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Mechanical and durability properties of alkali-activated mortar based on sugarcane bagasse ash and blast furnace slag

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Mechanical and durability properties of alkali-activated mortar based on sugarcane bagasse ash and blast furnace slag

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dc.contributor.author Pereira, Adriana es_ES
dc.contributor.author Akasaki, Jorge Luis es_ES
dc.contributor.author Melges, José L.P. es_ES
dc.contributor.author Mitsuuchi Tashima, Mauro es_ES
dc.contributor.author Soriano Martínez, Lourdes 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.date.accessioned 2016-09-27T09:00:10Z
dc.date.available 2016-09-27T09:00:10Z
dc.date.issued 2015-12
dc.identifier.issn 0272-8842
dc.identifier.uri http://hdl.handle.net/10251/70464
dc.description.abstract Sugarcane bagasse is an agricultural waste which can be transformed, for cementing purposes, into an interesting material by combustion. Specifically, the ash (SBA) obtained by auto-combustion was used for preparing alkali-activated cements by blending blast furnace slag (BFS). SBA had a large amount of quartz; however, it reacted in high alkaline medium. Mixtures of BFS/SBA have been used for preparing alkali-activated mortars, by using NaOH (8 M solution), sodium silicate (8 M solution in Na+ and SiO2/Na2O molar ratio of 0.5) and KOH (8 M solution) as activating solutions. Replacements of 25%, 33% and 50% of BFS by SBA were carried out and compressive strengths in the range 16 51 MPa were obtained after 90 curing days. Microstructural studies demonstrated that the hydration products formed in the activation of BFS are not significantly affected by the presence of SBA in the mixture. The durability of alkali-activated mortars was compared to ordinary Portland cement (OPC) mortar in the following media: hydrochloric acid, acetic acid, ammonium chloride, sodium sulphate and magnesium sulphate. The behaviour of alkali-activated mortars with BFS and BFS/SBA was better than that found for plain OPC mortars, especially in ammonium chloride, acetic acid and sodium sulphate media. After 200 days of testing in ammonium chloride solution, the compressive strength loss for Portland cement mortar was about 83.3%. For the same test conditions, alkali-activated mortars presented a maximum reduction of 48.4%. The presence of SBA in alkali-activated BFS mortars did not produce any serious problems in durability. As a general conclusion, sugarcane bagasse ash (SBA) obtained by auto-combustion showed good cementing properties as a mineral precursor blended with blast furnace slag (BFS) in alkali-activated systems. es_ES
dc.description.sponsorship The Authors would like to thank the Ministerio de Educacion, Cultura y Deporte of Spain (Cooperacion Interuniversitaria Program with Brazil, Project PHB-2011-0016-PC), CAPES-Brazil (Project CAPES/DGU No. 266/12), CNPq (Project 401724/2013-1) and Electron Microscopy Service of the Universitat Politecnica de Valencia. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MECD/PHB-2011-0016-PC
dc.relation CAPES/DGU No. 266/12
dc.relation CNPq/401724/2013-1
dc.relation.ispartof Ceramics International es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Strength es_ES
dc.subject Alkali activation es_ES
dc.subject Blast furnace slag es_ES
dc.subject Sugarcane bagasse ash es_ES
dc.subject Durability es_ES
dc.subject Electron Microscopy Service of the UPV
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Mechanical and durability properties of alkali-activated mortar based on sugarcane bagasse ash and blast furnace slag es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.ceramint.2015.07.001
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 Pereira, A.; Akasaki, JL.; Melges, JL.; Mitsuuchi Tashima, M.; Soriano Martinez, L.; Borrachero Rosado, MV.; Monzó Balbuena, JM.... (2015). Mechanical and durability properties of alkali-activated mortar based on sugarcane bagasse ash and blast furnace slag. Ceramics International. 41:13012-13024. doi:10.1016/j.ceramint.2015.07.001 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.ceramint.2015.07.001 es_ES
dc.description.upvformatpinicio 13012 es_ES
dc.description.upvformatpfin 13024 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 41 es_ES
dc.relation.senia 306440 es_ES
dc.contributor.funder Ministerio de Educación
dc.contributor.funder Coordenaçao de Aperfeiçoamento de Pessoal de Nível Superior, Brasil
dc.contributor.funder Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasil


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