Shear strengthening of reinforced concrete T-beams with anchored and non-anchored CFRP fabrics

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dc.contributor.authorYazman, Sakir
dc.contributor.authorAksoylu, Ceyhun
dc.contributor.authorGemi, Lokman
dc.contributor.authorArslan, Musa Hakan
dc.contributor.authorHamad, Ahmed Abed
dc.contributor.authorOzkilic, Yasin Onuralp
dc.date.accessioned2024-02-23T14:12:27Z
dc.date.available2024-02-23T14:12:27Z
dc.date.issued2022
dc.departmentNEÜen_US
dc.description.abstractStrengthening of shear deficient T-beams is not as easy as rectangular beams due to the presence of slabs. In this study, externally bonded reinforcement (EBR) such type of reinforced concrete shear deficient T-beams with and without anchorage in different CFRP configurations was experimentally and analytically investigated. Pursuant to this goal, nine half-scale T-beams were produced and tested with monotonic loading under four points. Seven of these T-beams are strengthened with partial CFRP strip and one is strengthened with full CFRP wrapped in the shear span. The failures of strengthened beams are initiated with the debonding failure of FRP sheets followed by brittle shear failure. In order to prevent this failure, two specimens with partial CFRP strip are fixed to the beam by using anchors at different angles of 45 and 90. The experimental results indicated that the contribution of EBR to the shear capacity is significant and depends on different variables such as anchorage angle, strengthening type. Moreover, the strengthening method that gives the most effective results in strengthening T-beams are full wrapping CFRP and partial CFRP with a 45-degree anchorage type. The anchorage application increased the shear capacity by 42.6%-53.8% compared to the reference specimens. In addition, the anchors with angle of 45 increased stiffness by 37%. In terms of ductility, the best result was given by the type of strengthening where the slabs were broken and the beam was completely wrapped. This method contributed 42%-80% more to ductility than other methods. The obtained experimental results were also compared with the empirical correlations given by ACI 440.2R-17, TBEC-2019 and FIB-2010 and recommendations are given. Especially in fully wrapped beams, the estimation of ACI was determined to be 96%. The estimations of the other codes are far from meeting the experimental results; therefore, essential improvements should be applied to the codes, especially with regard to CFRP deformation and approaches for anchored connections.en_US
dc.description.sponsorshipKonya Technical University Scientific Research Projects Coordination Unit [:201004038]; Konya Technical Universityen_US
dc.description.sponsorshipAcknowledgements This study was supported by Konya Technical University Scientific Research Projects Coordination Unit (Project Number:201004038) . Authors also would like to thank Konya Technical University for their financial support.en_US
dc.identifier.doi10.1016/j.istruc.2022.03.046
dc.identifier.endpage542en_US
dc.identifier.issn2352-0124
dc.identifier.scopus2-s2.0-85126947454en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage527en_US
dc.identifier.urihttps://doi.org/10.1016/j.istruc.2022.03.046
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12053
dc.identifier.volume39en_US
dc.identifier.wosWOS:000788144900001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Incen_US
dc.relation.ispartofStructuresen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCfrpen_US
dc.subjectReinforced Concrete T-Beamsen_US
dc.subjectStrengtheningen_US
dc.subjectAnalytical Analysisen_US
dc.subjectAnchorageen_US
dc.subjectBuilding Codesen_US
dc.subjectDamage Analysisen_US
dc.titleShear strengthening of reinforced concrete T-beams with anchored and non-anchored CFRP fabricsen_US
dc.typeArticleen_US

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