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Uncertainty of shear resistance models: Influence of recycled concrete aggregate on beams with and without shear reinforcement

2020-02-01Journal article Restricted access
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dc.contributor.authorPacheco, João
dc.contributor.authorDe Brito, Jorge
dc.contributor.authorChastre, Carlos
dc.contributor.authorEvangelista, Luis
dc.date.accessioned2020-03-05T15:16:42Z
dc.date.available2020-03-05T15:16:42Z
dc.date.issued2020-02-01
dc.description.abstractThe model uncertainty of the shear resistance equations of three design codes {the current Eurocode 2 (2004), Model Code (2010), and the final draft of the Eurocode 2 (2020)} was investigated for coarse natural and recycled aggregate concrete beams. Databases of beams with and without shear reinforcement were made with clearly defined criteria. The statistics of the model uncertainty of natural and recycled concrete beams were compared and it was found that recycled aggregate incorporation has detrimental effects on the model uncertainty of shear design. Surprisingly, recycled concrete aggregate beams designed following the current version of Eurocode 2 (2004) are safer than those designed using the other codes. This is due to the shear resistance equations of the latter overestimating the aggregate interlock of recycled aggregate. A preliminary partial factor was proposed, offsetting the influence of recycled aggregate on the safety of beam designs. The database of beams with shear reinforcement lacks representativeness but hinted that recycled aggregate incorporation also reduces the safety of this type of shear design. The paper finishes presenting suggestions of experiments that would complement the current knowledge on this topic.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPACHECO, João Nuno; [et al] – Uncertainty of shear resistance models: Influence of recycled concrete aggregate on beams with and without shear reinforcement. Engineering Structures. ISSN 0141-0296. Vol. 204 (2020), pp. 1-14pt_PT
dc.identifier.doi10.1016/j.engstruct.2019.109905pt_PT
dc.identifier.issn0141-0296
dc.identifier.issn1873-7323
dc.identifier.urihttp://hdl.handle.net/10400.21/11203
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPD/BD/113643/2015 - FCTpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0141029619323119pt_PT
dc.subjectModel uncertaintypt_PT
dc.subjectRecycled aggregate concretept_PT
dc.subjectShearpt_PT
dc.subjectEurocode 2pt_PT
dc.subjectModel code 2010pt_PT
dc.subjectPartial factorpt_PT
dc.titleUncertainty of shear resistance models: Influence of recycled concrete aggregate on beams with and without shear reinforcementpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage14pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEngineering Structurespt_PT
oaire.citation.volume204pt_PT
person.familyNamePacheco
person.familyNameCaliço Lopes de Brito
person.familyNameChastre
person.familyNameFaria Rocha Evangelista
person.givenNameJoão
person.givenNameJorge Manuel
person.givenNameCarlos
person.givenNameLuís Manuel
person.identifier1007584
person.identifierA-4299-2008
person.identifierB-9864-2011
person.identifier.ciencia-idD414-B33B-01E0
person.identifier.ciencia-id921D-3921-8308
person.identifier.ciencia-idA612-1A5B-D93D
person.identifier.orcid0000-0001-9348-1226
person.identifier.orcid0000-0001-6766-2736
person.identifier.orcid0000-0002-7708-6995
person.identifier.orcid0000-0001-8406-6864
person.identifier.ridR-2558-2016
person.identifier.ridC-6746-2008
person.identifier.scopus-author-id56800010700
person.identifier.scopus-author-id7003285554
person.identifier.scopus-author-id36008057200
person.identifier.scopus-author-id57201241744
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication72875b42-767e-4153-a2ec-1fc07cab3918
relation.isAuthorOfPublicationebc80e57-531a-4fe5-ac87-4d8382b7de2e
relation.isAuthorOfPublicationf632d2fc-caf8-4621-9e21-858a26ffcfd1
relation.isAuthorOfPublication8463f3f2-8bac-44bf-82af-6d46db906c73
relation.isAuthorOfPublication.latestForDiscovery72875b42-767e-4153-a2ec-1fc07cab3918

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