Estudios de reología de hormigones fluidos de 35MPa producidos con el bioproducto CBQ-VTC y el aditivo químico SRC 20
Fecha
2017-06
Autores
Fadraga Alvarez, Jhonny
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Editor
Universidad Central "Marta Abreu" de Las Villas. Facultad de Construcciones. Departamento de Ingeniería Civil.
Resumen
Uno de los principales problemas del proceso constructivo en Cuba es el uso de aditivos debido a sus altos costos en el mercado mundial. Una de las alternativas que se están investigando en este momento para sustituir los aditivos comerciales, se basa en el estudio de un aditivo plastificante de origen biológico, denominado CBQ-VTC, el cual se ha analizado en estudios anteriores dirigidos por el Centro de Investigación y Desarrollo de Estructuras y Materiales (CIDEM). Precisamente la siguiente investigación se basa en el estudio y evaluación del aditivo de origen biológico CBQ-VTC y el aditivo químico SRC 20. El proceso contó con una primera etapa experimental en la que se evaluó la influencia de los productos utilizando CBQ-VTC, al 2%, 3% y al 4% y el aditivo químico SRC 20, al 0.5% y 0.8%, en el asentamiento, cantidad de aire contenido en la mezcla, tiempos de fraguado, resistencia a los 7 y 28 días, permeabilidad y absorción capilar. Con la presente investigación se evalúa el efecto que tiene el aditivo biológico CBQ-VTC en las propiedades reológicas de los hormigones, con el fin de ofrecer un producto capaz de sustituir el uso de aditivos extranjeros.
One of the main problems of the construction process in Cuba is the use of additives due to costs high in the world market. One of the alternatives that are being investigated at this time to replace the commercial additives, is based on the study of a plasticizer additive of biological origin, called as CBQ-VTC, which has been discussed in previous study conducted by the Center for Research and Development of Structures and Materials (ICW). Precisely the following research is based on the study and evaluation of the additive CBQ-VTC biological origin and the chemical additive SRC 20 . The process was a first experimental phase in which the influence of the products using CBQ-VTC, 2%, 3% and 4% chemical additives SRC20, 0.5% and 0.8%, in the settlement, air content, setting time, was evaluated resistance at seven and twenty-eight days, water absorption by capillarity, and permeability. With the present investigation is to assess the effect of the additive CBQ.VTC in the rheological properties of concrete, in order to offer a product able to replace the use of foreign additives.
One of the main problems of the construction process in Cuba is the use of additives due to costs high in the world market. One of the alternatives that are being investigated at this time to replace the commercial additives, is based on the study of a plasticizer additive of biological origin, called as CBQ-VTC, which has been discussed in previous study conducted by the Center for Research and Development of Structures and Materials (ICW). Precisely the following research is based on the study and evaluation of the additive CBQ-VTC biological origin and the chemical additive SRC 20 . The process was a first experimental phase in which the influence of the products using CBQ-VTC, 2%, 3% and 4% chemical additives SRC20, 0.5% and 0.8%, in the settlement, air content, setting time, was evaluated resistance at seven and twenty-eight days, water absorption by capillarity, and permeability. With the present investigation is to assess the effect of the additive CBQ.VTC in the rheological properties of concrete, in order to offer a product able to replace the use of foreign additives.
Descripción
Palabras clave
Aditivo Químico SRC 20, Aditico Biológico CBQ-VTC, Propiedades Reológicas de Hormigones