Assessment of pozzolanic/hydraulic reactivity of vitreous calcium aluminosilicate (VCAS)

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dc.contributor.authorTashima, M. M. [UNESP]
dc.contributor.authorSoriano, L.
dc.contributor.authorPayá, J.
dc.contributor.authorMonzó, J.
dc.contributor.authorBorrachero, M. V.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversitat Politècnica de València
dc.date.accessioned2018-12-11T16:41:19Z
dc.date.available2018-12-11T16:41:19Z
dc.date.issued2016-04-15
dc.description.abstractThe aim of this paper is to assess the possibility of using vitreous calcium aluminosilicate (VCAS) as a supplementary cementitious material in the production of Portland cement mortars. The calcium hydroxide consumption by VCAS is assessed by two different methods: firstly, a classical method based on thermogravimetric analysis (TGA) and, secondly, pH and electrical conductivity measurements of calcium hydroxide/VCAS suspensions with excess calcium hydroxide. Evidence of pozzolanic reactivity of VCAS is revealed in hydrated lime pastes, and low reactivity was observed in aqueous suspensions. The reactivity of VCAS is also assessed by means of TGA of VCAS/OPC pastes and by means of the mechanical strength development of Portland cement mortars, with VCAS replacement percentages in the range of 10-30%. The results obtained show that pozzolanic and hydraulic reactions take place in OPC systems. VCAS can be used as a supplementary cementitious material by replacing OPC at levels of 10-30% by mass.en
dc.description.affiliationUNESP - Univ Estadual Paulista Campus de Ilha Solteira, Alameda Bahia, 550
dc.description.affiliationInstituto de Ciencia y Tecnología del Hormigón Universitat Politècnica de València, Camino de Vera s/n, Edificio 4G
dc.description.affiliationUnespUNESP - Univ Estadual Paulista Campus de Ilha Solteira, Alameda Bahia, 550
dc.format.extent424-430
dc.identifierhttp://dx.doi.org/10.1016/j.matdes.2016.02.036
dc.identifier.citationMaterials and Design, v. 96, p. 424-430.
dc.identifier.doi10.1016/j.matdes.2016.02.036
dc.identifier.issn1873-4197
dc.identifier.issn0264-1275
dc.identifier.scopus2-s2.0-84960081201
dc.identifier.urihttp://hdl.handle.net/11449/168451
dc.language.isoeng
dc.relation.ispartofMaterials and Design
dc.relation.ispartofsjr1,820
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectCompressive strength
dc.subjectHydraulic reactivity
dc.subjectPH and electrical conductivity measurements
dc.subjectPozzolanic reactivity
dc.subjectThermogravimetric analysis
dc.subjectVCAS
dc.titleAssessment of pozzolanic/hydraulic reactivity of vitreous calcium aluminosilicate (VCAS)en
dc.typeArtigo

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