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dc.contributor.authorPerez, G.
dc.contributor.authorGaitero, J.J.
dc.contributor.authorErkizia, E.
dc.contributor.authorJimenez, I.
dc.contributor.authorGuerrero, A.
dc.date.accessioned2016-04-26T14:00:44Z
dc.date.available2016-04-26T14:00:44Z
dc.date.issued2015-07
dc.identifier.citationCEMENT & CONCRETE COMPOSITES, Vol. 60 (2015), pp. 55-64en
dc.identifier.issn0958-9465en
dc.identifier.urihttp://hdl.handle.net/11556/220
dc.description.abstractTwo innovative additions are considered for the development of self-healing concrete: epoxy-containing silica microcapsules and amine-functionalized nanosilica. The effect of two concentrations of the additions on the microstructure of a cement paste with silica fume is studied. The results indicate a proper dispersion of the additions within the matrix, a pozzolanic reaction induced by nanosilica and the stability of the microcapsules that reliably isolate the epoxy from the paste. As the concentration of additions increases, a preferential orientation of the portlandite phase is observed, together with a decrease of the compressive strength due to the presence of a minor content of macropores and to the low strength of the capsules. The self-healing efficiency is confirmed in concrete specimens for 150 gm wide cracks and a particular concentration of the additions. These results will be essential for the subsequent development of a reliable self-healing concrete based in the epoxy-amine adhesive.en
dc.language.isoengen
dc.publisherELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDen
dc.titleCharacterisation of cement pastes with innovative self-healing system based in epoxy-amine adhesiveen
dc.typearticleen
dc.identifier.doi10.1016/j.cemconcomp.2015.03.010en
dc.isiYesen
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsMicrostructureen
dc.subject.keywordsCharacterisationen
dc.subject.keywordsCementitious materialen
dc.subject.keywordsSelf-healingen
dc.subject.keywordsNanosilicaen
dc.subject.keywordsMicrocapsuleen


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