Módulo de elasticidad en arcillas normalmente consolidadas en estado alterado e inalterado
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Authors
Gonzales Pilco Saul Pablo
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Abstract
La presente investigación tiene como objetivo determinar y comparar el Módulo de Elasticidad en arcillas normalmente consolidadas en condiciones alteradas e inalteradas de seis diferentes muestras de los departamentos de Loreto, Cajamarca, San Martin, Junín y Lima, también obtener una relación entre el Módulo de Elasticidad y el Peso Específico para evidenciar si existe alteración en la estructura del suelo. La determinación de los parámetros se efectuó con cinco muestras de arcillas de baja plasticidad con límite líquido menor al 50% y una muestra de alta plasticidad con límite líquido mayor al 50%. Al entrar en saturación, se obtuvo variación en el volumen de la muestra (expansión), una vez estabilizada, se procedió con el ensayo de consolidación con ciclos repetitivos de carga y descarga de 10 kPa, 25 kPa, 50 kPa, 100 kPa, 200 kPa y 400 kPa. Los resultados obtenidos fueron analizados y se concluyó que, al entrar en saturación se obtuvo una gran variación en el porcentaje de expansión en condición inalterada y condición alterada para una misma muestra. Las muestras alteradas se ensayaron bajo las mismas condiciones que una muestra en estado natural, no obstante, los parámetros que se midieron resultaron ser diferentes y significativos con el comportamiento en estado natural. La relación entre Módulo de Elasticidad y Peso Específico en condición inalterada, se obtuvo un Peso Específico menor, un Módulo de Elasticidad y una expansión mayor en comparación con una misma muestra en estado alterado, esta relación varia por la alteración en la estructura del suelo de la muestra inalterada que afecta el comportamiento elástico del mismo.
The objective of this research is to determine and compare the Modulus of Elasticity in normally consolidated clays in altered and unaltered conditions of six different samples from the departments of Loreto, Cajamarca, San Martin, Junín and Lima, and also to obtain a relationship between the Modulus of Elasticity and the Specific Weight to show if there is an alteration in the soil structure. The determination of the parameters was carried out with five samples of low plasticity clays with a liquid limit lower than 50% and one sample of high plasticity with a liquid limit higher than 50%. Upon entering saturation, variation in the volume of the sample was obtained (expansion), once stabilized, the consolidation test was performed with repetitive cycles of loading and unloading of 10 kPa, 25 kPa, 50 kPa, 100 kPa, 200 kPa and 400 kPa. The results obtained were analyzed and it was concluded that, upon entering saturation, a large variation was obtained in the percentage of expansion in the unaltered and altered condition for the same sample. The altered samples were tested under the same conditions as a sample in natural condition, however, the parameters measured turned out to be different and significant with the behavior in natural condition. The relationship between Modulus of Elasticity and Specific Weight in unaltered condition, a lower Specific Weight, a higher Modulus of Elasticity and a higher expansion were obtained in comparison with the same sample in altered condition, this relationship varies due to the alteration in the soil structure of the unaltered sample that affects the elastic behavior of the same.
The objective of this research is to determine and compare the Modulus of Elasticity in normally consolidated clays in altered and unaltered conditions of six different samples from the departments of Loreto, Cajamarca, San Martin, Junín and Lima, and also to obtain a relationship between the Modulus of Elasticity and the Specific Weight to show if there is an alteration in the soil structure. The determination of the parameters was carried out with five samples of low plasticity clays with a liquid limit lower than 50% and one sample of high plasticity with a liquid limit higher than 50%. Upon entering saturation, variation in the volume of the sample was obtained (expansion), once stabilized, the consolidation test was performed with repetitive cycles of loading and unloading of 10 kPa, 25 kPa, 50 kPa, 100 kPa, 200 kPa and 400 kPa. The results obtained were analyzed and it was concluded that, upon entering saturation, a large variation was obtained in the percentage of expansion in the unaltered and altered condition for the same sample. The altered samples were tested under the same conditions as a sample in natural condition, however, the parameters measured turned out to be different and significant with the behavior in natural condition. The relationship between Modulus of Elasticity and Specific Weight in unaltered condition, a lower Specific Weight, a higher Modulus of Elasticity and a higher expansion were obtained in comparison with the same sample in altered condition, this relationship varies due to the alteration in the soil structure of the unaltered sample that affects the elastic behavior of the same.
Description
Universidad Nacional Agraria La Molina. Facultad de Ingeniería Agrícola.
Departamento Académico de Ordenamiento Territorial y Construcción
Keywords
Arcillas
Citation
Date
2025
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