Olive-stone biomass ash (OBA): An alternative alkaline source for the blast furnace slag activation

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dc.contributor.authorde Moraes Pinheiro, Sayonara Maria
dc.contributor.authorFont, Alba
dc.contributor.authorSoriano, Lourdes
dc.contributor.authorTashima, Mauro M. [UNESP]
dc.contributor.authorMonzó, José
dc.contributor.authorBorrachero, Maria Victoria
dc.contributor.authorPayá, Jordi
dc.contributor.institutionUFES – Federal University of Espírito Santo
dc.contributor.institutionUniversitat Politècnica de Valencia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:53:31Z
dc.date.available2018-12-11T16:53:31Z
dc.date.issued2018-07-30
dc.description.abstractAlkali activated materials (AAM) are being investigated as an alternative binder that could be more eco-efficient than Portland cement. The effect of olive-stone biomass ash (OBA) on the activation of blast furnace slag (BFS) was studied. The mechanical behaviour of mortars in which OBA was replaced, or added to, BFS were compared to those found for BFS mortars activated with potassium hydroxide (KOH) and sodium hydroxide (NaOH) solutions in the range of 4–12 mol·kg−1. The results showed the high efficiency of OBA as activating reagent because it provided similar, or higher, strengths when compared to the alkali hydroxide activating solutions. The microstructural characteristics of the new binding OBA/BFS systems were assessed by X-ray diffraction (XRD), thermogravimetric analysis (TGA), field emission scanning electron microscopy (FESEM) and mercury intrusion porosimetry (MIP). These systems showed lower mean pore diameter and scarcer formation of zeolite structures when compared to KOH/BFS systems. These promising results demonstrated the viability of the use of these type of ashes as activating reagents in AAM.en
dc.description.affiliationUFES – Federal University of Espírito Santo Department of Civil Engineering
dc.description.affiliationICITECH – GIQUIMA Group – Grupo de Investigación en Química de los Materiales de Construcción Instituto de Ciencia y Tecnología del Hormigón Universitat Politècnica de Valencia
dc.description.affiliationUNESP – Grupo de Pesquisa MAC – Materiais Alternativos de Construção Universidade Estadual Paulista, Campus de Ilha Solteira
dc.description.affiliationUnespUNESP – Grupo de Pesquisa MAC – Materiais Alternativos de Construção Universidade Estadual Paulista, Campus de Ilha Solteira
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent327-338
dc.identifierhttp://dx.doi.org/10.1016/j.conbuildmat.2018.05.157
dc.identifier.citationConstruction and Building Materials, v. 178, p. 327-338.
dc.identifier.doi10.1016/j.conbuildmat.2018.05.157
dc.identifier.file2-s2.0-85047650917.pdf
dc.identifier.issn0950-0618
dc.identifier.scopus2-s2.0-85047650917
dc.identifier.urihttp://hdl.handle.net/11449/171052
dc.language.isoeng
dc.relation.ispartofConstruction and Building Materials
dc.relation.ispartofsjr1,607
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAlkali activated material
dc.subjectBlast furnace slag
dc.subjectConservation
dc.subjectOlive-stone biomass ash
dc.subjectStrength development
dc.titleOlive-stone biomass ash (OBA): An alternative alkaline source for the blast furnace slag activationen
dc.typeArtigo

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