Estudio del desempeño físico-mecánico del concreto f'c=245 kg/cm², utilizando poliacrilato de sodio como agente de curado interno-Chiclayo
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2025
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Universidad Católica Santo Toribio de Mogrovejo
Resumen
Las construcciones en el Perú tienen al concreto como su material principal, en obra por diversos factores no se cumple el procedimiento de curado del concreto de forma óptima, siendo el curado indispensable este no se realiza adecuadamente. El curado es un procedimiento necesario que se refleja en propiedades como la durabilidad y resistencia. Las características del clima de la ciudad de Chiclayo como el viento y las altas temperaturas ahondan los problemas de fisuración por contracción plástica, sumado a la causa de un mal proceso de curado al secar el agua de la cara exterior del concreto. Con la finalidad de buscar generar un curado de una manera más uniforme y eficiente se plantea el uso del Poliacrilato de sodio a fin
de que actúe como un agente de curado interno que absorba el agua de la mezcla y la suministre de vuelta cuando las condiciones dentro del concreto la requieran. Se diseño un concreto para un f’c=245kg/cm2 como muestra patrón a la cual se le curo de manera convencional, se adiciono a la mezcla patrón Poliacrilato de sodio en porciones de 0.05%, 0.1%, 0.15% y 0.3% respecto al peso del cemento. El concreto patrón mostro mejores cualidades de en estado fresco y endurecido a excepción de la fisuración. Producto de la investigación se concluyó que los porcentajes de 0.1 % y 0.15% de Poliacrilato de sodio son las que mejores resultados obtienen en resistencia a compresión, flexión y módulo de elasticidad de entre las muestras con curado interno.
Construction in Peru uses concrete as its primary material. Due to various factors, the concrete curing process is not optimally followed on site, and curing, which is essential, is not carried out properly. Curing is a necessary procedure that reflects properties such as durability and strength. The climate characteristics of Chiclayo, such as wind and high temperatures, exacerbate the problems of plastic shrinkage cracking. This is compounded by the poor curing process, which results in the drying of water from the exterior of the concrete. In order to achieve more uniform and efficient curing, the use of sodium polyacrylate is proposed. This agent acts as an internal curing agent that absorbs water from the mixture and returns it when conditions within the concrete require it. A concrete was designed for an f'c = 245 kg / cm2 as a standard sample, which was cured in a conventional manner. Sodium polyacrylate was added to the standard mix in portions of 0.05%, 0.1%, 0.15% and 0.3% with respect to the weight of the cement. The standard concrete showed better qualities in its fresh and hardened state, except for cracking. As a result of the research, it was concluded that the percentages of 0.1% and 0.15% of sodium polyacrylate are the ones that obtain the best results in compressive strength, flexural strength and modulus of elasticity among the samples with internal curing.
Construction in Peru uses concrete as its primary material. Due to various factors, the concrete curing process is not optimally followed on site, and curing, which is essential, is not carried out properly. Curing is a necessary procedure that reflects properties such as durability and strength. The climate characteristics of Chiclayo, such as wind and high temperatures, exacerbate the problems of plastic shrinkage cracking. This is compounded by the poor curing process, which results in the drying of water from the exterior of the concrete. In order to achieve more uniform and efficient curing, the use of sodium polyacrylate is proposed. This agent acts as an internal curing agent that absorbs water from the mixture and returns it when conditions within the concrete require it. A concrete was designed for an f'c = 245 kg / cm2 as a standard sample, which was cured in a conventional manner. Sodium polyacrylate was added to the standard mix in portions of 0.05%, 0.1%, 0.15% and 0.3% with respect to the weight of the cement. The standard concrete showed better qualities in its fresh and hardened state, except for cracking. As a result of the research, it was concluded that the percentages of 0.1% and 0.15% of sodium polyacrylate are the ones that obtain the best results in compressive strength, flexural strength and modulus of elasticity among the samples with internal curing.
Descripción
Palabras clave
Concreto, Curado del concreto, Aditivos de construcción, Concrete, Concrete curing, Building additives
Citación
S. M. Davila Sotero. "Estudio del desempeño físico-mecánico del concreto f'c=245 kg/cm², utilizando poliacrilato de sodio como agente de curado interno-Chiclayo l," tesis de licenciatura, Fac. de Ingeniería, Univ. USAT, Chiclayo, Perú, 2025. [En línea]. Disponible en:
