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Study of the binary system fly ash/sugarcane bagasse ash (FA/SCBA) in SiO2/K2O alkali-activated binders

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Study of the binary system fly ash/sugarcane bagasse ash (FA/SCBA) in SiO2/K2O alkali-activated binders

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dc.contributor.author CASTALDELLI, V.N. es_ES
dc.contributor.author Moraes, J.C.B es_ES
dc.contributor.author Akasaki, Jorge Luis es_ES
dc.contributor.author Pinheiro Melges, Jose Luis es_ES
dc.contributor.author Monzó Balbuena, José Mª es_ES
dc.contributor.author Borrachero Rosado, María Victoria es_ES
dc.contributor.author Soriano Martínez, Lourdes es_ES
dc.contributor.author Paya Bernabeu, Jorge Juan es_ES
dc.contributor.author Mitsuuchi Tashima, Mauro es_ES
dc.date.accessioned 2017-06-02T18:07:55Z
dc.date.available 2017-06-02T18:07:55Z
dc.date.issued 2016-06
dc.identifier.issn 0016-2361
dc.identifier.uri http://hdl.handle.net/10251/82283
dc.description.abstract Due environmental problems related to Portland cement consumption, many studies have been performed to diminish its use. One solution is the development of alkali-activated binders, which can decrease CO2 emissions and energy consumption by 70% when compared to Portland cement production. In addition, an alkali-activated binder presents mechanical properties similar to Portland cement mixtures, which turns into an interesting material in civil construction. Aluminosilicate-based materials are important raw materials to produce the alkali-activated binders. Therefore, two residues are presented as an aluminosilicate source in this study: fly ash (FA) and sugarcane bagasse ash (SCBA). Both residues were obtained from a combustion process to generate energy, the former from coal and the latter from the bagasse of the sugarcane industry. In addition, the alkaline activating solution is an important factor to achieve improved mechanical properties. In this context, this study investigated the influence of four different SiO2/K2O molar ratios (0, 0.36, 0.75 and 1.22) in the activating solution with a constant water content, and three FA/SCBA binder proportions (75/25, 50/50 and 25/75). Microstructural characterization was carried out by X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, mercury intrusion porosimetry, pH and electrical conductivity measurements to study the evolution of the reaction process. The compressive strength of mortars was assessed in order to determine the optimum SiO2/K2O molar ratio and FA/SCBA ratio. The tests showed that a SiO2/K2O molar ratio of 0.75 and FA/SCBA proportion of 75/25 provided the best mechanical properties. 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) and CNPq (process no 401724/2013-1). en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation CNPq (process n 401724/2013-1). es_ES
dc.relation CAPES Brazil (Project CAPES/DGU No. 266/12) es_ES
dc.relation Ministerio de Educación, Cultura y Deporte of Spain (Cooperación Interuniversitaria program with Brazil, Project PHB-2011-0016-PC) es_ES
dc.relation.ispartof Fuel es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Alternative binder es_ES
dc.subject Alkaline activation es_ES
dc.subject Waste es_ES
dc.subject Microstructure es_ES
dc.subject Compressive strength es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Study of the binary system fly ash/sugarcane bagasse ash (FA/SCBA) in SiO2/K2O alkali-activated binders es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.fuel.2016.02.020
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos - Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports 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.description.bibliographicCitation Castaldelli, V.; Moraes, J.; Akasaki, JL.; Pinheiro Melges, JL.; Monzó Balbuena, JM.; Borrachero Rosado, MV.; Soriano Martinez, L.... (2016). Study of the binary system fly ash/sugarcane bagasse ash (FA/SCBA) in SiO2/K2O alkali-activated binders. Fuel. 174:307-316. doi:10.1016/j.fuel.2016.02.020 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.fuel.2016.02.020 es_ES
dc.description.upvformatpinicio 307 es_ES
dc.description.upvformatpfin 316 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 174 es_ES
dc.relation.senia 324607 es_ES


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