Experimental and numerical investigation of soil-atmosphere interaction

Cui, Yu‐Jun; Ta, An Ninh; Hemmati, Sahar; Tang, Anh Minh; Gatmiri, Behrouz

doi:10.1016/j.enggeo.2012.03.018

Cited by 64 publications

(28 citation statements)

References 35 publications

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“…The laboratory experiment of thin clay layer by Tang et al [18] was chosen because the major material properties of the Romainville clay used in the tests could be found in literature [18][19][20]. The clay is considered to be a typical reactive soil with high swell shrink potential.…”

Section: Results Of Laboratory Experimentsmentioning

confidence: 99%

Modelling desiccation cracking in thin clay layer using three-dimensional discrete element method

Sima

Jiang

Zhou

2013

AIP Conference Proceedings

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Abstract. Desiccation cracking of soils is of critical importance in many applications, such as industry wastes, hydraulic barriers, road embankments, and agriculture practice. This paper presented a numerical approach for modelling desiccation cracks in a thin clay layer with considering the changes in material properties during drying. Based on the micro-structure theory of clay, the swell and shrinkage behavior of clay could be explained by the swelling and shrinkage of aggregates. Therefore, an aggregates-shrinking model was proposed and its parameters were determined by matching the experimental data in literature. Then, the desiccation cracking of clay in plate shape was modeled by a three-dimensional discrete element code (PFC3D). The results obtained from the proposed numerical model had been compared with the experimental results in literature, which showed that the proposed DEM model can capture the initiation and propagation of cracks in a thin desiccated clay layer.

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Section: Results Of Laboratory Experimentsmentioning

confidence: 99%

Modelling desiccation cracking in thin clay layer using three-dimensional discrete element method

Sima

Jiang

Zhou

2013

AIP Conference Proceedings

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“…The current trend makes it one of the largest areas of applications and looks promising in terms of the utilization of such techniques for innovative investigations. Information on the mechanism of preferential filling of pore spaces with water enables the understanding of the structure and configuration between different soil molecules (Hopmans et al 2004;Cui et al 2013). Mooney and Morris (2008) showed how CT and dye tracer image analysis could be used to express the influence of soil macro-structure on water potential under different soil physical properties.…”

Section: Soil Hydraulic and Structural Dynamicsmentioning

confidence: 99%

Combining X-ray computed tomography with relevant techniques for analyzing soil–root dynamics – an overview

Mao

Kumi

et al. 2015

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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The study of below-ground features of roots and soil and their interactions is essential for understanding the configuration and diversities in such a dynamic environment. X-ray computed tomography is recognized as a tool for visualizing the physical interactions in the soil. In many studies, it has been used as a stand-alone tool to describe soil and root parameters. However, in recent times, attempts to couple it with other complementary tools are gaining rapid interest among researchers. The paper therefore provides an overview of the major application of combining X-ray computed tomography with other relevant methods in analyzing the structural characteristics of roots and soil media. The relevance of using this multidisciplinary approach for unraveling the mysteries surrounding root-soil dynamic interactions is stressed. The current and future trends of such studies are also pointed out.

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“…The THM formulation presented here for continuous porous medium has been implemented in θ‐STOCK code, which is a powerful computational package for the analysis of THM behavior of multiphase porous medium. This package has been used for modeling a variety of problems in THM behavior of unsaturated soils .…”

Section: Numerical Examplesmentioning

confidence: 99%

A model for moisture and heat flow in fractured unsaturated porous media

Varnosfaderani

Gatmiri

Haghighi

2016

Num Anal Meth Geomechanics

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Summary The present study investigates propagation of a cohesive crack in non‐isothermal unsaturated porous medium under mode I conditions. Basic points of skeleton deformation, moisture, and heat transfer for unsaturated porous medium are presented. Boundary conditions on the crack surface that consist of mechanical interaction of the crack and the porous medium, water, and heat flows through the crack are taken into consideration. For spatial discretization, the extended finite element method is used. This method uses enriched shape functions in addition to ordinary shape functions for approximation of displacement, pressure, and temperature fields. The Heaviside step function and the distance function are exploited as enrichment functions for representing the crack surfaces displacement and the discontinuous vertical gradients of the pressure and temperature fields along the crack, respectively. For temporal discretization, backward finite difference scheme is applied. Problems solved from the literature show the validity of the model as well as the dependency of structural response on the material properties and loading. Copyright © 2016 John Wiley & Sons, Ltd.

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Experimental and numerical investigation of soil-atmosphere interaction

Cited by 64 publications

References 35 publications

Modelling desiccation cracking in thin clay layer using three-dimensional discrete element method

Modelling desiccation cracking in thin clay layer using three-dimensional discrete element method

Combining X-ray computed tomography with relevant techniques for analyzing soil–root dynamics – an overview

A model for moisture and heat flow in fractured unsaturated porous media

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