Influencia de las cenizas de cascarilla de arroz como reemplazo parcial del cemento utilizado para la elaboración del concreto: una revisión de literatura
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Universidad Santo Tomás. Seccional Bucaramanga
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La inclusión de cenizas vegetales dentro de una mezcla de concreto ha ganado una gran aceptación, producto del incremento en las propiedades físicas y mecánicas que ofrece. Ante ello, la presente investigación tuvo como objetivo ofrecer una revisión sistemática de literatura sobre la influencia de las cenizas de cascarilla de arroz (CCA) como reemplazo parcial del cemento utilizado para la elaboración del concreto durante los años 2007-2022. En esta revisión de literatura se utilizaron 40 fuentes debidamente seleccionadas con rugosidad académica y científica obtenidas de bases de datos confiables; por lo que se ordenaron según las propiedades intervenidas y sus respectivos resultados, la relación agua/cemento+CCA y el comportamiento del concreto al aumentar el porcentaje de las CCA. En el análisis de la resistencia a la compresión y tracción, se obtuvo que la proporción adecuada de reemplazo es de 15% con una relación agua:cemento+CCA al 0.50, la cual fue añadida de forma molida y sin elementos puzolánicos extra. En torno a la trabajabilidad, la proporción de reemplazo continúa en ese mismo rango (5%-15%), controlando a su vez el descenso del valor del slump con un adecuado uso de aditivos superplastificantes y una correcta granulometría del agregado. En términos generales, la incorporación de las CCA como reemplazo parcial del cemento debe ir acompañada de una buena caracterización y preparación de los especímenes, un correcto diseño de mezcla y procedimientos de ensayos de laboratorio que permitan tener una aceptable confiabilidad y certeza en la interpretación de los resultados.
The inclusion of vegetable ash in a concrete mix has gained wide acceptance due to the increase in physical and mechanical properties it offers. Therefore, the objective of this research was to offer a systematic literature review on the influence of rice husk ash (RHA) as a partial replacement of cement used in the production of concrete during the years 2007-2022. In this literature review, 40 sources duly selected with academic and scientific roughness obtained from reliable databases were used; therefore, they were ordered according to the properties intervened and their respective results, the water/cement+CCA ratio and the behavior of concrete when increasing the percentage of CCA. In the analysis of compressive and tensile strength, it was obtained that the adequate replacement proportion is 15% with a water:cement+CCA ratio of 0.50, which was added in milled form and without extra pozzolanic elements. In terms of workability, the replacement proportion continues in the same range (5%-15%), while controlling the decrease in the slump value with an adequate use of superplasticizing additives and a correct aggregate granulometry. In general terms, the incorporation of CCA as a partial replacement of cement should be accompanied by a good characterization and preparation of the specimens, a correct mix design and laboratory testing procedures that allow an acceptable reliability and certainty in the interpretation of the results.
The inclusion of vegetable ash in a concrete mix has gained wide acceptance due to the increase in physical and mechanical properties it offers. Therefore, the objective of this research was to offer a systematic literature review on the influence of rice husk ash (RHA) as a partial replacement of cement used in the production of concrete during the years 2007-2022. In this literature review, 40 sources duly selected with academic and scientific roughness obtained from reliable databases were used; therefore, they were ordered according to the properties intervened and their respective results, the water/cement+CCA ratio and the behavior of concrete when increasing the percentage of CCA. In the analysis of compressive and tensile strength, it was obtained that the adequate replacement proportion is 15% with a water:cement+CCA ratio of 0.50, which was added in milled form and without extra pozzolanic elements. In terms of workability, the replacement proportion continues in the same range (5%-15%), while controlling the decrease in the slump value with an adequate use of superplasticizing additives and a correct aggregate granulometry. In general terms, the incorporation of CCA as a partial replacement of cement should be accompanied by a good characterization and preparation of the specimens, a correct mix design and laboratory testing procedures that allow an acceptable reliability and certainty in the interpretation of the results.
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Cement, Rice husk ashes, Concrete, Compressive strength, Workability, Tensile strength, Pozzolanic elements, Cemento, Cenizas de cascarilla de arroz, Concreto, Resistencia a la compresión, Trabajabilidad, Resistencia a la tracción, Elementos puzolánicos
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