Load-Deflection Behavior of Over- and Under-Reinforced Concrete Beams with Hybrid FRP-Steel Reinforcements

dc.authoridDobiszewska, Magdalena/0000-0003-0125-5219
dc.authoridKARTAL, SARUHAN/0000-0002-1870-3287
dc.authoridKalkan, Ilker/0000-0002-5987-631X
dc.contributor.authorKartal, Saruhan
dc.contributor.authorKalkan, Ilker
dc.contributor.authorBeycioglu, Ahmet
dc.contributor.authorDobiszewska, Magdalena
dc.date.accessioned2025-01-06T17:37:34Z
dc.date.available2025-01-06T17:37:34Z
dc.date.issued2021
dc.description.abstractThe present study pertains to the load-deflection behavior and cracking moments of concrete beams with hybrid FRP-steel reinforcement. Under and over-reinforced hybrid beams were tested for failure along with reference beams with only steel or FRP reinforcement. The first-cracking moments of the beams were estimated analytically by using different uncracked moments of the inertia and modulus of rupture definitions. The uncracked moment of inertia definitions include the gross and uncracked transformed moments. The adopted modulus definitions are comprised of the experimental values from tests on prisms and the analytical values from the equations in different concrete codes. Furthermore, analytical methods were developed for estimating the deflections of concrete beams with hybrid FRP-steel or only FRP reinforcement. Two different types of elastic moduli, namely the secant modulus corresponding to the extreme compression fiber strain and the ACI 318M-19 modulus, were used in deflection calculations. Closer estimates were obtained by using the secant modulus, particularly in hybrid-reinforced beams. In the post-yielding region of the steel tension reinforcement, the deflection estimates were established to lay in closer proximity to the experimental curve when obtained by adding up the deflection increments instead of directly calculating the total deflections from the elastic curve equation. Accurate estimation of the cracking moment was found to be vital for the close prediction of deflections.
dc.description.sponsorshipKirikkale University Scientific Research Project Coordination Unit [2016/073]; Polish National Agency for Academic Exchange [PPI/APM/2019/1/00003]
dc.description.sponsorshipThe experimental part of the study was supported by Kirikkale University Scientific Research Project Coordination Unit under the project number 2016/073. The scientific collaborations of this article have been improved by the support of the Polish National Agency for Academic Exchange under Grant No. PPI/APM/2019/1/00003.
dc.identifier.doi10.3390/ma14185341
dc.identifier.issn1996-1944
dc.identifier.issue18
dc.identifier.pmid34576565
dc.identifier.scopus2-s2.0-85115315124
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.3390/ma14185341
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2280
dc.identifier.volume14
dc.identifier.wosWOS:000699874300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofMaterials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjecteffective moment of inertia
dc.subjecttension stiffening
dc.subjectflexural cracking
dc.subjectFRP rupture
dc.subjectfully cracked section
dc.subjectfirst-cracking moment
dc.titleLoad-Deflection Behavior of Over- and Under-Reinforced Concrete Beams with Hybrid FRP-Steel Reinforcements
dc.typeArticle

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