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Geopolymer Designed with Pumice Stone from Ecuador

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Geopolymer Designed with Pumice Stone from Ecuador

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dc.contributor.author Andrade, Alexis es_ES
dc.contributor.author Castillo, Tito es_ES
dc.contributor.author Paredes, Marcel es_ES
dc.contributor.author Gimenez-Carbo, Ester es_ES
dc.contributor.author García, Victor es_ES
dc.date.accessioned 2023-02-13T19:00:41Z
dc.date.available 2023-02-13T19:00:41Z
dc.date.issued 2022 es_ES
dc.identifier.issn 2332-1091 es_ES
dc.identifier.uri http://hdl.handle.net/10251/191804
dc.description.abstract [EN] The present investigation focuses on the creation of a geopolymer, using pumice stone from Ecuador as a precursor material. The chemical composition of the pumice and the alkaline activation of the geopolymer with NaOH and Na2SiO3 were validated through a multi-criteria analysis that was used to identify the best mine among the ones located in Cotopaxi, Chimborazo, and Tungurahua states. Through laboratory tests, it was obtained that the best pumice stone had the presence of aluminum oxide and silicon in its composition, as well as amorphous particles, with a size of 40 to 50µm. The percentage of aluminum that was found in the mines of Cotopaxi, Imbabura, and Tungurahua states was 0.60%, 0.68%, and 1.50% respectively. In the fineness modulus tests, it stands out that more than 80% passes the 75µm sieve. In regards to the activation of the geopolymer, the average resistance of the deposits was Cotopaxi 22.60 MPa, Imbabura 23.03 MPa, and Tungurahua 23.03 MPa. In the geopolymer concrete, the average resistance values of each of the deposits were: Cotopaxi 4.21 MPa, Imbabura 8.05 MPa, and Tungurahua 8.67 MPa. The multicriteria analysis showed that the best option to create geopolymer concrete comes from the mine located in Tungurahua. It should be noted that the increase in NaOH concentration, maintaining the ratio of 2.4 in geopolymer cubes between Na2SiO3/NaOH as an activating solution, induces an increase in compressive strength. The concrete made from the Tungurahua mine, made up of 50% geopolymer and 50% aggregates. It is the one that showed the best properties with a compressive strength of 16.16 MPa, cured in an oven for 24 hours and at a temperature of 80°C. The design of geopolymer concrete that replaces the use of portland cement is the first step to reduce the pollution produced by hydraulic cement. es_ES
dc.language Inglés es_ES
dc.publisher Horizon Research Publishing es_ES
dc.relation.ispartof Civil Engineering and Architecture es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Geopolymer es_ES
dc.subject Pumice es_ES
dc.subject Solution es_ES
dc.subject Concrete es_ES
dc.subject Resistance es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Geopolymer Designed with Pumice Stone from Ecuador es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.13189/cea.2022.100513 es_ES
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.description.bibliographicCitation Andrade, A.; Castillo, T.; Paredes, M.; Gimenez-Carbo, E.; García, V. (2022). Geopolymer Designed with Pumice Stone from Ecuador. Civil Engineering and Architecture. 10(5):1864-1880. https://doi.org/10.13189/cea.2022.100513 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.13189/cea.2022.100513 es_ES
dc.description.upvformatpinicio 1864 es_ES
dc.description.upvformatpfin 1880 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 10 es_ES
dc.description.issue 5 es_ES
dc.relation.pasarela S\469839 es_ES
dc.subject.ods 09.- Desarrollar infraestructuras resilientes, promover la industrialización inclusiva y sostenible, y fomentar la innovación es_ES
dc.subject.ods 12.- Garantizar las pautas de consumo y de producción sostenibles es_ES
dc.subject.ods 13.- Tomar medidas urgentes para combatir el cambio climático y sus efectos es_ES


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