Influencia del superplastificante master ease 3900 en la resistencia a la compresión del concreto cemento-arena, elaborado con agregado de Iquitos- 2023
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2024-12-18
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Universidad Científica del Perú
Abstract
La presente investigación busca determinar la influencia del superplastificante Master Ease 3900 en la resistencia a la compresión y flexión del concreto cemento-arena elaborado solamente con agregado fino de la cantera km 25+200 Carretera Iquitos-Nauta. Con un estudio de nivel descriptivo y explicativo, busca describir y responder la causa del efecto que sufren las muestras conformadas por 252 probetas.
Las muestras fueron elaboradas con agregado fino de MF 1.12 y cemento Portland tipo GU de la marca APU, A/C de 0.58 y aditivo Master Ease 3900 con porcentajes de 0.0% para la muestra patrón y 0.5%, 0.75% y 1.00% para las muestras de diseño, ensayados a los 3, 7 y 28 días de curado.
Los resultados mostraron que la relación A/C 0.60 y 0.62 obtienen las propiedades del concreto fresco con más ventaja, por encima de la relación A/C 0.58. En ese sentido, si se aplica una relación A/C 0.58 con adición de 1.00% de aditivo, se alcanza una manejabilidad de 243%. Es decir, conforme se incremente la relación A/C, la manejabilidad es 2.4 veces superior a la relación A/C 0.58 inicial. Por otro lado, si se aumenta la relación A/C a 0.62 el revenimiento es menor a 1.5”.
Respecto a la resistencia a la compresión y la flexión, los mejores resultados se lograron con la relación A/C 0.58 y adición de aditivo de 1.00%, que fueron procesados con estadística descriptiva. Así mismo, para la prueba de hipótesis se usó la estadística inferencial. Concluyendo finalmente que existe influencia significativa del aditivo MasterEase en la resistencia a la compresión y flexión del concreto cemento – arena según las muestras realizadas.
This research aims to determine the influence of the MasterEase 3900 superplasticizer on the compressive and flexural strength of cement-sand concrete made exclusively with fine aggregate from the km 25+200 Iquitos-Nauta road quarry. Through a descriptive and explanatory study, it seeks to describe and answer the cause of the effect suffered by the samples composed of 252 specimens. The samples were made with MF 1.12 fine aggregate and APU brand type GU Portland cement, with an A/C ratio of 0.58 and MasterEase 3900 additive at percentages of 0.0% for the control sample and 0.5%, 0.75%, and 1.00% for the design samples, tested at 3, 7, and 28 days of curing. The results showed that the A/C ratios of 0.60 and 0.62 obtained the properties of fresh concrete with more advantage, above the A/C ratio of 0.58. In that sense, if an A/C ratio of 0.58 is applied with the addition of 1.00% of the additive, a workability of 243% is achieved. That is, as the A/C ratio increases, the workability is 2.4 times higher than the initial A/C ratio of 0.58. On the other hand, if the A/C ratio is increased to 0.62, the slump is less than 1.5". Regarding compressive and flexural strength, the best results were obtained with the A/C ratio of 0.58 and the addition of 1.00% additive, which were processed with descriptive statistics. Likewise, inferential statistics were used for the hypothesis test. Finally, it is concluded that there is a significant influence of the MasterEase additive on the compressive and flexural strength of the cementsand concrete according to the samples made.
This research aims to determine the influence of the MasterEase 3900 superplasticizer on the compressive and flexural strength of cement-sand concrete made exclusively with fine aggregate from the km 25+200 Iquitos-Nauta road quarry. Through a descriptive and explanatory study, it seeks to describe and answer the cause of the effect suffered by the samples composed of 252 specimens. The samples were made with MF 1.12 fine aggregate and APU brand type GU Portland cement, with an A/C ratio of 0.58 and MasterEase 3900 additive at percentages of 0.0% for the control sample and 0.5%, 0.75%, and 1.00% for the design samples, tested at 3, 7, and 28 days of curing. The results showed that the A/C ratios of 0.60 and 0.62 obtained the properties of fresh concrete with more advantage, above the A/C ratio of 0.58. In that sense, if an A/C ratio of 0.58 is applied with the addition of 1.00% of the additive, a workability of 243% is achieved. That is, as the A/C ratio increases, the workability is 2.4 times higher than the initial A/C ratio of 0.58. On the other hand, if the A/C ratio is increased to 0.62, the slump is less than 1.5". Regarding compressive and flexural strength, the best results were obtained with the A/C ratio of 0.58 and the addition of 1.00% additive, which were processed with descriptive statistics. Likewise, inferential statistics were used for the hypothesis test. Finally, it is concluded that there is a significant influence of the MasterEase additive on the compressive and flexural strength of the cementsand concrete according to the samples made.
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Resistencia a la compresión, Resistencia a la flexión, Aditivo MasterEase 3900, Concreto cemento-arena, Compressive strength, Flexural strength, MasterEase 3900 additive, Cement-sand concrete
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