Patrick Aimedieu
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View article: Quantitative analysis of sheared unsaturated wet granular materials using X-ray micro-tomography and advanced segmentation techniques
Quantitative analysis of sheared unsaturated wet granular materials using X-ray micro-tomography and advanced segmentation techniques Open
The microstructure of sheared unsaturated wet granular materials, comprising solid particles, liquid phases, and void spaces, is explored using X-ray micro-tomography. Advanced segmentation techniques are employed to overcome challenges in…
View article: Deformation, Cracking and Healing Mechanisms in Rock Salt: a Microscale Study
Deformation, Cracking and Healing Mechanisms in Rock Salt: a Microscale Study Open
Hydrogen has raised increasing interest with the need of switching our energy sources to low-carbon ones. Its storage in salt caverns could be a promising solution but the adaptation from seasonal underground storage of hydrocarbons to sho…
View article: Deformation of synthetic rock salt investigated by X-Ray micro-computed tomography: Effect of brine, confining pressure and loading rate
Deformation of synthetic rock salt investigated by X-Ray micro-computed tomography: Effect of brine, confining pressure and loading rate Open
International audience
View article: Combining magnetic resonance imaging and X-ray microtomography to analyse water transfer in unsaturated expansive clay
Combining magnetic resonance imaging and X-ray microtomography to analyse water transfer in unsaturated expansive clay Open
International audience
View article: Exploring two regimes of water mobility in unsaturated expansive clay using NMR relaxometry
Exploring two regimes of water mobility in unsaturated expansive clay using NMR relaxometry Open
International audience
View article: Mechanical behaviour and microstructure of methane hydrate-bearing sandy sediment observed at various spatial scales
Mechanical behaviour and microstructure of methane hydrate-bearing sandy sediment observed at various spatial scales Open
Methane hydrates (MHs) are considered an alternative energy resource but also a potential source of geo-hazards and climate change. The physical/mechanical properties of gas hydrate-bearing sandy sediments are strongly dependent on the dis…
View article: Multi-scale analysis of a porous carbonate rock under triaxial conditions
Multi-scale analysis of a porous carbonate rock under triaxial conditions Open
International audience
View article: Studying water infiltration on bentonite/sand blocks with MRI and X-Ray μCT techniques
Studying water infiltration on bentonite/sand blocks with MRI and X-Ray μCT techniques Open
Radioactive waste management agencies all around the world are focusing their efforts to provide a reliable technical solution to the Deep Geological Disposal (DGD) concept, in order to store high level (HLW) and intermediate level long li…
View article: Impact of sand on the water retention properties of a bentonite/sand mixture by NMR characterization
Impact of sand on the water retention properties of a bentonite/sand mixture by NMR characterization Open
Blocks of compacted bentonite/sand mixture, with a 40/60 proportion in dry mass, are being studied as an elementary component in the construction of seals in the French concept for high-levelradioactive waste disposal. In the disposal, the…
View article: Combining Optical Microscopy and X-ray Computed Tomography Reveals Novel Morphologies and Growth Processes of Methane Hydrate in Sand Pores
Combining Optical Microscopy and X-ray Computed Tomography Reveals Novel Morphologies and Growth Processes of Methane Hydrate in Sand Pores Open
Understanding the mechanisms involved in the formation and growth of methane hydrate in marine sandy sediments is crucial for investigating the thermo-hydro-mechanical behavior of gas hydrate marine sediments. In this study, high-resolutio…
View article: Microstructure, deformation and microcracking of a 3D printed composite
Microstructure, deformation and microcracking of a 3D printed composite Open
iDICs 2020, Digital image correlation standards, training, and global networking virtual conference, Nantes, FRANCE, 19-/10/2020 - 22/10/2020
View article: New X-Ray Microtomography Setups and Optimal Scan Conditions to Investigate Methane Hydrate-Bearing Sand Microstructure
New X-Ray Microtomography Setups and Optimal Scan Conditions to Investigate Methane Hydrate-Bearing Sand Microstructure Open
Methane hydrates, which are naturally formed at high pressures and low temperatures in marine and permafrost sediments, represent a great potential energy resource but also a considerable geo-hazard and climate change source. Investigating…
View article: NEW IMAGING TECHNIQUES IN AMPHIBIAN MEDICINE AND CLINICAL PHYSIOLOGY
NEW IMAGING TECHNIQUES IN AMPHIBIAN MEDICINE AND CLINICAL PHYSIOLOGY Open
International audience
View article: X‐ray tomographic observations of microcracking patterns in fibre‐reinforced mortar during tension stiffening tests
X‐ray tomographic observations of microcracking patterns in fibre‐reinforced mortar during tension stiffening tests Open
For the last decades, new reparation or fabrication processes have been studied to replace traditional rebar by roving of different mineral or organic fibres to avoid corrosion issues. Such materials refer to the family of cementitious com…
View article: Wetting enhanced by water adsorption in hygroscopic plantlike materials
Wetting enhanced by water adsorption in hygroscopic plantlike materials Open
International audience
View article: Impact of initial structural heterogeneity on long-term swelling behavior of MX80 bentonite pellet/powder mixtures
Impact of initial structural heterogeneity on long-term swelling behavior of MX80 bentonite pellet/powder mixtures Open
To better understand results of SEALEX in situ tests carried out at Tournemire Underground Research Laboratory, the hydromechanical behavior of a pellet/powder MX80 bentonite mixtures prepared at a dry density of 1.49 Mg/m 3 were investiga…