Influence of processing parameters variation on the development of geopolymeric ceramic blocks with calcined kaolinite clay

dc.contributor.authorJunior, José Alexandre Linhares
dc.contributor.authorde Azevedo, Afonso Rangel Garcez
dc.contributor.authorMarvila, Markssuel Teixeira
dc.contributor.authorTeixeira, Silvio Rainho [UNESP]
dc.contributor.authorFediuk, Roman
dc.contributor.authorVieira, Carlos Maurício Fontes
dc.contributor.institutionLAMAV – Advanced Materials Laboratory
dc.contributor.institutionLECIV – Civil Engineering Laboratory
dc.contributor.institutionUniversidade Federal de Viçosa (UFV)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionFar Eastern Federal University
dc.date.accessioned2022-04-29T08:38:42Z
dc.date.available2022-04-29T08:38:42Z
dc.date.issued2022-06-01
dc.description.abstractThe cement industry is responsible for a considerable part of the emission of gases that cause the greenhouse effect. In this context, geopolymer materials have been the subject of extensive studies, as they are an ecologically sustainable viable alternative to Portland cement. The geopolymer consists of a part rich in silica and alumina and another alkaline activating fraction, not having burning steps in its production chain, which consequently reduces the emission of CO2. Geopolymers also allow the incorporation of specific residues in its precursor part, such as calcined clays. The specimens for this study were produced by the molding process, using commercial metakaolin as the basis for the precursor fraction. After demolding, the test cups were subjected to ambient curing at 25 °C and thermal curing at 80 °C, for periods of 7, 14 and 28 days. The objective of this work was to analyze the behavior of geopolymers specimens against the variation of several parameters such as percentage of calcined clay (CC) incorporation into metakaolin in 10% and 20%, its granulometry in 100 and 200 Mesh, the molar ratio of SiO2/Al2O3, type and period of cure to evaluate technological properties such as resistance to bending, open porosity, water absorption, linear shrinkage and bulk density, aiming for future applications in the production of ceramic bricks. The results showed that an increase in the percentage of CC incorporation contributes to an improvement in the flexural strength, reaching 4.88 MPa to 20%. The molar SiO2/Al2O3 ratio of 3.0 was the most ideal. The importance of this study is linked to the evaluation of several parameters for the incorporation of calcined clay, in order to obtain properties required for future applications in ceramic bricks.en
dc.description.affiliationUENF - State University of the Northern Rio de Janeiro LAMAV – Advanced Materials Laboratory, Av. Alberto Lamego, 2000, Campos dos Goytacazes
dc.description.affiliationUENF - State University of the Northern Rio de Janeiro LECIV – Civil Engineering Laboratory, Av. Alberto Lamego, 2000, Campos dos Goytacazes
dc.description.affiliationUFV - Federal University of Viçosa CRP – Rio Paranaíba Campus, Rio Paranaíba
dc.description.affiliationUNESP - São Paulo State University Faculty of Science and Technology - FCT Department of Physics, Rua Roberto Simonsen, 305
dc.description.affiliationPolytechnic Institute Far Eastern Federal University
dc.description.affiliationUnespUNESP - São Paulo State University Faculty of Science and Technology - FCT Department of Physics, Rua Roberto Simonsen, 305
dc.identifierhttp://dx.doi.org/10.1016/j.cscm.2022.e00897
dc.identifier.citationCase Studies in Construction Materials, v. 16.
dc.identifier.doi10.1016/j.cscm.2022.e00897
dc.identifier.issn2214-5095
dc.identifier.scopus2-s2.0-85123033302
dc.identifier.urihttp://hdl.handle.net/11449/230243
dc.language.isoeng
dc.relation.ispartofCase Studies in Construction Materials
dc.sourceScopus
dc.subjectCalcined clay
dc.subjectFlexural strength
dc.subjectGeopolymer
dc.subjectWater absorption
dc.titleInfluence of processing parameters variation on the development of geopolymeric ceramic blocks with calcined kaolinite clayen
dc.typeArtigo

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