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Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2)

2015-10-15Journal article Restricted access
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dc.contributor.authorRao, S.
dc.contributor.authorRaposeiro Da Silva, Pedro
dc.contributor.authorDe Brito, Jorge
dc.date.accessioned2016-02-23T12:15:55Z
dc.date.available2016-02-23T12:15:55Z
dc.date.issued2015-10-15
dc.description.abstractResumo: Cement, as well as the remaining constituents of self-compacting mortars, must be carefully selected, in order to obtain an adequate composition with a granular mix as compact as possible and a good performance in the fresh state (self-compacting effect) and the hardened state (mechanical and durability-related behavior). Therefore in this work the possibility of incorporating nano particles in self-compacting mortars was studied. Nano materials are very reactive due mostly to their high specific surface and show a great potential to improve the properties of these mortars, both in mechanical and durability terms. In this work two nano materials were used, nano silica (nano SiO2) in colloidal state and nano titanium (nano TiO2) in amorphous state, in two types of self-compacting mortars (ratio binder:sand of 1:1 and 1:2). The self-compacting mortar mixes have the same water/cement ratio and 30% of replacement of cement with fly ashes. The influence of nano materials nano-SiO2 and nano-TiO2 on the fresh and hardened state properties of these self-compacting mortars was studied. The results show that the use of nano materials in repair and rehabilitation mortars has significant potential but still needs to be optimized. (C) 2015 Elsevier Ltd. All rights reserved.pt_PT
dc.identifier.citationRAO, S; SILVA, Pedro Raposeiro da; BRITO, Jorge de - Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2). Construction and Building Materials. ISSN. 0950-0618 Vol. 96 (2015), pp. 508-517pt_PT
dc.identifier.doi10.1016/j.conbuildmat.2015.08.049pt_PT
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.urihttp://hdl.handle.net/10400.21/5702
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier Science LTDpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0950061815302737pt_PT
dc.subjectSelf-compacting mortarpt_PT
dc.subjectFly ashpt_PT
dc.subjectNano titaniumpt_PT
dc.subjectNano silicapt_PT
dc.subjectFresh propertiespt_PT
dc.subjectMechanical propertiespt_PT
dc.subjectDurabilitypt_PT
dc.titleExperimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage517pt_PT
oaire.citation.startPage508pt_PT
oaire.citation.titleConstruction and Building Materialspt_PT
oaire.citation.volume96pt_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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