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Effect of sewage sludge ash on mechanical and microstructural properties of geopolymers based on metakaolin

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Effect of sewage sludge ash on mechanical and microstructural properties of geopolymers based on metakaolin

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dc.contributor.author Istuque, D.B. es_ES
dc.contributor.author Soriano Martinez, Lourdes es_ES
dc.contributor.author Akasaki, J.L. es_ES
dc.contributor.author Melges, J.L.P. es_ES
dc.contributor.author Borrachero Rosado, María Victoria es_ES
dc.contributor.author Monzó Balbuena, José Mª es_ES
dc.contributor.author Paya Bernabeu, Jorge Juan es_ES
dc.contributor.author Tashima, M.M. es_ES
dc.date.accessioned 2020-06-05T03:32:30Z
dc.date.available 2020-06-05T03:32:30Z
dc.date.issued 2019-04-10 es_ES
dc.identifier.issn 0950-0618 es_ES
dc.identifier.uri http://hdl.handle.net/10251/145402
dc.description.abstract [EN] This paper explored the effect of sewage sludge ash (SSA) on the mechanical and microstructural properties of geopolymers based on metakaolin (MK) involving two different SiO2/Na2O molar ratios (0.8 and 1.6), two temperature curing conditions (25 degrees C and 65 degrees C) and various ages of curing (1, 3, 7, 14, 28, 90 or 180 days). The geopolymers were characterized using different techniques as X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and compressive strength of mortars. The compressive strength tests showed that the replacement of MK by SSA in 10 wt% when cured at 25 degrees C with the highest SiO2/Na2O molar ratio reaches similar compressive strengths after 14 days of curing compared to the samples with only MK, which reached a maximum compressive strength of 50.8 MPa at 180 days. The FTIR analyses carried out in the geopolymer pastes with SSA (10 wt% of SSA and 90 wt% of MK) showed a formation of N-A-S-H gels in the samples cured at 25 degrees C. The microstructural studies by XRD, TGA and SEM pointed out the formation of a crystalline phase as Na P-type zeolite in MK/SSA based-geopolymer pastes cured at 65 degrees C, which explained the loss of compressive strength of the samples cured at high temperature. However, the SSA retarded the crystallization process in the MK based-geopolymer. (C) 2019 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship This research has been supported by funding agency Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (processo n° 309015/2015-4). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Construction and Building Materials es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Geopolymer es_ES
dc.subject Alkali-activated cement es_ES
dc.subject Sewage sludge ash es_ES
dc.subject Waste management es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Effect of sewage sludge ash on mechanical and microstructural properties of geopolymers based on metakaolin es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.conbuildmat.2019.01.093 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/CNPq//309015%2F2015-4/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//BIA2015-70107-R/ES/APLICACIONES DE SISTEMAS GEOPOLIMERICOS OBTENIDOS A PARTIR DE MEZCLAS DE RESIDUOS: MORTEROS,HORMIGONES Y ESTABILIZACION DE SUELOS/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Ciencia y Tecnología del Hormigón - Institut de Ciència i Tecnologia del Formigó es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería de la Construcción y de Proyectos de Ingeniería Civil - Departament d'Enginyeria de la Construcció i de Projectes d'Enginyeria Civil es_ES
dc.description.bibliographicCitation Istuque, D.; Soriano Martinez, L.; Akasaki, J.; Melges, J.; Borrachero Rosado, MV.; Monzó Balbuena, JM.; Paya Bernabeu, JJ.... (2019). Effect of sewage sludge ash on mechanical and microstructural properties of geopolymers based on metakaolin. Construction and Building Materials. 203:95-103. https://doi.org/10.1016/j.conbuildmat.2019.01.093 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.conbuildmat.2019.01.093 es_ES
dc.description.upvformatpinicio 95 es_ES
dc.description.upvformatpfin 103 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 203 es_ES
dc.relation.pasarela S\381288 es_ES
dc.contributor.funder Coordenaçao de Aperfeiçoamento de Pessoal de Nível Superior, Brasil es_ES
dc.contributor.funder Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasil es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES


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