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Eurocode shear design of coarse recycled aggregate concrete: reliability analysis and partial factor calibration

2021-07-22Journal article Open access
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dc.contributor.authorPacheco, João
dc.contributor.authorBrito, Jorge de
dc.contributor.authorChastre, Carlos
dc.contributor.authorEvangelista, Luis
dc.date.accessioned2021-10-06T10:33:59Z
dc.date.available2021-10-06T10:33:59Z
dc.date.issued2021-07-22
dc.description.abstractThis paper contributes to the definition of design clauses for coarse recycled aggregate concrete. One of the main reasons for scepticism towards recycled aggregate concrete is the perceived notion that the heterogeneity of recycled aggregates may increase the uncertainty of the behaviour of concrete. Therefore, the paper uses structural reliability concepts to propose partial factors for recycled aggregate concrete's design for shear failure. The paper builds upon a previous publication by the authors, in which the model uncertainty of recycled aggregate concrete elements designed for shear, with and without shear reinforcement, was compared with that of natural aggregate concrete elements. In that paper, the statistics of the model uncertainty for recycled aggregate concrete shear design were indeed found to be less favourable than those of natural aggregate concrete. Therefore, a partial factor for recycled aggregate concrete design is needed to ensure safety. This paper presents partial factors calibrated with explicit reliability analyses for different cases of design concerning beams (in the case of shear design of elements with shear reinforcement) and slabs (for the design of elements without shear reinforcement). For full incorporation of coarse recycled concrete aggregates and the design of elements without shear reinforcement, the calibrated partial factor reduces the design value of shear resistance by 10% (design with EN1992) or 15% (design with prEN1992) in comparison to natural aggregate concrete's design. For the shear design of elements with shear reinforcement, the partial factor decreases resistance by 5% but a sensitivity analysis showed that the reduction might be, under pessimistic expectations, of up to 20%.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPACHECO, João; [et al] – Eurocode shear design of coarse recycled aggregate concrete: reliability analysis and partial factor calibration. Materials. eISSN 1996-1944. Vol. 14, N.º 15 (2021), pp. 1-22pt_PT
dc.identifier.doi10.3390/ma14154081pt_PT
dc.identifier.eissn1996-1944
dc.identifier.urihttp://hdl.handle.net/10400.21/13823
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationReliability analysis of eco-concrete
dc.subjectEN1992pt_PT
dc.subjectprEN1992pt_PT
dc.subjectShearpt_PT
dc.subjectStructural concretept_PT
dc.subjectRecycled aggregate concretept_PT
dc.subjectReliability analysispt_PT
dc.subjectCoarse recycled concrete aggregatespt_PT
dc.subjectPartial factor calibrationpt_PT
dc.titleEurocode shear design of coarse recycled aggregate concrete: reliability analysis and partial factor calibrationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleReliability analysis of eco-concrete
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/PD%2FBD%2F113643%2F2015/PT
oaire.citation.endPage22pt_PT
oaire.citation.issue15pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume14pt_PT
oaire.fundingStreamOE
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
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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