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Undrained Young’s Modulus of Fine-Grained Soils

Casey, B. / Germaine, J. T. / Abdulhadi, N. O. / Kontopoulos, N. S. / Jones, C. A.

A reliable estimate of secant undrained Young’s modulus ( $E_{u}$ ) is necessary to quantify the undrained settlement of structures underlain by fine-grained soils. A large number of ${CK}_{0} UC$ triaxial tests have been carried out on eight resedimented clays to establish the effects of soil composition, applied shear stress, overconsolidation, and vertical consolidation stress on the magnitude of $E_{u}$ . These tests were performed at effective stresses ranging from 0.02 to 100 MPa. Low plasticity soils tend to have a higher $E_{u}$ compared with high plasticity soils. The effect of composition diminishes as the applied shear stress increases. Overconsolidated (OC) soil has a higher undrained modulus than normally consolidated (NC) soil, though a change in the overconsolidation ratio of OC soil does not have a significant effect on $E_{u}$ . Regression analyses performed on the experimental data define relationships for $E_{u}$ as a function of stress level for both NC and OC soil.

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Undrained Young’s Modulus of Fine-Grained Soils

Casey, B. / Germaine, J. T. / Abdulhadi, N. O. / Kontopoulos, N. S. / Jones, C. A.

A reliable estimate of secant undrained Young’s modulus ( $E_{u}$ ) is necessary to quantify the undrained settlement of structures underlain by fine-grained soils. A large number of ${CK}_{0} UC$ triaxial tests have been carried out on eight resedimented clays to establish the effects of soil composition, applied shear stress, overconsolidation, and vertical consolidation stress on the magnitude of $E_{u}$ . These tests were performed at effective stresses ranging from 0.02 to 100 MPa. Low plasticity soils tend to have a higher $E_{u}$ compared with high plasticity soils. The effect of composition diminishes as the applied shear stress increases. Overconsolidated (OC) soil has a higher undrained modulus than normally consolidated (NC) soil, though a change in the overconsolidation ratio of OC soil does not have a significant effect on $E_{u}$ . Regression analyses performed on the experimental data define relationships for $E_{u}$ as a function of stress level for both NC and OC soil.

Undrained Young’s Modulus of Fine-Grained Soils

Casey, B. / Germaine, J. T. / Abdulhadi, N. O. / Kontopoulos, N. S. / Jones, C. A.

A reliable estimate of secant undrained Young’s modulus ( $E_{u}$ ) is necessary to quantify the undrained settlement of structures underlain by fine-grained soils. A large number of ${CK}_{0} UC$ triaxial tests have been carried out on eight resedimented clays to establish the effects of soil composition, applied shear stress, overconsolidation, and vertical consolidation stress on the magnitude of $E_{u}$ . These tests were performed at effective stresses ranging from 0.02 to 100 MPa. Low plasticity soils tend to have a higher $E_{u}$ compared with high plasticity soils. The effect of composition diminishes as the applied shear stress increases. Overconsolidated (OC) soil has a higher undrained modulus than normally consolidated (NC) soil, though a change in the overconsolidation ratio of OC soil does not have a significant effect on $E_{u}$ . Regression analyses performed on the experimental data define relationships for $E_{u}$ as a function of stress level for both NC and OC soil.

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Title:

Undrained Young’s Modulus of Fine-Grained Soils

Contributors:

Casey, B. (author) / Germaine, J. T. (author) / Abdulhadi, N. O. (author) / Kontopoulos, N. S. (author) / Jones, C. A. (author)

Published in:

Journal of Geotechnical and Geoenvironmental Engineering ; 142

Publication date:

2015-08-05

ISSN:

1090-0241 , 1943-5606

DOI:

https://doi.org/10.1061/(ASCE)GT.1943-5606.0001382

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

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