Evaluación de la reología de pastas de cemento adicionadas con arcillas calcinadas y calizas en presencia de aditivos superplastificantes
dc.contributor.advisor | Lizarazo Marriaga, Juan Manuel | spa |
dc.contributor.advisor | Arango Londoño, Juan Fernando | spa |
dc.contributor.author | Velandia Larrotta, Henry Felipe | spa |
dc.contributor.researchgroup | Análisis, Diseño y Materiales Gies | spa |
dc.date.accessioned | 2025-02-03T15:27:35Z | |
dc.date.available | 2025-02-03T15:27:35Z | |
dc.date.issued | 2024 | |
dc.description | ilustraciones, diagramas, fotografías, tablas | spa |
dc.description.abstract | En el desarrollo de este trabajo se realizaron pruebas experimentales con el fin de determinar el comportamiento en estado fresco de pastas de cemento adicionadas con arcilla calcinada (cemento LC3) por medio de ensayos de reología. Por otra parte, se realizaron ensayos de caracterización como: densidad, finura, consistencia normal, tiempos de fraguado, minislump, fluidez y resistencia a la compresión con el fin de tener un mejor conocimiento del material estudiado y describir de manera detallada su comportamiento físico durante la primera hora de fraguado. La adición de arcilla calcinada y caliza en las pastas de cemento genera un aumento en la demanda de agua de la mezcla, aumenta el esfuerzo de fluencia y disminuye la viscosidad. En este sentido, se probaron aditivos superplastificante disponibles en el mercado nacional (Viscocrete 3100 y Sikaplast 5500) con el fin de evaluar su aporte para mejorar las propiedades en estado fresco. El aditivo Viscocrete 3100 generó una reducción en el esfuerzo de fluencia y en la viscosidad tanto en la mezcla de referencia como en las mezclas adicionadas durante la primera hora del fraguado. Además, el aditivo Sikaplast redujo el esfuerzo de fluencia y la viscosidad, y tiene la propiedad de conservar esta última propiedad física durante la primera hora del fraguado, lo cual es un aspecto para destacar para prevenir la posible segregación en la pasta de cemento (Texto tomado de la fuente). | spa |
dc.description.abstract | In the development of this project, experimental tests were conducted to determine the fresh-state behavior of cement pastes supplemented with calcined clay (LC3 cement) through rheology tests. Additionally, characterization tests such as density, fineness, normal consistency, setting times, mini-slump, flowability, and compressive strength were carried out to gain a better understanding of the material under study and to describe its physical behavior in detail during the first hour of setting. The addition of calcined clay and limestone to the cement pastes increases the water demand of the mixture, raises the yield stress, and decreases the viscosity. In this regard, superplasticizer additives available in the national market (Viscocrete 3100 and Sikaplast 5500) were tested to assess their contribution in improving fresh-state properties. The Viscocrete 3100 additive results in a reduction of both yield stress and viscosity in the reference mixture as well as in the supplemented mixtures during the first hour of setting. Furthermore, the Sikaplast additive reduces yield stress and viscosity, but it has the property of maintaining the latter physical property during the first hour of setting, which is noteworthy for preventing potential segregation in the cement paste. | eng |
dc.description.degreelevel | Maestría | spa |
dc.description.degreename | Magíster en Ingeniería - Estructuras | spa |
dc.description.methods | La metodología de este trabajo final de maestría está dividida en seis fases: 1. selección de materiales, plastificantes y definición de proporciones de mezcla; 2: definición del protocolo experimental del viscosímetro, 3: caracterización de los materiales, 4: ensayos previos, 5: ensayos definitivos y 6: consolidación y análisis de datos. En la Figura 5-1 se observa el esquema de las seis fases principales de la investigación, teniendo en cuenta el carácter experimental del trabajo final. | spa |
dc.description.notes | Contiene texto, ilustraciones, tablas | spa |
dc.description.researcharea | Materiales para estructuras | spa |
dc.format.extent | xxii, 165 páginas | spa |
dc.format.mimetype | application/pdf | spa |
dc.identifier.instname | Universidad Nacional de Colombia | spa |
dc.identifier.reponame | Repositorio Institucional Universidad Nacional de Colombia | spa |
dc.identifier.repourl | https://repositorio.unal.edu.co/ | spa |
dc.identifier.uri | https://repositorio.unal.edu.co/handle/unal/87436 | |
dc.language.iso | spa | spa |
dc.publisher | Universidad Nacional de Colombia | spa |
dc.publisher.branch | Universidad Nacional de Colombia - Sede Bogotá | spa |
dc.publisher.faculty | Facultad de Ingeniería | spa |
dc.publisher.place | Bogotá, Colombia | spa |
dc.publisher.program | Bogotá - Ingeniería - Maestría en Ingeniería - Estructuras | spa |
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dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
dc.rights.license | Atribución-NoComercial-SinDerivadas 4.0 Internacional | spa |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | spa |
dc.subject.ddc | 690 - Construcción de edificios::691 - Materiales de construcción | spa |
dc.subject.decs | Plasticity | eng |
dc.subject.decs | Materials - fatigue | eng |
dc.subject.lemb | FLUENCIA DE METALES | spa |
dc.subject.lemb | Creep of metals | eng |
dc.subject.lemb | PLASTICIDAD | spa |
dc.subject.lemb | SUPERPLASTICIDAD | spa |
dc.subject.lemb | Superplasticity | eng |
dc.subject.lemb | ARCILLA | spa |
dc.subject.lemb | Clay | eng |
dc.subject.lemb | FATIGA DE MATERIALES | spa |
dc.subject.proposal | Reología | spa |
dc.subject.proposal | Arcillas Calcinadas | spa |
dc.subject.proposal | Cementos LC3 | spa |
dc.subject.proposal | Superplastificantes | spa |
dc.subject.proposal | Cementos adicionados | spa |
dc.subject.proposal | Rheology | eng |
dc.subject.proposal | Calcined Clays | eng |
dc.subject.proposal | LC3 Cements | eng |
dc.subject.proposal | Superplasticizers | eng |
dc.subject.proposal | Supplemented Cements | eng |
dc.title | Evaluación de la reología de pastas de cemento adicionadas con arcillas calcinadas y calizas en presencia de aditivos superplastificantes | spa |
dc.title.translated | Evaluation of the rheology of cement pastes added with calcined clays and limestones in the presence of superplasticizing additives | eng |
dc.type | Trabajo de grado - Maestría | spa |
dc.type.coar | http://purl.org/coar/resource_type/c_bdcc | spa |
dc.type.coarversion | http://purl.org/coar/version/c_ab4af688f83e57aa | spa |
dc.type.content | Text | spa |
dc.type.driver | info:eu-repo/semantics/masterThesis | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/TM | spa |
dc.type.version | info:eu-repo/semantics/acceptedVersion | spa |
dcterms.audience.professionaldevelopment | Estudiantes | spa |
dcterms.audience.professionaldevelopment | Investigadores | spa |
dcterms.audience.professionaldevelopment | Público general | spa |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 | spa |
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