Concept

Soil consolidation

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Effect of temperature on collapse potential of kaolin clay

Lyesse Laloui, Ali Haghighi

The understanding of the fundamental behaviour of clays subjected to high temperatures is essential when working with clay barriers in nuclear waste storage, drilling of deep offshore wells or using clay liners on landfills. The effect of temperature on th ...

2011

A Laboratory Investigation on Thermal Properties of the Opalinus Claystone

Mohammad Monfared

Some aspects of the thermal behavior of the Opalinus claystone are investigated through laboratory tests conducted on a new hollow cylinder triaxial apparatus specially designed for studying the thermo-hydromechanical behavior of very low permeable materia ...

Springer Vienna2011

A multi-scale multi-physics model of soil drying

Lyesse Laloui, Hervé Péron

Drying shrinkage is modeled at a microscale as a two-stage process of deformation and evacuation of a two-tube vessel system, based on porosimetry evolution. In the first stage water flow is driven by an external evaporation flux. Flow is associated with a ...

ASCE2011

Constitutive models for the joint estimation of electrical conductivity and permittivity of variably-saturated soils

Alessandro Brovelli

In the context of sustainable development, there is a growing interest in mapping soil characteristics and land use, in particular to evaluate threats to soil quality. Fast non-invasive geophysical surveys have been used to estimate the areal distribution ...

2011

Definition and experimental determination of a soil-water retention surface

Simon Salager

This paper deals with the definition and determination methods of the soil-water retention surface (SWRS), which is the tool used to present the hydromechanical behaviour of soils to highlight both the effect of suction on the change in water and total vol ...

National Research Council Canada2010

Investigations on water retention behaviour of deformable soils

Lyesse Laloui, Alessio Ferrari, Mathieu Nuth, Simon Salager

The trend in modern unsaturated soil mechanics is to enhance the physical understanding of the soil water retention properties. It is agreed that the retention characteristics depend on the state of compaction and are related to the deformability of the me ...

Taylor & Francis Group2010

The void ratio dependency of the retention behaviour for a compacted clay

Alessio Ferrari, Andrea Battiato

The paper presents the results of a comprehensive experimental programme aimed to characterize the retention properties of a compacted scaly clay by determining the retention curves in terms of main wetting and main drying branches at different values of v ...

Unsaturated Soils2010

Volume change behaviour of a compacted scaly clay during cyclic suction changes

Alessio Ferrari

The research presented in this paper focuses on the investigation and modelling of the volume change response of compacted tectonised clay samples subjected to several wetting and drying cycles in controlled-suction oedometers. Oedometer tests were carried ...

National Research Council Canada2010

Bone Composite Mechanics Related to Collagen Hydration State

Matteo Galli

Bone is considered in two different composite mechanics frameworks: first as an organic inorganic two phase composite, and second as a fluid-saturated porous solid. Experimental data from previous studies, in which the mechanical responses of bone or colla ...

2010

Mechanics of Unsaturated Geomaterials

Lyesse Laloui

An understanding of the mechanics of unsaturated geomaterials has become an important component of the background of a geo-engineer operating in various fields of geomechanics. Several geotechnical operations, such as compaction and excavation processes, a ...

John Wiley & sons2010