Influencia de la adición de fibra sika fiber force 48, en la relación entre la resistencia a la compresión y el módulo de rotura del concreto cemento-arena, Iquitos – 2024
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2026-01-13
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Universidad Científica del Perú
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La investigación determinó la influencia de la adición de Sika Fiber Force - 48, en la correlación entre la resistencia a la compresión y el módulo de ruptura (MR) del concreto cemento - arena, Iquitos – 2024, elaborado con agregado fino de 1.20 de módulo de fineza. La investigación es de tipo cuantitativo; de nivel descriptivo y explicativo; de diseño cuasi experimental. La muestra estuvo conformada por 198 probetas, de las cuales 99 corresponden a la muestra patrón y 99 a la muestra experimental con relaciones A/C = 0.58, 0.63 y 0.68 y cuatro dosificaciones de macrofibra: 0.00 kg/m3, 0.50kg/m3, 0.70kg/m3 y 0.90kg/m3, siendo evaluadas a los 7 y 28 días de curado. La adición de las macrofibras sintéticas Sika Fiber Force – 48 en la mezcla de concreto cemento-arena, influye en la resistencia a la compresión medida en kg/cm2 y a los 28 días de curado. El concreto patrón, para A/C=0.58 alcanzó 310; para A/C=0.63 un valor de 277; y, para la A/C=0.68 una resistencia de 224. Para el experimental, una dosis de fibra de 0.50% y, relación A/C=0.58 la resistencia varió a 323; A/C=0.63 a 296 y para A/C=0.68 fue de 229; para una dosis de 0.70% de fibra y, la A/C=0.58 esta resistencia fue de 333; para la A/C=0.63 el valor fue 301, A/C=0.68 fue de 237; y, para 0.90% de fibra, A/C=0.58 la resistencia alcanzó 296, con A/C=0.63 fue 259, y para A/C=0.68 fue 12kg/cm2; resultando óptimo para la compresión la dosis de 0.70% fibra. Para el concreto patrón, la resistencia a la Flexión (en kg/cm², 28 días), para una relación A/C=0.58 alcanzó 38, A/C=0.63 alcanzó 35 y para A/C=0.68 alcanzó 31. Para el experimental y dosis de fibra de 0.50%, la resistencia a la flexión fue de 41, 37 y 33; para 0.70% fue de 39, 34 y 32; y para el 0.90% de fibra fue de 43, 39 y 30. La mejor flexión obtenida fue con 0.90% de fibras. Los modelos matemáticos para predecir la resistencia a la flexión a partir de la compresión (relaciones f’c vs fr) se ajustan a tipos de ecuaciones lineales y potenciales (R² casi perfecto, 0.996 – 0.997).
The investigation determined the influence of the addition of Sika Fiber Force-48, on the correlation between the Compressive strength and the modulus of rupture (MR) of cement-sand concrete, Iquitos-2024, manufactured with fine aggregate of 1.20 fineness moulus. The research is kind of quantitative, of descriptive and explanatory leveland levela quasi-experimented in design. The Sample was formed by 198 specimens (testpines) of Which 99 corresponded to the standard sample and 99 to the experimental sample with water-cement ratios of 0.58, 0.63, and 0.68 and four macrofiber dag dosages. Kg/m³, 0,50 kg/m³, 0.70 kgm, and kg/m³, evaluated after seven (7) and twenty night (28 2 days of curing. The addition of Sika Fiber Force 48 synthetic macrofibers to the cement - sand concrete mix, influences on the Compressive strength measured in kg/cm² after 28 days of curling. The concrete pattern, with a w/c ratio of 0.58, reached 310, with w/c ratio of 0.63, a value of 277, and with ratio of ass a strength of 224. For the experimental mix, with a fiber dosage of 0.50% and W/C ratio 0.58, the strength varied to 323; with W/k ratio of 0.03, to 296; and with w/C ratio of 0.68, it was 229. with a fiber dosage of 0.70% and a W/c ratio of 0.68, it was 237, and for 0.90% fiber, with a water cement ratio (W/c) of 0.58, the compressive strength reached 296 kg/cm², with w/C of a.63, it was 259 Kg/cm², and with w/c of 0.68, it was 12 kg/cm². the optimal dosage for optimal results for compression found to be 0.70% of fiber, and for the Concrete pattern, the flexural strength(in kg/cm² 28 day) for a w/k ratio of 0.58 reached 3 kg/cm², for w/k o.cs, it reached 35 kg/cm², and for w/c of 0.68. It reached 31 kg/cm². For the experimental mér and Fiber dosage of 0.50% the floaral strength was 41 kg/cm², 37 kg/cm², and 33 kg/em³, for w/c of 0.70% was 39, 34, 32 kg/cm² and for W/k of 0.90% of Fiber; it was 43,39,30 kg/cm². the best flexural strength obtained was 0.90% of Fiber. The mathematical models for predicting Flexural strength from compression (fc vs. fr relationships) fit linear and power law equation types (almost perfect R2, 0.996-0.997).
The investigation determined the influence of the addition of Sika Fiber Force-48, on the correlation between the Compressive strength and the modulus of rupture (MR) of cement-sand concrete, Iquitos-2024, manufactured with fine aggregate of 1.20 fineness moulus. The research is kind of quantitative, of descriptive and explanatory leveland levela quasi-experimented in design. The Sample was formed by 198 specimens (testpines) of Which 99 corresponded to the standard sample and 99 to the experimental sample with water-cement ratios of 0.58, 0.63, and 0.68 and four macrofiber dag dosages. Kg/m³, 0,50 kg/m³, 0.70 kgm, and kg/m³, evaluated after seven (7) and twenty night (28 2 days of curing. The addition of Sika Fiber Force 48 synthetic macrofibers to the cement - sand concrete mix, influences on the Compressive strength measured in kg/cm² after 28 days of curling. The concrete pattern, with a w/c ratio of 0.58, reached 310, with w/c ratio of 0.63, a value of 277, and with ratio of ass a strength of 224. For the experimental mix, with a fiber dosage of 0.50% and W/C ratio 0.58, the strength varied to 323; with W/k ratio of 0.03, to 296; and with w/C ratio of 0.68, it was 229. with a fiber dosage of 0.70% and a W/c ratio of 0.68, it was 237, and for 0.90% fiber, with a water cement ratio (W/c) of 0.58, the compressive strength reached 296 kg/cm², with w/C of a.63, it was 259 Kg/cm², and with w/c of 0.68, it was 12 kg/cm². the optimal dosage for optimal results for compression found to be 0.70% of fiber, and for the Concrete pattern, the flexural strength(in kg/cm² 28 day) for a w/k ratio of 0.58 reached 3 kg/cm², for w/k o.cs, it reached 35 kg/cm², and for w/c of 0.68. It reached 31 kg/cm². For the experimental mér and Fiber dosage of 0.50% the floaral strength was 41 kg/cm², 37 kg/cm², and 33 kg/em³, for w/c of 0.70% was 39, 34, 32 kg/cm² and for W/k of 0.90% of Fiber; it was 43,39,30 kg/cm². the best flexural strength obtained was 0.90% of Fiber. The mathematical models for predicting Flexural strength from compression (fc vs. fr relationships) fit linear and power law equation types (almost perfect R2, 0.996-0.997).
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Concreto cemento-arena, Módulo de ruptura, Resistencia a la compresión, Cement-sand concrete, Moulus of rupture and compressive strength
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