 1223-24 Cheonandaero, Seobuk, Cheonan 31080, Republic of KoreaDepartment of Architectural Engineering, Kongju National University, 1223-24 Cheonandaero, Seobuk, Cheonan 31080, Republic of KoreaDepartment of Architectural Engineering, Kongju National University, 1223-24 Cheonandaero, Seobuk, Cheonan 31080, Republic of KoreaDepartment of Architectural Engineering, Kongju National University, 1223-24 Cheonandaero, Seobuk, Cheonan 31080, Republic of KoreaDepartment of Architectural Engineering, Kongju National University, 1223-24 Cheonandaero, Seobuk, Cheonan 31080, Republic of KoreaThis paper evaluated the structural behavior of shear-strengthened externally bonded FRCM composites. The additional shear strength of FRCM composites with three different types of textile grids (T1, T2, and T3) was analyzed for different crack patterns and failure modes. The influence of the internal transverse reinforcement ratio (ρ<sub>w</sub>: 0.19%, 0.285%) and application method (SB: side bonding; UW: U-type wrapping) on the FRCM-strengthened beam was investigated. Furthermore, the interaction of FRCM composites with internal shear reinforcement was analyzed based on the strain distributions measured in the experiments. The experimental results showed that the failure modes (flexural, shear slippage, and shear debonding) changed depending on the type of textile grid applied. A reduction in shear reinforcement strain (interaction) due to FRCM strengthening was observed for all the strengthened beams, with differences depending on the shear reinforcement ratio and the type of textile grid. In addition, the ratio of the strain measured at the ultimate load to the strain of the textile grid in shear-failed reinforced beams was the lowest for the T3 grid, which had worse physical properties, and increased at lower shear reinforcement ratios. However, application methods (SB, UW) did not show significant differences.https://www.mdpi.com/2075-5309/14/12/3949FRCM compositetextile grid typeRC beamshear strengtheningstrainconfiguration method |
| spellingShingle | Min-Su Jo Hyeong-Gook Kim Dong-Hwan Kim Su-A Lim Hyun Kong Kil-Hee Kim Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs Buildings FRCM composite textile grid type RC beam shear strengthening strain configuration method |
| title | Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs |
| title_full | Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs |
| title_fullStr | Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs |
| title_full_unstemmed | Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs |
| title_short | Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs |
| title_sort | evaluation of behavior characteristics of reinforced concrete beam shear strengthening with different frcms |
| topic | FRCM composite textile grid type RC beam shear strengthening strain configuration method |
| url | https://www.mdpi.com/2075-5309/14/12/3949 |
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