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Experimental study of the porosity and microstructure of self-compacting concrete (SCC) with binary and ternary mixes of fly ash and limestone filler

2015-07-01Journal article Restricted access
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dc.contributor.authorRaposeiro Da Silva, Pedro
dc.contributor.authorDe Brito, Jorge
dc.date.accessioned2016-02-23T15:40:16Z
dc.date.available2016-02-23T15:40:16Z
dc.date.issued2015-07-01
dc.description.abstractAbstract Self-compacting concrete (SCC) can soon be expected to replace conventional concrete due to its many advantages. Its main characteristics in the fresh state are achieved essentially by a higher volume of mortar (more ultrafine material) and a decrease of the coarse-aggregates. The use of over-large volumes of additions such as fly ash (FA) and/or limestone filler (LF) can substantially affect the concrete's pore structure and consequently its durability. In this context, an experimental programme was conducted to evaluate the effect on the concrete's porosity and microstructure of incorporating FA and LF in binary and ternary mixes of SCC. For this, a total of 11 SCC mixes were produced: 1 with cement only (C); 3 with C + FA in 30%, 60% and 70% substitution (fad); 3 with C + LF in 30%, 60% and 70% fad; 4 with C + FA + LF in combinations of 10-20%, 20-10%, 20-40% and 40-20% fad, respectively. The results enabled conclusions to be established regarding the SCC's durability, based on its permeability and the microstructure of its pore structure. The properties studied are strongly affected by the type and quantity of additions. The use of ternary mixes also proves to be extremely favourable, confirming the beneficial effect of the synergy between these additions. © 2015 Elsevier Ltd. All rights reserved.pt_PT
dc.identifier.citationSILVA, Pedro Raposeiro da; BRITO, Jorge de - (E)xperimental study of the porosity and microstructure of self-compacting concrete (SCC) with binary and ternary mixes of fly ash and limestone filler. Construction and Building Materials. ISSN. 0950-0618. Vol. 86 (2015), pp. 101-112pt_PT
dc.identifier.doi10.1016/j.conbuildmat.2015.03.110pt_PT
dc.identifier.issn0950-0618
dc.identifier.urihttp://hdl.handle.net/10400.21/5710
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier LTDpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0950061815003955pt_PT
dc.subjectMercury intrusion porosimetrypt_PT
dc.subjectMicrostructurept_PT
dc.subjectPermeabilitypt_PT
dc.subjectPorositypt_PT
dc.subjectSelf-compacting concretept_PT
dc.subjectWater absorptionpt_PT
dc.titleExperimental study of the porosity and microstructure 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.endPage112pt_PT
oaire.citation.startPage101pt_PT
oaire.citation.volume86pt_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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