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Rheology of self-compacting concrete mortar phase

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dc.contributor.authorOliveira, Luiz Antonio Pereira de
dc.contributor.authorNepomuceno, Miguel
dc.contributor.authorCarvalho, José Carlos Monteiro de
dc.date.accessioned2018-01-05T11:36:10Z
dc.date.available2018-01-05T11:36:10Z
dc.date.issued2013
dc.description.abstractThe workability of self-compacting concrete is strongly dependent of its mortar phase rheological behaviour. In fact, some powders materials and the new generation superplasticizer have been employed to attain the self-compactability in concrete mixtures. Normally, the SCC mixtures present a high amount of mortar in their composition. Thus, the SCC mortar phase has a very important influence on the SCC rheological behaviour that is also influenced by the materials used to compose the mortar phase. Some rheological properties as plastic viscosity and thixotropy are important to define the self-compacting concrete workability. These properties are critical mainly when filling the formwork on site to achieve the compactness of the final product, since this type of concrete is applied without any vibration or other form of compaction. Thus, an approach of SCC rheological behaviour by previous mortar phase behaviour knowledge is especially relevant. This article describes an experimental study to evaluate the influence of different SCC mortar phase composition on the rheological behaviour. Powders materials of different nature, some them from wastes materials, are used to compose the mortar phase. The rheological parameters as relative yield stress and plastic viscosity was determined with a rheometer and others tests as slump flow (spread cone) and fluidity (v-funnel) were also used. The results provided a comparative and critical analysis of the relative influence of the mortars materials on the rheological parameters. It was found that the rheological behaviour of SCC mortar phase is represented by the Herschel-Buckley model.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationL.A. Pereira de Oliveira, M.C.S. Nepomuceno, J.C.M. Carvalho, Rheology of self-compacting concrete mortar phase, Proceedings of the Twin Covilhã International Conferences on Civil Engineering - Towards a Better Environment, CE 2013 and the Concrete Future, CF 2013 (2013). ISBN:9789810760670.pt_PT
dc.identifier.isbn9789810760670
dc.identifier.urihttp://hdl.handle.net/10400.6/4579
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectRheologypt_PT
dc.subjectSelf-compacting mortarpt_PT
dc.subjectYield stresspt_PT
dc.subjectPlastic viscositypt_PT
dc.titleRheology of self-compacting concrete mortar phasept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleProceedings of the Twin Covilhã International Conferences on Civil Engineering - Towards a Better Environment, CE 2013 and the Concrete Future, CF 2013pt_PT
person.familyNameNepomuceno
person.givenNameMiguel Costa Santos
person.identifierhttp://scholar.google.pt/citations?user=IguykP4AAAAJ
person.identifier.ciencia-idF710-57AF-521F
person.identifier.orcid0000-0003-3865-490X
person.identifier.scopus-author-idhttp://www.scopus.com/authid/detail.url?authorId=36246411800
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd93f6f35-204d-4bd1-a38a-5ec3c39a31e3
relation.isAuthorOfPublication.latestForDiscoveryd93f6f35-204d-4bd1-a38a-5ec3c39a31e3

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