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dc.contributor.authorGordillo Suárez, Marisolspa
dc.contributor.authorRodríguez, Erich Dspa
dc.contributor.authorMejía de Gutíerrez, Rubyspa
dc.coverage.spatialUniversidad Autónoma de Occidente. Calle 25 115-85. Km 2 vía Cali-Jamundíspa
dc.date.accessioned2020-02-12T18:50:51Zspa
dc.date.available2020-02-12T18:50:51Zspa
dc.date.issued201401spa
dc.identifier.citationGordillo, Marisol; Rrodriguez, Erich D y Mejía de Gutiérrez, Ruby. Optimización de la resistencia mecánica de cementos binarios MK/GBFS activados alcalinamente por Metodología de Superficie de Respuesta. En: Ingeniería y Ciencia. volumen 10, número 19, (enero-junio de 2014); páginas 197-220. ISSN 1794-9165spa
dc.identifier.issnimpreso: 17949165spa
dc.identifier.issnonline: 22564314spa
dc.identifier.urihttp://red.uao.edu.co//handle/10614/11867spa
dc.description.abstractThe present article shows the compressive strength modeling and optimization for a non-conventional binder free of clinker, which was produced by the alkali activation of a binary mixture of metakaolin (MK) and a granulated blast furnace slag (GBFS). A GBFS/(GBFS+MK) ratio between 0,0 and 0,8; and the overall SiO2⁄Al2O3 molar ratio from 2,8 to 4,2 were considered as the main factor of this study. Sodium hydroxide and sodium silicate were used as alkali activator. The overall SiO2⁄Al2O3 molar ratio corresponds to the silica and alumina contribution from the precursor (MK+GBFS), as well as the alkali activator used. The statistical assessment through response surface methodology (MSR) showed a considerable effect between the SiO2⁄Al2O3 molar ratio, GBFS content and the compressive strength. Complementary, a microstructural characterization of the materials produced through X-ray diffraction (XRD) and scanning electron microscopy (SEM) was performed. The GBFS inclusion leads to an increasing of reaction kinetic and the formation of a more compact structure. These new reaction products gives to the material a higher mechanical performance than those based on a 100% of MK. The study shows the performance prediction in materials with 7 days of curing through the adjustment of some design criteria in order to obtain a binder with a particular mechanical performance.eng
dc.description.abstractEl presente artículo muestra la modelación y optimización de la resistencia a la compresión de un conglomerante no convencional libre de cemento Portland, el cual fue producido a partir de la activación alcalina de una mezcla binaria de un metacaolín (MK) y una escoria siderúrgica de alto horno (GBFS). Como factores de estudio se consideró una relación GBFS/(GBFS/MK) entre 0,0-0,8 y una relación molar total SiO2⁄Al2O3 entre 2,8-4,2. La relación SiO2⁄Al2O3 fue ajustada a través de la contribución del precursor (MK+GBFS) y el activador alcalino. La evaluación estadística mediante la metodología de superficie de respuesta (MSR) mostró un efecto significativo entre la relación molar SiO2=Al2O3 y el contenido de GBFS sobre la resistencia a compresión. Complementariamente se desarrolló una caracterización microestructural a través de difracción de rayos X y microscopía electrónica de barrido. La incorporación de GBFS incrementó la cinética de reacción y la formación de una estructura más densa y compacta. Estos nuevos productos de reacción le otorgaron al material un mayor desempeño mecánico comparado con los constituidos con un 100% de MK.spa
dc.formatapplication/pdfspa
dc.format.extentpáginas 197–220spa
dc.language.isospaspa
dc.publisherUniversidad EAFITspa
dc.relationIngeniería y Ciencia. volumen 10, número 19, (enero-junio de 2014); páginas 197-220. ISSN 1794-9165spa
dc.rightsDerechos Reservados - Universidad Autónoma de Occidentespa
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/spa
dc.sourcereponame:Repositorio Institucional UAOeng
dc.sourceinstname:Universidad Autónoma de Occidentespa
dc.subjectGranulated blast furnace slageng
dc.subjectAlkali-activated binderseng
dc.subjectCompressive strengtheng
dc.subjectResponse surface methodologyeng
dc.subjectEscoria siderúrgica de alto hornospa
dc.subjectMetacaolínspa
dc.subjectCementos de activación alcalinaspa
dc.subjectResistencia a la compresiónspa
dc.subjectMetodología de superficie de respuestaspa
dc.titleOptimización de la resistencia mecánica de cementos binarios MK/GBFS activados alcalinamente por Metodología de Superficie de Respuestaspa
dc.title.alternativeMechanical Strength Optimization of Alkali-Activated MK/GBFS Binary Cements Through the Response Surface Methodologyeng
dc.typeArtículo de revistaspa
dc.subject.armarcResistencia de materialesspa
dc.subject.armarcStrength of materialseng
dc.relation.referencesA. Purdon, “The action of alkalis on blast-furnace slag”, Journal of the Society of Chemical Industry, vol. 59, pp. 191-202, 1940.eng
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.creativecommonsAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)spa
dc.type.coarhttp://purl.org/coar/resource_type/c_6501spa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/articlespa
dc.type.redcolhttp://purl.org/redcol/resource_type/ARTREFspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85spa
dc.type.versioninfo:eu-repo/semantics/publishedVersionspa
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