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Characterization and properties of elephant grass ashes as supplementary cementing material in pozzolan/Ca(OH)(2) pastes

dc.contributor.authorNakanishi, Erika Y.
dc.contributor.authorFrias, Moises
dc.contributor.authorMartinez-Ramirez, Sagrario
dc.contributor.authorSantos, Sergio F. [UNESP]
dc.contributor.authorRodrigues, Michelle S.
dc.contributor.authorRodriguez, Olga
dc.contributor.authorSavastano, Holmer
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionEduardo Torroja Inst IETcc CSIC
dc.contributor.institutionMatter Struct Inst IEM CSIC
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:53:24Z
dc.date.available2015-03-18T15:53:24Z
dc.date.issued2014-12-30
dc.description.abstractThis work presents the behavior of two elephant grass ashes, as pozzolans, elephant grass cameroon (EGC) and napier (EGN), calcined under controlled conditions (700 degrees C). The ashes were initially submitted to a chemical treatment with HCI in order to reduce the potassium content. Both ashes showed high pozzolanic activity after 7 days of curing, with at least 85% of fixed lime. The thermogravimetric and micro-Raman analysis in elephant grass ashes/Ca(OH)(2) pastes confirmed that the main hydrated phases during the pozzolanic reaction consisted of CSH gels, by the weight loss between 60 and 300 degrees C in TG analysis and the band at 680 cm(-1) in Raman spectrums. Based on the achieved results, it is possible to conclude that elephant grass ashes can be used as supplementary cementing materials. (C) 2014 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Sao Paulo, Fac Anim Sci & Food Engn, BR-13635900 Pirassununga, SP, Brazil
dc.description.affiliationEduardo Torroja Inst IETcc CSIC, Madrid 28033, Spain
dc.description.affiliationMatter Struct Inst IEM CSIC, Madrid 28006, Spain
dc.description.affiliationSao Paulo State Univ, Fac Engn, Dept Mat & Technol, Guaratingueta, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Fac Engn, Dept Mat & Technol, Guaratingueta, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 11/16842-5
dc.description.sponsorshipIdFAPESP: 10/16524-0
dc.description.sponsorshipIdFAPESP: 09/17293-5
dc.description.sponsorshipIdFAPESP: 13/50790-8
dc.description.sponsorshipIdCNPq: 306386/2013-5
dc.format.extent391-398
dc.identifierhttp://dx.doi.org/10.1016/j.conbuildmat.2014.09.078
dc.identifier.citationConstruction And Building Materials. Oxford: Elsevier Sci Ltd, v. 73, p. 391-398, 2014.
dc.identifier.doi10.1016/j.conbuildmat.2014.09.078
dc.identifier.issn0950-0618
dc.identifier.orcid0000-0003-3384-0754
dc.identifier.urihttp://hdl.handle.net/11449/116490
dc.identifier.wosWOS:000345806100045
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofConstruction And Building Materials
dc.relation.ispartofjcr3.485
dc.relation.ispartofsjr1,607
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAgro-industrial wasteen
dc.subjectElephant grassen
dc.subjectThermal activationen
dc.subjectPozzolanen
dc.subjectLime pastesen
dc.subjectAlternative binderen
dc.titleCharacterization and properties of elephant grass ashes as supplementary cementing material in pozzolan/Ca(OH)(2) pastesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.orcid0000-0003-3384-0754[4]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Guaratinguetápt
unesp.departmentMateriais e Tecnologia - FEGpt

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