Aditivos a base de Microorganismos Eficientes en la fabricación de Traviesas de Hormigón
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Fecha
2015-07-04
Autores
Gómez León, Ernesto
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Editor
Universidad Central "Marta Abreu" de las Villas
Resumen
El presente trabajo constituye una investigación de carácter teórico – práctico sobre la
utilización del bioproducto MEF-32, como aditivo viscosificante en la producción de
traviesas de hormigón en la Empresa Industrial de Instalaciones Fijas (EIIF), este
trabajo tiene como principal objetivo la evaluación de la influencia del bioproductoMEF -32 y su combinación con un aditivo comercial sobre las propiedades reológicas y físico
– mecánicas de los hormigones utilizados para la fabricación de traviesas, así como su
influencia sobre los procesos tecnológicos de obtención de traviesas de hormigón.
La investigación estuvo centrada fundamentalmente en tres cuestiones: una primera de
tipo teórica y bibliográfica donde se aborda el las últimas tendencias sobre la temática,
los conceptos y principios generales. En una segunda etapa se estudia la influencia del
bioproducto MEF- 32 así como su combinación con un aditivo comercial en hormigones
de consistencia seca. Se realiza la certificación del mismo para su uso en ho rmigones
para la fabricación de traviesas, sustituyendo los plastificantes tradicionales.
Se establecen los parámetros tecnológicos para su utilización (Tiempo de curado y
dosificación).Finalmente se evaluó el comportamiento del bioproducto MEF – 32
mediante un estudio de caso en la planta de fabricación de traviesas de hormigón
(EIIF) a escala industrial.
Se aplicó un grupo de técnicas instrumentales y analíticas de investigación, como
evaluación y análisis de la consistencia del hormigón utilizando el consistómetro Vebe,
se realizaron los ensayos de resistencia a compresión a las edades de 7h, 24h, 7 días
y 28 días y % de absorción a los 28 días.
Se demuestra que cuando dicho aditivo es utilizado en combinación con un
superplastificante comercial, en este caso se emplea el N200 y teniendo en cuenta sus
dosificaciones se alcanzan los valores más adecuados para la producción de
hormigones de consistencia seca.
This piece of writing is just a theoretical – practical research on the use of the bioproduct MEF-32 as additive that increases viscosity in the concrete railroad ties production that take place in the Empresa Industrial de Instalaciones Fijas (EIIF). This work has as main objective the assessment of the influence of this bio-product itself and also in combination with a commercial additive on the rheological, physical and mechanical properties of the concrete use in the production of railroad ties as well as the influence of this additive on technological processes to obtain concrete railroad ties. We focus the research in three main aspects: the first had a theoretical and bibliographical nature used to depict the state of the art in this field as well as the general concepts and principles. The second is centered in the study of the influence of the already mentioned bio-product itself or in combination with other commercial additives on dry consistency concrete. The third is just certifying the product for future use with concrete on the production of railroad ties to substitute traditional plasticizers. We also establish the technological parameters for its use (curing time y mixture design). Finally, the behavior of this bio-product was assessed by analyzing the case of the factory of concrete railroad ties (EIIF) on industrial scale. We applied a group of instrumental and analytical techniques of research such as: the assessment and analysis of concrete consistency using the Vebe consistometer, carrying out of trials of compression strength at 7 hours, 24 hours, 7 days, and 28 days and also the implementation of trails to determine the percentage of absorption after 28 days. It’s been proved that this additive when used in combination with commercial superplasticizer in this case the N200 and taking into consideration the mixture design, we reached suitable values to produce dry consistency concrete.
This piece of writing is just a theoretical – practical research on the use of the bioproduct MEF-32 as additive that increases viscosity in the concrete railroad ties production that take place in the Empresa Industrial de Instalaciones Fijas (EIIF). This work has as main objective the assessment of the influence of this bio-product itself and also in combination with a commercial additive on the rheological, physical and mechanical properties of the concrete use in the production of railroad ties as well as the influence of this additive on technological processes to obtain concrete railroad ties. We focus the research in three main aspects: the first had a theoretical and bibliographical nature used to depict the state of the art in this field as well as the general concepts and principles. The second is centered in the study of the influence of the already mentioned bio-product itself or in combination with other commercial additives on dry consistency concrete. The third is just certifying the product for future use with concrete on the production of railroad ties to substitute traditional plasticizers. We also establish the technological parameters for its use (curing time y mixture design). Finally, the behavior of this bio-product was assessed by analyzing the case of the factory of concrete railroad ties (EIIF) on industrial scale. We applied a group of instrumental and analytical techniques of research such as: the assessment and analysis of concrete consistency using the Vebe consistometer, carrying out of trials of compression strength at 7 hours, 24 hours, 7 days, and 28 days and also the implementation of trails to determine the percentage of absorption after 28 days. It’s been proved that this additive when used in combination with commercial superplasticizer in this case the N200 and taking into consideration the mixture design, we reached suitable values to produce dry consistency concrete.
Descripción
Palabras clave
Microorganismos Eficientes, Fabricación de Traviesas de Hormigón, Bioproducto MEF-32, Empresa Industrial de Instalaciones Fijas (EIIF), Parámetros Tecnológicos, Parameters, Technology