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Lyesse Laloui

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Publications associées (386)

Water flow between soil aggregates

Lyesse Laloui, Laurent Vulliet, Azad Koliji

2007

Automated Digital Image Processing for Volume Change Measurement in Triaxial Cells

Lyesse Laloui, Laurent Vulliet

An automated digital image processing technique is presented for the measurement of specimen volume change during triaxial testing. A digital camera is fixed at a constant distance from the triaxial cell. Pictures taken at various intervals are processed ( ...

2007

Numerical and experimental investigation of desiccation of soil

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

Editorial: Special issue on Water in Pavements

Lyesse Laloui

This special issue contains a selection of invited, full-length, peer-reviewed manuscripts from participants of the international workshop “Water in Pavements WIP’05”, held in Madrid, Spain on 27th October 2005. The presented papers give a complete picture ...

2007

Soil structure evolution : experimental and constitutive consideration

Lyesse Laloui, Laurent Vulliet, Azad Koliji

2007

Mechanical constitutive framework for thermal effects on unsaturated soils

Lyesse Laloui, Bertrand François, Mathieu Nuth

Taylor & Francis2007

Unified stress framework for modelling unsaturated subsoil behaviour

Lyesse Laloui, Mathieu Nuth

Traffic loads combined with moisture variations are the most harmful for road structures. Even if the pavement is assumed to have an elastic behaviour, the partially saturated subsoil can present irreversible strains that endanger the integrity of the road ...

2007

The Influence of the Pore Fluid on Desiccation of a Deformable Porous Material

Lyesse Laloui, Hervé Péron

2007

Numerical modelling of the hydrogeological and geomechanical behaviour of a large slope movement: The Triesenberg landslide (Liechtenstein)

Lyesse Laloui, Laurent Tacher, Véronique Triguero, Bertrand François

Using advanced hydrogeological and geomechanical finite element modelling, it has been possible to model the mechanical behaviour of a large slope movement, the Triesenberg landslide. This slope is located along the Rhine valley in the Principality of Liec ...

2007

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

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

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

Modeling of desiccation cracking in engineered clay barriers for waste disposal

Lyesse Laloui, Hervé Péron

Damage induced by desiccation (i.e. drying and cracking) is a ubiquitous issue in waste storage engineering. The fundamental mechanisms of the phenomenon of cracking during drying and the ways to control or avoid it are still elusive. This paper presents t ...

2007

Mechanisms of desiccation cracking of soil : Validation

Lyesse Laloui, Hervé Péron

Taylor & Francis2007

An improved volume measurement for determining soil water retention curve

Lyesse Laloui, Hervé Péron

The complete determination of soil water retention curve requires the sample volume to be measured, in order to calculate its void ratio and saturation degree. During drying in the pressure plate apparatus, cracks often appear in the sample altering its de ...

2007

A stress-strain framework for modeling the behaviour of unsaturated soils under non-isothermal conditions

Lyesse Laloui, Bertrand François

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

2007

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

Experimental and numerical investigations of the behaviour of a heat exchanger pile

Lyesse Laloui, Laurent Vulliet, Mathieu Nuth

2006

Attrition and particle breakage under monotonic and cyclic loading

Lyesse Laloui, Frédéric Mayoraz, Laurent Vulliet

2006

Elasto-plasticity of unsaturated soils : laboratory test results on a remoulded silt

Lyesse Laloui, Laurent Vulliet

Current models of the elasto-plastic behaviour of unsaturated soils contain important underlying assumptions that have not been tested due to a lack of adequate experimental data. To address this issue, the objective of this paper is to provide a comprehen ...

2006

Advances in volume measurement in unsaturated triaxial tests

Lyesse Laloui, Laurent Vulliet, Hervé Péron

In unsaturated soil mechanics testing, total volume change of the specimen is related to both water and air volume changes and cannot be measured with the same techniques as in conventional saturated soil mechanics. Over the years, several methods have bee ...

2006

Numerical modelling of coupled poromechanics processes

Lyesse Laloui

2006

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