Concept

Soil moisture

Publications associées (294)

Unsaturated soils under non-isothermal conditions: Framework of a new constitutive model

This paper addresses a new, unified thermo-mechanical constitutive model for unsaturated soils through a coupled study. In the context of elasto-plasticity and the critical state theory, the model uses the concepts of multi-mechanism and bounding surface t ...

2008

Euler- Euler coupling two phase simulation of seepage through soils in artesian flow conditions

Roham Bakhtyar

This paper presents the results of a two phase Euler-Euler simulation of seepage flow through granular media for upward flow conditions in soils. The simulation first deals with the fluidization process in a stable granular soil. The first fluidization in ...

2008

Finite element modelling of thermo-elasto-plastic water saturated porous materials

Lyesse Laloui, Bertrand François

The purpose of this paper is to present a new finite element formulation for the hydro-thermo-mechanical analysis of elasto-plastic multiphase materials based on Porous Media Mechanics. To this end, the ACMEG-T thermo-plastic constitutive model for saturat ...

2008

On the degree of conversion and coefficient of thermal expansion of a single fiber composite using a FBG sensor

John Botsis, Marco Lai, Joël Cugnoni, Dragan Coric

The increasing needs of extending the lifetime in high-technology fields, such as space and aerospace, rail transport and naval systems, require quality enhancing of the composite materials either from a processing standing point or in the sense of resista ...

Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1 D, Melville, Ny 11747-4501 Usa2008

New insight into the unified hydro-mechanical constitutive modeling of unsaturated soils.

Lyesse Laloui, Mathieu Nuth

Besides the so-called conventional features of behaviour of unsaturated soils, in-situ analyses evidence complex constraining and confining conditions for media submitted to wetting drying cycles. In an effort to simulate the hydro-mechanical coupling effe ...

2007

Compression Tests on a Sandy Silt at Different Suction and Temperature Levels

Lyesse Laloui, Bertrand François, Simon Salager, David Ubals Picanyol

This paper presents a unified thermo-mechanical experimental study on a remoulded unsaturated sandy silt and brings a contribution to the understanding of the fundamental mechanics of unsaturated soils in non- isothermal conditions. The experimental progra ...

2007

Numerical studies on soil moisture distributions in heterogeneous catchments

Andrea Rinaldo, Gianluca Botter

[1] The paper deals with numerical studies of basin-scale dynamics of soil moisture in arbitrarily heterogeneous conditions (i.e., in presence of heterogeneity of climate, soil, vegetation and land use). Its relevance stems from comparative analysis of the ...

2007

Mec^hanisms of desiccation cracking of soil : Validation

Lyesse Laloui, Hervé Péron

Mechanisms of shrinkage and the conditions leading to cracking of drying soils are addressed. An elastic formulation of the hydro-mechanical drying problem is presented. It relies on the analogy which can be drawn between the desiccation process and thermo ...

2007

Mechanisms of desiccation cracking of soil: Validation

Lyesse Laloui, Hervé Péron

Taylor & Francis Inc, 1900 Frost Road, Suite 101, Bristol, Pa 19007 Usa2007

Road runoff over the shoulder diffuse infiltration

Pascal Piguet

A new concept of road runoff management, based on diffuse infiltration over the shoulder, was tested in a real-scale experimentation site located near Grandson, Switzerland. This new concept consists in diffusely infiltrating the road runoff in the infiltr ...

EPFL2007

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