Behavior of Hybrid FRP Strengthened RC Column Under Axial Compression

Recently, there has been a growing interest in using Fiber reinforced cementitious matrix (FRCM) technology due to its ease of application and effectiveness in rehabilitating reinforced concrete (RC) elements. However, increasing the number of FRCM layers has not consistently improved strength and d...

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Bibliographic Details
Published in:Iranian journal of science and technology. Transactions of civil engineering 2024-08, Vol.48 (4), p.1933-1945
Main Authors: R, Vivekanandan, K, Aarthi
Format: Article
Language:English
Subjects:
Civil Engineering
Engineering
Research Paper
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Summary:Recently, there has been a growing interest in using Fiber reinforced cementitious matrix (FRCM) technology due to its ease of application and effectiveness in rehabilitating reinforced concrete (RC) elements. However, increasing the number of FRCM layers has not consistently improved strength and ductility, often resulting in premature Fiber slippage-related failures. This study examines RC circular columns strengthened with a hybrid approach combining FRCM and externally bonded FRP (EB-FRP) to overcome the limitations of FRCM alone. Two sets of each seven columns were cast, with one serving as a control and six undergoing strengthening using glass and carbon FRP materials. The main goal is to evaluate the hybrid FRCM/EB-FRP method’s effectiveness, enhance deformation characteristics, prevent Fiber slippage, and reduce the need for multiple FRCM layers. The study includes discussions on axial load-bearing capacity, load versus deformation Behavior, and failure patterns. The results reveal that Hybrid FRP-strengthened RC columns demonstrated increased capacity, improved column confinement, and enhanced ductility.
ISSN:2228-6160
2364-1843
DOI:10.1007/s40996-023-01325-1