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Neutral Axis Depth versus Ductility and Plastic Rotation Capacity on Bending in Lightweight-Aggregate Concrete Beams

dc.contributor.authorBernardo, Luís
dc.contributor.authorNepomuceno, Miguel
dc.contributor.authorPinto, Hugo
dc.date.accessioned2020-01-22T12:23:02Z
dc.date.available2020-01-22T12:23:02Z
dc.date.issued2019
dc.description.abstractThis article presents an experimental study on the evolution of the neutral axis depth at failure in the critical section with the flexural ductility and plastic rotation capacity of reinforced concrete (RC) lightweight-aggregate concrete (LWAC) beams. For this, the results of a previous experimental program involving RC LWAC beams tested in flexure until failure are used. The variable studies were the concrete compressive strength (between 22.0 and 60.4 MPa and dry density between 1651 and 1953 kg/m3) and the longitudinal tensile reinforcement ratio (between 0.13% and 2.69%). The flexural ductility and the plastic rotation capacity of the RC LWAC beams are characterized by a ductility index and a plastic trend parameter, respectively. The influence of the variable studies, as well as the relation of the flexural ductility and plastic rotation capacity with the values for the neutral axis depth at failure are analyzed and discussed. Some conclusions are drawn which can be useful for the design of RC LWAC beams for flexure. In particular, it is shown that the practical rule of limiting the neutral axis depth at failure to ensure ductile behavior, as used in normal-weight aggregate concrete beams, is also valid for RC LWAC beams.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLuís Bernardo, Miguel Nepomuceno, Hugo Pinto, Neutral axis depth versus ductility and plastic rotation capacity on bending in lightweight-aggregate concrete beams, Materials 12(21) (2019) 3479. doi:10.3390/ma12213479.pt_PT
dc.identifier.doi10.3390/ma12213479pt_PT
dc.identifier.issn1996-1944
dc.identifier.urihttp://hdl.handle.net/10400.6/8581
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPI AG, Basel, Switzerlandpt_PT
dc.relationCentre of Materials and Building Technologies
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectLightweight-aggregate concretept_PT
dc.subjectReinforced concretept_PT
dc.subjectBeamspt_PT
dc.subjectBendingpt_PT
dc.subjectNeutral axis depthpt_PT
dc.subjectDuctilitypt_PT
dc.subjectPlastic rotation capacitypt_PT
dc.titleNeutral Axis Depth versus Ductility and Plastic Rotation Capacity on Bending in Lightweight-Aggregate Concrete Beamspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre of Materials and Building Technologies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FECI%2F04082%2F2019/PT
oaire.citation.issue21pt_PT
oaire.citation.startPage3479pt_PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume12pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBernardo
person.familyNameNepomuceno
person.familyNameSILVA PINTO
person.givenNameLuís
person.givenNameMiguel Costa Santos
person.givenNameHUGO ALEXANDRE
person.identifier305712
person.identifierhttp://scholar.google.pt/citations?user=IguykP4AAAAJ
person.identifier.ciencia-id031F-9022-653B
person.identifier.ciencia-idF710-57AF-521F
person.identifier.ciencia-id7C1D-9E64-9EC4
person.identifier.orcid0000-0003-0484-350X
person.identifier.orcid0000-0003-3865-490X
person.identifier.orcid0000-0002-1028-4655
person.identifier.ridO-3212-2013
person.identifier.scopus-author-id8070435300
person.identifier.scopus-author-idhttp://www.scopus.com/authid/detail.url?authorId=36246411800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationd93f6f35-204d-4bd1-a38a-5ec3c39a31e3
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