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Durability performance of self-compacting concrete (SCC) with binary and ternary mixes of fly ash and limestone filler

2016-07Journal article Restricted access
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dc.contributor.authorRaposeiro Da Silva, Pedro
dc.contributor.authorDe Brito, Jorge
dc.date.accessioned2019-02-22T14:13:09Z
dc.date.available2019-02-22T14:13:09Z
dc.date.issued2016-07
dc.description.abstractThe basic objective of this work is to evaluate the durability of self-compacting concrete (SCC) produced in binary and ternary mixes using fly ash (FA) and limestone filler (LF) as partial replacement of cement. The main characteristics that set SCC apart from conventional concrete (fundamentally its fresh state behaviour) essentially depend on the greater or lesser content of various constituents, namely: greater mortar volume (more ultrafine material in the form of cement and mineral additions); proper control of the maximum size of the coarse aggregate; use of admixtures such as superplasticizers. Significant amounts of mineral additions are thus incorporated to partially replace cement, in order to improve the workability of the concrete. These mineral additions necessarily affect the concrete's microstructure and its durability. Therefore, notwithstanding the many well-documented and acknowledged advantages of SCC, a better understanding its behaviour is still required, in particular when its composition includes significant amounts of mineral additions. An ambitious working plan was devised: first, the SCC's microstructure was studied and characterized and afterwards the main transport and degradation mechanisms of the SCC produced were studied and characterized by means of SEM image analysis, chloride migration, electrical resistivity, and carbonation tests. It was then possible to draw conclusions about the SCC's durability. The properties studied are strongly affected by the type and content of the additions. Also, the use of ternary mixes proved to be extremely favourable, confirming the expected beneficial effect of the synergy between LF and FA.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSILVA, Pedro Raposeiro da; BRITO, Jorge de – Durability performance of self-compacting concrete (SCC) with binary and ternary mixes of fly ash and limestone filler. Materials and Structures. ISSN 1359-5997. Vol. 49, N.º 7 (2016), pp. 2749-2766pt_PT
dc.identifier.doi10.1617/s11527-015-0683-6pt_PT
dc.identifier.issn1359-5997
dc.identifier.issn1871-6873
dc.identifier.urihttp://hdl.handle.net/10400.21/9577
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relation.publisherversionhttps://link.springer.com/content/pdf/10.1617%2Fs11527-015-0683-6.pdfpt_PT
dc.subjectSelf-compacting concretept_PT
dc.subjectDurabilitypt_PT
dc.subjectSEM image analysispt_PT
dc.subjectChloride migrationpt_PT
dc.subjectElectrical resistivitypt_PT
dc.subjectCarbonationpt_PT
dc.titleDurability performance of self-compacting concrete (SCC) with binary and ternary mixes of fly ash and limestone fillerpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2766pt_PT
oaire.citation.issue7pt_PT
oaire.citation.startPage2749pt_PT
oaire.citation.titleMaterials and Structurespt_PT
oaire.citation.volume49pt_PT
person.familyNameSoares Raposeiro da Silva
person.familyNameCaliço Lopes de Brito
person.givenNamePedro Miguel
person.givenNameJorge Manuel
person.identifierA-4299-2008
person.identifier.ciencia-idFC17-45FB-A606
person.identifier.ciencia-id921D-3921-8308
person.identifier.orcid0000-0001-8770-8439
person.identifier.orcid0000-0001-6766-2736
person.identifier.ridA-1832-2012
person.identifier.scopus-author-id56585411500
person.identifier.scopus-author-id7003285554
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication94ce96d2-f413-4edc-90e7-3bf4f5ea6ab6
relation.isAuthorOfPublicationebc80e57-531a-4fe5-ac87-4d8382b7de2e
relation.isAuthorOfPublication.latestForDiscoveryebc80e57-531a-4fe5-ac87-4d8382b7de2e

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