Preliminary studies on the use of sugar cane bagasse ash (SCBA) in the manufacture of alkali activated binders

dc.contributor.authorCastaldelli, V. N. [UNESP]
dc.contributor.authorTashima, M. M.
dc.contributor.authorMelges, J. L. [UNESP]
dc.contributor.authorAkasaki, J. L. [UNESP]
dc.contributor.authorMonzó, J.
dc.contributor.authorBorrachero, M. V.
dc.contributor.authorSoriano, L.
dc.contributor.authorPayá, J.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInstituto de Ciencia y Tecnología del Hormigón-ICITECH, Universitat Politècnica de ValènciarUPV
dc.date.accessioned2018-12-11T16:37:34Z
dc.date.available2018-12-11T16:37:34Z
dc.date.issued2014-01-01
dc.description.abstractAlkali activated binders require the addition of a mineral-rich amorphous silica and alumina. This paper proposes the use of a mineral residue from the burning of sugar cane bagasse. The alkali activated mixtures were prepared containing binary mixtures of sugar cane bagasse ash (SCBA) and other mineral admixtures: fly ash (FA) or blast furnace slag (BFS). As alkaline activators, mixtures of alkali (Na+ or K+) hydroxide and alkali (Na+ or K+) silicate were used. Alkali-activated pastes and mortars containing binary systems SCBA/FA or SCBA/BFS were prepared and cured at 65 °C. Microstructural properties of these alternative binders were assessed by means of TGA, SEM, XRD and pH measurements. Mechanical strength of mortars was performed after 3 and 7 days at 65 °C. Compressive mechanical strengths of these mortars were in the range 30-55 MPa, showing the good mechanical performance achieved by the alkali activation. Microstructural studies suggested the development of stable matrices and the formation of typical gel. © (2014) Trans Tech Publications, Switzerland.en
dc.description.affiliationUNESP - Univ. Estadual Paulista, Campus de Ilha Solteira. Alameda Bahia, Ilha Solteira-SP
dc.description.affiliationInstituto de Ciencia y Tecnología del Hormigón-ICITECH, Universitat Politècnica de ValènciarUPV, España. Camino de Vera s/n, Valencia
dc.description.affiliationUnespUNESP - Univ. Estadual Paulista, Campus de Ilha Solteira. Alameda Bahia, Ilha Solteira-SP
dc.format.extent689-698
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/KEM.600.689
dc.identifier.citationKey Engineering Materials, v. 600, p. 689-698.
dc.identifier.doi10.4028/www.scientific.net/KEM.600.689
dc.identifier.issn1013-9826
dc.identifier.scopus2-s2.0-84898916856
dc.identifier.urihttp://hdl.handle.net/11449/167601
dc.language.isoeng
dc.relation.ispartofKey Engineering Materials
dc.relation.ispartofsjr0,180
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAlkali activation
dc.subjectMechanical strength
dc.subjectMicrostructure
dc.subjectSugar cane bagasse ash (SCBA)
dc.titlePreliminary studies on the use of sugar cane bagasse ash (SCBA) in the manufacture of alkali activated bindersen
dc.typeTrabalho apresentado em evento

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