Utilización de áridos reciclados en la Empresa de Prefabricado Industrial de Villa Clara, para la fabricación de hormigón hidráulico
Fecha
2012-07-04
Autores
Llanez Pérez, Lisandra
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Editor
Universidad Central "Marta Abreu" de las Villas
Resumen
El presente trabajo tiene la intención de estudiar la sustitución parcial de áridos gruesos naturales por árido grueso reciclado (RCA, según siglas en inglés recycled concrete aggregate). La finalidad de la investigación es proponer hasta qué por ciento se puede sustituir el árido grueso por estos RCA para obtener hormigones de 25MPa para ser utilizado en la propia planta objeto de esta investigación. Para ello se obtuvo el material reciclado de la trituración de piezas de paneles de hormigón no conformes de la Planta de Prefabricado IMS, ubicada en Santa Clara, Cuba. Se realizó un estudio de las propiedades físicas y mecánicas del material reciclado, para su empleo en la fabricación de hormigón. Sustituyendo un 10, 20 y 30% del árido grueso natural por el RCA, analizando así su comportamiento físico y mecánico del hormigón hidráulico fabricado a diferentes edades.
Concluyendo que en el entorno de sustitución estudiado se mantuvo una ganancia en resistencia a compresión, siempre creciente en comparación con la muestra patrón.
Mientras que la absorción se comportó de manera favorable en comparación con la muestra patrón.
Con el empleo de dicho material se amplía la perspectiva del uso de áridos reciclados e impulsa la utilización de materiales de construcción no convencionales, buscando soluciones a problemas de la sociedad al elaborar nuevos hormigones sustituyendo parcialmente el consumo de materias primas escasas o no renovables ubicadas en sitios distantes, reduciendo el incremento de costos que ello conlleva y aportando a la innovación y desarrollo, con el consecuente beneficio económico y alto impacto social y ecológico.
This paper intends to study the partial replacement of natural coarse aggregate by recycled coarse aggregate (RCA, as English acronym recycled concrete aggregate). The purpose of this research is to propose what percent can be replaced by these RCA coarse aggregate for concrete of 25MPa for use in the plant under investigation. This recycled material was obtained from crushed pieces of concrete panels nonconforming IMS Precast Plant, located in Santa Clara, Cuba. We performed a study of the physical and mechanical properties of recycled material, for use in the manufacture of concrete. Replacing a 10, 20 and 30% of natural coarse aggregate RCA, and analyzing their physical and mechanical behavior of hydraulic concrete manufactured at different ages. Concluded that the studied substitution environment was maintained in a compressive strength gain, always increasing in comparison to the standard sample. While the absorption acted favorably in comparison with the standard sample. With the use of such material extends the perspective of the use of recycled aggregates and promotes the use of unconventional building materials, seeking solutions to problems of society in developing new concrete partially substituting the consumption of scarce raw materials or renewable located in distant sites, reducing the increased costs that this entails and contributing to innovation and development, with consequent economic benefit and high social and environmental impact.
This paper intends to study the partial replacement of natural coarse aggregate by recycled coarse aggregate (RCA, as English acronym recycled concrete aggregate). The purpose of this research is to propose what percent can be replaced by these RCA coarse aggregate for concrete of 25MPa for use in the plant under investigation. This recycled material was obtained from crushed pieces of concrete panels nonconforming IMS Precast Plant, located in Santa Clara, Cuba. We performed a study of the physical and mechanical properties of recycled material, for use in the manufacture of concrete. Replacing a 10, 20 and 30% of natural coarse aggregate RCA, and analyzing their physical and mechanical behavior of hydraulic concrete manufactured at different ages. Concluded that the studied substitution environment was maintained in a compressive strength gain, always increasing in comparison to the standard sample. While the absorption acted favorably in comparison with the standard sample. With the use of such material extends the perspective of the use of recycled aggregates and promotes the use of unconventional building materials, seeking solutions to problems of society in developing new concrete partially substituting the consumption of scarce raw materials or renewable located in distant sites, reducing the increased costs that this entails and contributing to innovation and development, with consequent economic benefit and high social and environmental impact.
Descripción
Palabras clave
Áridos Reciclados, Empresa de Prefabricado Industrial de Villa Clara, Fabricación de Hormigón Hidráulico, Planta de Prefabricado IMS, Propiedades Físicas y Mecánicas, Physical Properties