Repair of reinforced concrete beams using carbon fiber reinforced polymer

Karzad, Abdul Saboor; Toubat, Salah Al; Maalej, Mohamed; Estephane, Pierre

doi:10.1051/matecconf/201712001008

Cited by 17 publications

(11 citation statements)

References 16 publications

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“…This phenomenon has also been reported by others [4,6,10]. However, debond of CFRP sheets from the strengthened beams due to high shear stress and occurrence of diagonal shear crack has been identified as the major problem for this strengthening system [10][11]. Bukhari et al [7] found that fiber orientation affects the ability of CFRP sheets to support shear forces.…”

Section: Introductionsupporting

confidence: 60%

“…Research reports on the application of fiberreinforced polymers began to be published in 1971 [1] and a large number of studies have been reported in recent years due to the need for new materials to retrofit structures, high-performance FRP materials and rapid development of FRP technology in the chemical industry [3][4][5][6][7][8][9][10][11][12]. Khalifa et al [3] showed that strengthening using CFRP sheets increased the shear capacity of reinforced concrete beams.…”

Section: Introductionmentioning

confidence: 99%

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Shear capacity of reinforced concrete beams strengthened with web side bonded CFRP sheets

2019

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The shear capacity of reinforced concrete beams strengthened with web side bonded carbon fiber-reinforced polymer (CFRP) sheets was measured experimentally. Nine reinforced concrete beams without stirrups; three control beams and six beams strengthened with minimal application of web side bonded CFRP sheets, were tested. The test variables were ratio of longitudinal reinforcement (1%, 1.4%, and 2.4%) and angle of application of CFRP sheets (450 and 900). The test results show that reinforced concrete beams strengthened with web side bonded CFRP sheets have higher shear capacity compared to the control beams. Shear capacity of strengthened beams with 450 angle of application of CFRP sheets is similar to that of beams strengthened with 900 angles. Beams with 1% of longitudinal reinforcement ratio failed in flexural mode indicated by concrete crushing in compression zone while beams with higher longitudinal reinforcement ratio (1.4% and 2.4%) failed in brittle mode as indicated by delamination of the concrete cover.

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Section: Introductionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Shear capacity of reinforced concrete beams strengthened with web side bonded CFRP sheets

2019

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“…O modelo mostrou uma maior precisão em comparação com os existentes na literatura. Karzad et al (2017Karzad et al ( , 2019 Foster et al (2016).…”

Section: Estudos Experimentais Usando Técnicas De Reforço Externa (Eb) E Nsm Ao Cisalhamento Com Prfunclassified

Estudo Do Uso De Materiais Alternativos Na Indústria Da Construção Civil Brasileira

Santos¹,

Oliveira²,

Lima³

et al. 2021

Coleção Desafios Das Engenharias: Engenharia Civil

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Direitos para esta edição cedidos à Atena Editora pelos autores. Open access publication by Atena Editora Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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“…encounter numerous shortcomings, e.g. problematic and slow application, and lack of durability [4]. A retrofitted beam with CFRP laminates can resist up to 170 % of the maximum load as compared to control beams [5].…”

Section: Introductionmentioning

confidence: 99%

Retrofitting of RC Beam Structure Member by using CFRP

Shah¹,

Li²,

Ayaz³

et al. 2020

IJEW

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The research has been lead relating the use of carbon fibre-reinforced polymer (CFRP) sheets in retrofitting and strengthening of the reinforced concrete member. The present research was conducted by using the epoxy to reinforced concrete beams retrofitted and strengthened for flexural strength by using CFRP sheet. The selected cross-section of the beam having 2400 mm length with 150 mm width and 225 mm height and the beam tension reinforcement on the bottom was set on 2#4bar@1.5" with the 38.1 mm clear cover was set to the main flexural reinforcement. The studied beam was focused on flexural behaviour. The experimental study has shown that while the using of CFRP with epoxy will improve the rigidity and durability of the concrete beam. Their great deformability greatly improves the seismic properties of the beam structures. Under the reinforced RC beams showed a very large deflection by control beam before their failure. By using CFRP externally the rigidity of retrofitted and strengthened beams can be improved.

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Repair of reinforced concrete beams using carbon fiber reinforced polymer

Cited by 17 publications

References 16 publications

Shear capacity of reinforced concrete beams strengthened with web side bonded CFRP sheets

Shear capacity of reinforced concrete beams strengthened with web side bonded CFRP sheets

Estudo Do Uso De Materiais Alternativos Na Indústria Da Construção Civil Brasileira

Retrofitting of RC Beam Structure Member by using CFRP

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