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Lyesse Laloui

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Related publications (386)

Estimating the geothermal potential of heat exchanger anchors on a cut and cover tunnel

Lyesse Laloui, Thomas Mimouni, Fabrice Dupray

This study addresses the geothermal potential of using the anchors of a cut-and-cover tunnel as heat exchangers with the ground for seasonal heat storage. The influence of the soil properties and water table level were investigated. Various service conditi ...

Elsevier2014

Multi-Scale Approach for Modeling Desiccation Shrinkage in Granular Soils

Lyesse Laloui

This paper aims to identify and quantitatively evaluate various critical mechanisms associated with the processes of desiccation shrinkage and cracking in drying silty soils. A previously developed 1D bundle-of-tubes model is refined to simulate the variou ...

2014

Multi-Physics Modelling Of The Consolidation Processes In Variably Saturated Elasto-Plastic Soils Due To High-Temperature

Lyesse Laloui

The aim of this paper is numerical analysis of the consolidation processes in soils due to high temperature. A fully coupled finite element model for non-isothermal elasto-plastic multiphase materials at high temperature is therefore developed in the frame ...

Int Center Numerical Methods Engineering2014

A three-scale cracking criterion for drying soils

Lyesse Laloui

Cracking is a most unwanted development in soil structures undergoing periodic drying and wetting. Desiccation cracks arise in an apparent absence of external forces. Hence, either an internal, self-equilibrated stress pattern resulting from kinematic inco ...

De Gruyter Open Ltd2014

Heat-exchanger piles for the de-icing of bridges

Lyesse Laloui, Fabrice Dupray, Chao Li

Of the various types of road structures, bridges are the most exposed to icing; the problem of icing is widely addressed through salting, which reduces the lifespan of the bridge. One promising solution to avoid the use of salt is the seasonal storage of s ...

Springer Verlag2014

THM coupling sensitivity analysis in geological nuclear waste storage

Lyesse Laloui, Fabrice Dupray, Chao Li

A deep geological repository involving a multi-barrier system constitutes one of the most promising options to isolate high-level radioactive waste from the human environment. In order to certify the efficiency of waste isolation, it is essential to unders ...

Elsevier2013

Numerical study of the heating-cooling effects on the geotechnical behaviour of energy piles

Lyesse Laloui, Fabrice Dupray, Alice Di Donna

Energy geostructures represent a renewable and clean source of energy which can be used for heating and cooling of buildings and de-icing of infrastructures. This technology couples the structural role of geostructures with the energy supply, using the pri ...

Taylor & Francis Group2013

Experimental analysis of the retention behavior of shales

Lyesse Laloui, Alessio Ferrari, Valentina Favero

The analysis of the volumetric behavior and the consolidation of shales require the involved materials to be tested under high confining stresses. The paper presents the apparatuses and the techniques that have been developed recently for testing shales un ...

2013

Characterization of THM Behaviour of Compacted MX-80 Granular Bentonite Using an Advanced Double-wall Triaxial Cell

Lyesse Laloui, Alessio Ferrari, Ali Seiphoori

This paper aims at characterization of thermo-hydro-mechanical behaviour of MX-80 granular bentonite obtained from an innovative double-cell triaxial system. The system has been mainly developed to perform suction controlled tests on unsaturated geomateria ...

2013

Multi-Scale Approach to Cracking Criteria for Drying Silty Soils

Lyesse Laloui, Mohammad Monfared

Cracking is a most unwanted development in soil structures undergoing periodic drying. Desiccation cracking arises in the apparent absence of external forces. Hence, either an internal, self equilibrated stress pattern resulting from kinematic incompatibil ...

American Society of Civil Engineers2013

Desiccation shrinkage of non-clayey soils: a numerical study

Lyesse Laloui, Hervé Péron

A meso-scale model based on the evolution of the pore system and idealized as bimodal is numerically examined. A simplified evolution of the model reveals a series of characteristics that qualitatively agree with the observed macroscopic experimental findi ...

Wiley-Blackwell2013

Early warning thresholds for partially saturated slopes in volcanic ashes

Lyesse Laloui, John Eichenberger, Alessio Ferrari

Rainfall-induced landslides in steep soil slopes of volcanic origin are a major threat to human lives and infrastructure. In the context of constructing early warning systems in regions where extensive data on landslide occurrences and associated rainfall ...

Elsevier2013

Retention behaviour of natural clayey materials at different temperatures

Lyesse Laloui, Simon Salager, Marta Rizzi

The water retention capacity of geomaterials, and especially clayey soils, is sensitive to temperature changes as the physical mechanisms of retention, such as capillarity or adsorption, are affected by it. It is therefore a major issue to be able to defin ...

Springer Verlag2013

An experimental and constitutive investigation on the chemo-mechanical behaviour of a clay

Lyesse Laloui, Alessio Ferrari, Paul Joost Witteveen

Engineering issues for which the understanding of the chemo-mechanical behaviour of soils is relevant include wellbore stability problems, the sali-nification of groundwater and nuclear waste storage, etc. However, despite the vast number of situations in ...

Ice Publishing2013

Chemo-mechanical behaviour of a low activity clay

Lyesse Laloui, Alessio Ferrari, Paul Joost Witteveen

Environmental geotechnics involves several engineering applications (such as the salinification of groundwater and the storage of nuclear wastes) for which a deep understanding of the chemo-mechanical behaviour of soils is a fundamental component. Despite ...

Taylor & Francis Group2013

An Insight into the Fluid Retention Capabilities of Shales

Lyesse Laloui, Alessio Ferrari, Valentina Favero

The hydro-mechanical behaviour of shales is becoming one of the most important issues in modern geomechanics, largely driven by petroleum industries (i.e., the extraction of shale gas), the sequestration of CO2 and the nuclear waste geological storage. In ...

2013

Effect of groundwater flow on the THM behavior of an energy pile

Lyesse Laloui, Mélanie Baehler, Fabrice Dupray

Bridges are one of the road structures that are most exposed to icing, a problem that is widely dealt with through salting, a technique that reduce the lifespan of the bridge. Seasonal storage of solar heat energy captured directly through the asphalt laye ...

Taylor & Francis Group2013

Formation of drying crack patterns in soils : a deterministic approach

Lyesse Laloui, Hervé Péron

Soils, as well as most of deformable multiphase porous materials, are likely to suffer from desiccation cracking, leading to the formation of regular crack patterns affecting their permeability. The ensuing cracks spacing has often been related to a concep ...

Springer Verlag2013

Hydro-mechanical behaviour of a volcanic ash

Lyesse Laloui, John Eichenberger, Alessio Ferrari

This paper presents experimental analysis and numerical modelling aimed at improved understanding and prediction of the hydro-mechanical behaviour of volcanic ash at various states of saturation. Results from a comprehensive experimental program are presen ...

Ice Publishing2013

Advances in thermo-active foundations and underground structures

Lyesse Laloui, Thomas Mimouni, Fabrice Dupray

2013

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