Evaluación de las combinaciones del bioproducto CBQ-VTC y el aditivo comercial Dynamon SX-32 sobre la retracción autógena en hormigones
Fecha
2016-07-02
Autores
Ruiz Ferrer, Reinier
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Editor
Universidad Central “Marta Abreu” de Las Villas. Facultad de Construcciones. Departamento de Ingeniería Civil
Resumen
Los altos costos y la monopolización del mercado de aditivos químicos, se torna a nivel mundial como una problemática para la industria de la construcción en países de poco desarrollo. Cuba en su afán de sustituir productos de altos costos, ha implementado variantes de producción de aditivos a base de microorganismos eficientes; se han desarrollado investigaciones con productos con base de fermentación microbiana como es el caso del bioproducto Microorganismo Eficiente Finlay (MEF-32) y el Viscoso-Tenso Activo Controlador de la Retracción, producido en el Centro de Bioactivos Químicos (CBQ-VTC). En el caso del MEF-32 se realizaron estudios sobre las propiedades que poseía como aditivo bioplastificante y en el presente trabajo se evalúo las propiedades del mismo como un tenso activo, controlador de la retracción en hormigones. Para ello, se realizaron combinaciones del bioproducto CBQ-VTC al 2%,3% y 4% y el aditivo comercial Dynamon SX-32 al 0,95% y 0,6%, comparándolo con el aditivo comercial Shrinko-tec nano 4 al 1.1% del peso de cemento. El trabajo se realiza en tres etapas fundamentales: en la primera etapa se procede a la elaboración de las dosificaciones a emplear en las muestras; en la segunda se realizan los ensayos definidos en el diseño de experimento, resistencia a compresión, retracción según la ASTM-C- 157 y el canal de retracción, donde se evalúo las características reductoras de la retracción de cada producto; en la tercera se realiza un análisis cualitativo y cuantitativo de los resultados. Los resultados de estos ensayos contribuyen al avance y consolidación del uso de la tecnología de aditivos a base de ME en hormigones y forma parte de la caracterización del bioproducto CBQ-VTC como un bioproducto con propiedades reductoras de la retracción en hormigones.
High costs and market monopolization chemical additives becomes globally as a problem for the construction industry in countries of little development. Cuba in an effort to replace high-cost products, has implemented additives production variants based on efficient microorganisms,developing researchs with products based on microbial fermentation such as the bioproduct Efficient Microorganism Finlay (MEF-32) and Viscous-Tense Active Controller of Retraction produced in the Chemical Bioactive Center (CBQ-VTC). In the case of MEF-32, some studies were developed about its bioplastificante additive properties. In this paper, were evaluated its properties as an active tense, controller shrinkage in concretes. For this purpose, were made bioproduct combinations CBQ-VTC at 2%, 3% and 4% and commercial additive Dynamon SX-32, 0.95% and 0.6%, compared with nano-tec Shrinko commercial additive 4 1.1% of the cement weight. This work was carried out in three main stages, in the first stage was proceed to the preparation of dosages to be used in the preparation of samples; in the second stage, were made the defined tests in the experimental design, compressive strength, shrinkage according to ASTM C- 157 and channel retraction, where the reducing shrinkage characteristics of each product tested; in the third stage, was performed a qualitative and quantitative analysis of the results. The results of these tests contributed to the advancement and consolidation of the use of technology of additives based on ME in concrete and it is a part of the characterization of bioproduct CBQ-VTC as a byproduct with reducing shrinkage properties of concrete.
High costs and market monopolization chemical additives becomes globally as a problem for the construction industry in countries of little development. Cuba in an effort to replace high-cost products, has implemented additives production variants based on efficient microorganisms,developing researchs with products based on microbial fermentation such as the bioproduct Efficient Microorganism Finlay (MEF-32) and Viscous-Tense Active Controller of Retraction produced in the Chemical Bioactive Center (CBQ-VTC). In the case of MEF-32, some studies were developed about its bioplastificante additive properties. In this paper, were evaluated its properties as an active tense, controller shrinkage in concretes. For this purpose, were made bioproduct combinations CBQ-VTC at 2%, 3% and 4% and commercial additive Dynamon SX-32, 0.95% and 0.6%, compared with nano-tec Shrinko commercial additive 4 1.1% of the cement weight. This work was carried out in three main stages, in the first stage was proceed to the preparation of dosages to be used in the preparation of samples; in the second stage, were made the defined tests in the experimental design, compressive strength, shrinkage according to ASTM C- 157 and channel retraction, where the reducing shrinkage characteristics of each product tested; in the third stage, was performed a qualitative and quantitative analysis of the results. The results of these tests contributed to the advancement and consolidation of the use of technology of additives based on ME in concrete and it is a part of the characterization of bioproduct CBQ-VTC as a byproduct with reducing shrinkage properties of concrete.
Descripción
Palabras clave
Combinaciones del Bioproducto CBQ-VTC, Aditivo Comercial Dynamon SX-32, Retracción Autógena en Hormigones