Concept

Minéral argileux

Publications associées (189)

Water retention behaviour and microstructural evolution of MX-80 granular bentonite during wetting and drying cycles

Lyesse Laloui, Alessio Ferrari, Ali Seiphoori

MX-80 bentonite used in engineered barrier systems would be subjected to wetting and drying cycles. To assess the response of the material under such circumstances, a comprehensive experimental characterisation of the water retention behaviour of compacted ...

2014

Geochemical control on uranium(IV) mobility in a mining-impacted wetland

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Alexandre Bagnoud, Yuheng Wang, Lydie Chesaux

Wetlands often act as sinks for uranium and other trace elements. Our previous work at a mining-impacted wetland in France showed that a labile noncrystalline U(IV) species consisting of U(IV) bound to Al-P-Fe-Si aggregates was predominant in the soil at l ...

2014

Consequences of the Thermal Transient on the Evolution of the Damaged Zone Around a Repository for Heat-Emitting High-Level Radioactive Waste in a Clay Formation: a Performance Assessment Perspective

Vincent Labiouse, Xing Li, Li Yu

A proper evaluation of the perturbations of the host rock induced by the excavation and the emplacement of exothermic wastes is essential for the assessment of the long-term safety of high-level radioactive waste disposals in clay formations. The impact of ...

Springer Verlag2014

Laboratory and in situ simulation tests of the Excavation Damaged Zone around galleries in Opalinus Clay

Vincent Labiouse

In the context of nuclear waste disposal in clay formations, laboratory and in situ simulation experiments were performed to study at reduced scale the Excavation Damaged Zone (EDZ) around tunnels in the indurated Opalinus Clay at Mont Terri, Switzerland. ...

Springer Verlag2014

Shock Events in the Solar System: The Message from Minerals in Terrestrial Planets and Asteroids

Philippe Gillet

Impacts are central to the origin and evolution of planets of the Solar System. The shapes of craters, which can reach up to 1,000 km in diameter on the Moon, provide critical information on the large-scale dynamics of the impact and related shock. Mineral ...

Annual Reviews2013

An experimental model approach of biologically-assisted silicate dissolution with olivine and Escherichia coli - Impact on chemical weathering of mafic rocks and atmospheric CO2 drawdown

Philippe Gillet, Bruno Garcia

Chemical weathering of Mg, Ca-silicates and alumino-silicates contributes significantly to the drawdown of atmospheric CO2 over long time scales. The present work focuses on how this mode of weathering may change in the presence of free-living bacteria in ...

Pergamon-Elsevier Science Ltd2013

Using Silicate Mineral Particles for pH Control during in situ Bioremediation of Chlorinated Ethene Source Zones

Elsa Marina Lacroix

Soil and groundwater pollution by chlorinated solvents such as tricholorethene (TCE) and tetrachloroethene (PCE) is a frequent problem in the industrialized world. Chlorinated solvents, characterized by a low solubility and a density greater than water, fo ...

EPFL2013

Lowering the global warming impact of bridge rehabilitations by using Ultra High Performance Fibre Reinforced Concretes

Emmanuel Denarié, Pierre Rossi

Ultra-High Performance Fibre Reinforced Concrete (UHPFRC)is charact erized by aunique combination of extremely low permeability, high strength and deformability. Extensive R&D works and applications over the last 10 years have demonstrated that cast on sit ...

Elsevier Sci Ltd2013

An Innovative Technique for Water Retention Characterization of Highly Swelling Geomaterials

Lyesse Laloui, Alessio Ferrari, Ali Seiphoori

This paper presents an innovative method called Micro-cell technique to obtain the water retention curves of geomaterials particularly highly swelling clays such as MX-80 bentonite. This method is based on the controlled water content and measured suction ...

2013

First-principles insights into the structure of the incipient magnesium oxide and its instability to decomposition: Oxygen chemisorption to Mg(0001) and thermodynamic stability

Michael Frederick Francis

In this paper, a detailed density functional theory analysis of oxygen binding to Mg(0001) and subsequent clustering is presented. Oxygen monomer adsorption to Mg(0001) is demonstrated to be subsurface. It is shown that magnesium mediates an attractive oxy ...

Amer Physical Soc2013

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search