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Influence of sugar cane straw ash in metakaolin-based geopolymers

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Influence of sugar cane straw ash in metakaolin-based geopolymers

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dc.contributor.author Moraes, J.C.B es_ES
dc.contributor.author Moraes, M.J.B. es_ES
dc.contributor.author Batista, J.P.B. es_ES
dc.contributor.author Akasaki, J.L. es_ES
dc.contributor.author Font, A. es_ES
dc.contributor.author Tashima, M.M. es_ES
dc.contributor.author Soriano Martinez, Lourdes es_ES
dc.contributor.author Borrachero Rosado, María Victoria es_ES
dc.contributor.author Payá, J. es_ES
dc.date.accessioned 2024-10-03T18:25:03Z
dc.date.available 2024-10-03T18:25:03Z
dc.date.issued 2024-09-20 es_ES
dc.identifier.issn 0950-0618 es_ES
dc.identifier.uri http://hdl.handle.net/10251/209247
dc.description.abstract [EN] The present investigation studied the use of agro-industrial waste, sugar cane straw ash (SCSA), to partially replace commercial metakaolin (MK) in geopolymers (0 %, 15 %, 30 %, and 45 % percentages of substitution by mass). The study presented solid precursors characterization, microstructural studies of pastes, and compressive strength of mortars assessed between 1 and 90 days of curing at 25 degrees C. The chemical composition of MK was mainly based on SiO2 2 (54.1 wt%) and Al2O3 2 O 3 (35.9 wt%), and SCSA was mainly composed of SiO2 2 (58.6 wt%). Microstructural studies of pastes showed that occurred a formation of N-A-S-H amorphous reaction products and no crystalline phases were formed; SCSA contributed to the formation of geopolymer reaction products as a secondary role to the main reaction of MK; the presence of SCSA slightly increased the porosity and did not excessively modify the pore distribution; and the pastes with SCSA presented a heterogeneous microstructure. The compressive strength of mortars reached values over 50 MPa after 90 days of curing. Therefore, SCSA was a sustainable replacement for MK in producing geopolymers. es_ES
dc.description.sponsorship This work was supported by the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [grant number 153164/2016-6] for scholarship to J.C.B. Moraes; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [grant number 401724/2013-1] ; and the "Ministerio de Educacion, Cultura y Deporte" of Spain ("Cooperacion Interuniversitaria" program with Brazil) [grant number PHB-2011-0016-PC] . Finally, M.M. Tashima wishes to thank the Spanish Ministry of Universities and the Universitat Politecnica de Valencia for the grant "Maria Zambrano for attraction of international talent", funded by European Union-Next Generation. 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 Materials characterization es_ES
dc.subject Microstructure es_ES
dc.subject Compressive strength es_ES
dc.subject Agro-industrial waste es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Influence of sugar cane straw ash in metakaolin-based geopolymers es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.conbuildmat.2024.137835 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/CNPq//401724%2F2013-1/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/CNPq//153164%2F2016-6/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MECD//PHB-2011-0016-PC//Nuevos conglomerantes basados en la activación alcalina de cenizas de bagazo y de hoja de caña de azúcar/ es_ES
dc.rights.accessRights Cerrado 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.description.bibliographicCitation Moraes, J.; Moraes, M.; Batista, J.; Akasaki, J.; Font, A.; Tashima, M.; Soriano Martinez, L.... (2024). Influence of sugar cane straw ash in metakaolin-based geopolymers. Construction and Building Materials. 444. https://doi.org/10.1016/j.conbuildmat.2024.137835 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.conbuildmat.2024.137835 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 444 es_ES
dc.relation.pasarela S\525632 es_ES
dc.contributor.funder European Commission es_ES
dc.contributor.funder Ministerio de Universidades es_ES
dc.contributor.funder Universitat Politècnica de València es_ES
dc.contributor.funder Ministerio de Educación, Cultura y Deporte es_ES
dc.contributor.funder Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brasil es_ES


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