An experimental and numerical study of the effect of thickness and length of CFRP on performance of repaired reinforced concrete beams

Li, L.J.; Guo, Yong; Liu, F.; Bungey, J. H.

doi:10.1016/j.conbuildmat.2005.06.020

Cited by 74 publications

(44 citation statements)

References 13 publications

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“…The seismic retrofit strategy for an RC frame may include strengthening deficient members such as beams, columns and beam-column joints to increase strength, stiffness and/or ductility and to enhance the overall seismic performance of the frame by increasing lateral strength, reducing drift and/or increasing ductility. In the last decade, a vast amount of research has been carried out on the FRP retrofit of RC frame members, such as beams [1][2][3][4][5][6][7] and columns [7][8][9][10][11][12] including brittle debonding failure and the methods to overcome these problems [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of ordinary RC frames retrofitted at joints by FRP sheets

Niroomandi

Maheri

et al. 2010

Engineering Structures

111

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Section: Introductionmentioning

confidence: 99%

Seismic performance of ordinary RC frames retrofitted at joints by FRP sheets

Niroomandi

Maheri

et al. 2010

Engineering Structures

111

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“…These phenomena may lead to degradation of fibres and resin, thereby compromising the composite adhesion. Li et al (2006) point out that in terms of mechanical behaviour, the effectiveness of the method is closely related to the debonding possibility between the composite system layers. Toutanji and Ortiz (1997) comment that the epoxy resin type employed may be a critical factor for the durability of reinforced structural elements, especially beams.…”

Section: Introductionmentioning

confidence: 98%

Influence of epoxy type in concrete beams strengthened with fibre-reinforced polymer

Andrade¹

2013

Proceedings of the Institution of Civil Engineers - Structures

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Associate Professor, Civil and Production Engineering Departments, Pontifical Catholic University of Rio Grande do Sul (PUCRS), BrazilAn evaluation to verify the effect of the epoxy resin type in the durability of reinforced concrete beams strengthened with carbon-fibre-reinforced polymer was performed in order to assess which is more efficient. The performance of these specimens was assessed by evaluating the flexural capacity and load-deflection relationships of the beams after placing them in different environments, directly or indirectly, with simulated field conditions for a specified period of time. The specimens were exposed to four environmental conditions: a controlled laboratory environment, outside environment (direct exposure to field conditions), wet-dry in normal water environment and wet-dry saline (sodium chloride) water environment. The specimens of different wet-dry environments were exposed to a time cycle of 2 weeks inside the solution and 2 weeks outside the solution. The tests were carried out after 4 and 6 months of exposure to different environmental conditions. An analysis of variance was performed with the results of the beam's rupture tests in order to assess the influence of the exposure conditions and the epoxy resin type in the beam's rupture load.

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“…In recent years, extensive research has established the effectiveness of strengthening and repair of existing RC structural members with externally bonded fiber-reinforced polymer composites. The FRP retrofit of RC frame members such as beams [Li et al, 2002[Li et al, , 2006Rougier and Luccioni, 2007], columns [Binici and Mosalam, 2007;Ozcan et al, 2008;Promis et al, 2009;Rougier and Luccioni, 2007], and joints [Alhaddad et al, 2012;Mahini and Ronagh, 2010] indicated the effectiveness of the retrofitting technique. Research also highlighted problems associated with the technique such as brittle debonding failure and the methods used to overcome these problems [Gravina et al, 2013;Kalfat et al, 2013].…”

Section: Introductionmentioning

confidence: 99%

Seismic Behavior of FRP-Retrofitted Reinforced Concrete Frames

Hadigheh

Mahini

Maheri

2014

Journal of Earthquake Engineering

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Although a significant number of studies have been conducted on the behavior of the reinforced concrete beam-column joints retrofitted with FRP materials, limited investigation considered the overall seismic behavior of the retrofitted frames. In this article, experimental and numerical studies are performed on a scaled-down eight-story and two full scaled low-rise ordinary moment resisting frames (OMRFs) retrofitted with FRP at the joints. Additional, rotational stiffness of the joints is implemented into pushover models to predict seismic performance and behavior factor of the retrofitted frames. Results indicate that FRP retrofitting is more effective than steel braces for low-and medium-rise OMRFs.

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An experimental and numerical study of the effect of thickness and length of CFRP on performance of repaired reinforced concrete beams

Cited by 74 publications

References 13 publications

Seismic performance of ordinary RC frames retrofitted at joints by FRP sheets

Seismic performance of ordinary RC frames retrofitted at joints by FRP sheets

Influence of epoxy type in concrete beams strengthened with fibre-reinforced polymer

Seismic Behavior of FRP-Retrofitted Reinforced Concrete Frames

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