Retrofitting reinforced concrete beams against shear failure using Carbon Fiber-Reinforced Plastics: Addressing the limitations of monolithic beam-slab systems
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Author |
Mu’tasim Abdel-Jaber, Khair Al-Deen Bsisu and Rawand Al-Nsour
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e-ISSN |
1819-6608 |
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On Pages
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497-501
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Volume No. |
20
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Issue No. |
9
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Issue Date |
July 15, 2025
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DOI |
https://doi.org/10.59018/052564
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Keywords |
carbon fiber-reinforced plastics, finite element analysis, concrete damage parameter.
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Abstract
The use of Carbon Fiber-Reinforced Plastics (CFRP) for retrofitting reinforced concrete (RC) beams against shear failure has gained significant attention due to its high strength-to-weight ratio and ease of application. However, current design codes and experimental studies often overlook the practical constraint imposed by monolithic beam-slab construction, where FRP wrapping can only be applied to a portion of the beam depth. This paper reviews the state-of-the-art in CFRP retrofitting, highlights the limitations of existing approaches in addressing monolithic systems, and presents findings from a finite element analysis (FEA) that investigates the shear behavior of partially wrapped beams. The results suggest that partial-depth CFRP application alters stress distributions and shear capacity, necessitating revisions to design guidelines. Recommendations for integrating these findings into practice are proposed.
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