Influencia del plastificante chema plast 120 d en la resistencia a la compresion del concreto cementoarena, elaborado con agregado de cantera rio Amazonas, Iquitos- 2022
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Date
2024-05-06
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Universidad Científica del Perú
Abstract
La investigación es de tipo cuantitativa y de diseño cuasi experimental.
El objetivo fue investigar la influencia del aditivo plastificante CHEMA PLAST 120
D en el concreto - cemento – arena, elaborado con agregado fino marginal
procedente del dragado de arena del rio amazonas a la altura del sector de
Astoria en la cercanía de la ciudad de Iquitos. El módulo de fineza de la arena
fue de 1.42, y con la superficie especifica promedio de 75 cm2/g.
Se aplicó la estadística descriptiva e inferencial, llegándose a la siguiente
conclusión:
Para la relación A/C = 0.58, se obtuvo valores para las propiedades del concreto
fresco más ventajosos que para las relaciones A/C de 0.60 y 0.62. Así el slump
correspondiente para 0%, 0.60%, 0.72% y 0.83% de adición de aditivo Chema
PLast 120 D que se alcanzó fue de 3 ½ “, 7”, 7 ½” y 8 ½”, respectivamente. El %
de aire atrapado fue de 5.60, 5.29, 5.11 y 4.83 y el peso unitario del concreto fue
de 2100.22, 2107.30, 2111.43 y 2117.79, respectivamente. Los resultados
obtenidos para resistencia a la compresión con la adición del 0.83% de aditivo
CHEMA PLAST 120 D y la relación A/C: 0.58 fueron de 235kg/cm2 y 273kg/cm
a los 7 y 28 días, respectivamente.
The research is quantitative and quasi-experimental in design. The objective was to investigate the influence of the plasticizing additive CHEMA PLAST 120 D on concrete - cement - sand, made with fine marginal aggregate from the dredging of sand from the Amazon River near the Astoria sector near the city of Iquitos. The fineness modulus of the sand was 1.42, and with the average specific surface area of 75 m2/g. Descriptive and inferential statistics were applied, reaching the following conclusion: For the W/C ratio = 0.58, more advantageous values were obtained for the properties of fresh concrete than for the W/C ratios of 0.60 and 0.62. Thus the corresponding slump for 0%, 0.60%, 0.72% and 0.83% addition of Chema PLast 120 D additive that was achieved was 3 ½”, 7”, 7 ½” and 8 ½”, respectively. The % of trapped air was 5.60, 5.29, 5.11 and 4.83 and the unit weight of concrete was 2100.22, 2107.30, 2111.43 and 2117.79, respectively. The results obtained for compressive strength with the addition of 0.83% of CHEMA PLAST 120 D additive and the W/C ratio: 0.58 were 235kg/cm2 and 273kg/cm at 7 and 28 days, respectively.
The research is quantitative and quasi-experimental in design. The objective was to investigate the influence of the plasticizing additive CHEMA PLAST 120 D on concrete - cement - sand, made with fine marginal aggregate from the dredging of sand from the Amazon River near the Astoria sector near the city of Iquitos. The fineness modulus of the sand was 1.42, and with the average specific surface area of 75 m2/g. Descriptive and inferential statistics were applied, reaching the following conclusion: For the W/C ratio = 0.58, more advantageous values were obtained for the properties of fresh concrete than for the W/C ratios of 0.60 and 0.62. Thus the corresponding slump for 0%, 0.60%, 0.72% and 0.83% addition of Chema PLast 120 D additive that was achieved was 3 ½”, 7”, 7 ½” and 8 ½”, respectively. The % of trapped air was 5.60, 5.29, 5.11 and 4.83 and the unit weight of concrete was 2100.22, 2107.30, 2111.43 and 2117.79, respectively. The results obtained for compressive strength with the addition of 0.83% of CHEMA PLAST 120 D additive and the W/C ratio: 0.58 were 235kg/cm2 and 273kg/cm at 7 and 28 days, respectively.
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Keywords
Concreto cemento arena, Agregado fino marginal, Resistencia a la compresión, Aditivo plastificante CHEMA PLAST 120D, Concrete cement sand, Marginal fine aggregate, Compressive strength, Plasticizing additive CHEMA PLAST 120D
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