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  4. Freezing-induced stiffness and strength anisotropy in freezing clayey soil: Theory, numerical modeling, and experimental validation
 
research article

Freezing-induced stiffness and strength anisotropy in freezing clayey soil: Theory, numerical modeling, and experimental validation

Yin, Qing
•
Ando, Edward  
•
Viggiani, Gioacchino
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June 16, 2022
International Journal For Numerical And Analytical Methods In Geomechanics

This paper presents a combined experimental-modeling effort to interpret the coupled thermo-hydro-mechanical behaviors of the freezing soil, where an unconfined, fully saturated clay is frozen due to a temperature gradient. By leveraging the rich experimental data from the microCT images and the measurements taken during the freezing process, we examine not only how the growth of ice induces volumetric changes of the soil in the fully saturated specimen but also how the presence and propagation of the freezing fringe front may evolve the anisotropy of the effective media of the soil-ice mixture that cannot be otherwise captured phenomenologically in the isotropic saturation-dependent critical state models for plasticity. The resultant model is not only helpful for providing a qualitative description of how freezing affects the volumetric responses of the clayey material, but also provide a mean to generate more precise predictions for the heaving due to the freezing of the ground.

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Type
research article
DOI
10.1002/nag.3380
Web of Science ID

WOS:000811579400001

Author(s)
Yin, Qing
Ando, Edward  
Viggiani, Gioacchino
Sun, WaiChing
Date Issued

2022-06-16

Publisher

WILEY

Published in
International Journal For Numerical And Analytical Methods In Geomechanics
Subjects

Engineering, Geological

•

Materials Science, Multidisciplinary

•

Mechanics

•

Engineering

•

Materials Science

•

clay

•

freezing-induced anisotropy

•

freezing retention curve

•

frozen soil

•

validation

•

ice fringe

•

thermo-hydro-mechanics

•

frost heave

•

hydraulic conductivity

•

unsaturated soils

•

element

•

thaw

•

behavior

•

flow

•

mechanisms

•

plasticity

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
IMAGING  
Available on Infoscience
July 4, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/188990
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