Ceniza del bagazo de caña de azúcar para mejorar la resistividad y resistencia del hormigón

This research presents the evaluation based on the resistivity and resistance in a conventional concrete of 210 kg/cm², using the ash resulting from the calcination of sugarcane bagasse, obtained from crops destined for the production of artisanal liquor and panela in the Agua Fría site in the Junín canton, belonging to the province of Manabí, with ash being a percentage replacement of 5%, 10% and 15% of the cement, making a comparison between aggregates from two quarries, one located in the province of Manabí (Quarry “ A”) and another located in the province of Santo Domingo de los Tsáchilas (quarry “B”). To obtain the ash, the sugar cane bagasse was calcined at a controlled temperature of 700ºC for 2 hours. Cylindrical specimens of 10cm x 20cm were used, to then subject them to measure the surface resistivity and carry out the different compression tests for the ages of 7, 14, 21 and 28 days of curing. From the results obtained, it was possible to verify that there was a contribution in concrete resistance based on the standard design in 5% and 10%, decreasing in 15% of CBCA replacement in both quarries; on the other hand, the resistivity range remains moderate for the standard design, 5% and 10%, and reaches a high range at 15% CBCA replacement for both quarries. Keywords: Resistivity, Resistance, Bagasse, Pozzolana, Design.Esta investigación presenta la evaluación en función a la resistividad y resistencia en un hormigón convencional de 210 kg/cm², utilizando la ceniza resultante de la calcinación del bagazo de caña de azúcar, obtenido de cultivos destinados a la producción de licor artesanal y panela en el sitio Agua Fría del cantón Junín, perteneciente a la provincia de Manabí, siendo la ceniza un reemplazo porcentual del 5%, 10% y 15% del cemento realizando una comparativa entre agregados de dos canteras, una ubicada en la provincia de Manabí (Cantera “A”) y otra ubicada en la provincia de Santo Domingo de los Tsáchilas (cantera “B”). Para la obtención de la ceniza se calcinó el bagazo de caña de azúcar a una temperatura controlada de 700ºC durante 2 horas. Se utilizaron probetas cilíndricas de 10cm x 20cm, para luego someterlos a medir la resistividad superficial y realizar los respectivos ensayos a compresión para las edades de 7, 14, 21 y 28 días de curado. De los resultados obtenidos se pudo comprobar que hubo una aportación en resistencia del hormigón en función al diseño estándar en el 5% y 10%, disminuyendo en el 15% de reemplazo de CBCA en ambas canteras; por otra parte, el rango de resistividad se mantiene en moderado para el diseño estándar, 5% y 10%, y alcanza un rango alto en 15% de reemplazo CBCA para ambas canteras. Palabras clave: Resistividad, Resistencia, Bagazo, Puzolana, Diseño. Abstract This research presents the evaluation based on the resistivity and resistance in a conventional concrete of 210 kg/cm², using the ash resulting from the calcination of sugarcane bagasse, obtained from crops destined for the production of artisanal liquor and panela in the Agua Fría site in the Junín canton, belonging to the province of Manabí, with ash being a percentage replacement of 5%, 10% and 15% of the cement, making a comparison between aggregates from two quarries, one located in the province of Manabí (Quarry “ A”) and another located in the province of Santo Domingo de los Tsáchilas (quarry “B”). To obtain the ash, the sugar cane bagasse was calcined at a controlled temperature of 700ºC for 2 hours. Cylindrical specimens of 10cm x 20cm were used, to then subject them to measure the surface resistivity and carry out the different compression tests for the ages of 7, 14, 21 and 28 days of curing. From the results obtained, it was possible to verify that there was a contribution in concrete resistance based on the standard design in 5% and 10%, decreasing in 15% of CBCA replacement in both quarries; on the other hand, the resistivity range remains moderate for the standard design, 5% and 10%, and reaches a high range at 15% CBCA replacement for both quarries. Keywords: Resistivity, Resistance, Bagasse, Pozzolana, Design. Información del manuscrito:Fecha de recepción: 06 de junio de 2022.Fecha de aceptación: 26 de agosto de 2022.Fecha de publicación: 29 de septiembre de 2022