Publication
Dilatant hardening of fluid-saturated sandstone
Related publications (37)
Drained Clay-Pipe Interface Resistance at Low Normal Stresses and Elevated Temperatures
Offshore pipelines that transport hydrocarbons under high pressure and high temperature are usually thermally insulated to maintain an elevated temperature and prevent any heat loss to the surroundings. However, the temperatures at the outer-wall of the pi ...
AMER SOC CIVIL ENGINEERS2023Shear strength and shear stiffness analysis of compacted Wyoming-type bentonite
Wyoming-type bentonite is one of the materials to be used as part of the Engineered Barrier System (EBS) in deep geological disposal facilities for the safe disposal of spent nuclear fuel.In the KBS-3 type repository, the canisters containing the spent fue ...
ELSEVIER2023Swelling and shrinkage of partially saturated gas shales: from laboratory tests to an effective stress framework
Gas shale swelling during hydraulic stimulation is one of the major challenges in unconventional gas development. It is hypothesized that the large volumetric strain upon water imbibition is a consequence of dramatic changes in capillary pressure and disjo ...
EPFL2022Seismic events miss important kinematically governed grain scale mechanisms during shear failure of porous rock
Catastrophic failure in brittle, porous materials initiates when smaller-scale fractures localise along an emergent fault zone in a transition from stable crack growth to dynamic rupture. Due to the rapid nature of this critical transition, the precise mic ...
NATURE PORTFOLIO2022Investigation of the effect of mineral dissolution on the geomechanical behaviour of geomaterials
Geotechnical engineering scenarios engaged in internal erosion or mineral dissolution were found worldwide, from CO2 sequestration projects to internal erosion of earth dams. Materials subjected to loss of solid phase from their internal fabric vary from s ...
EPFL2022Experimental quantification of 3D deformations in sensitive clay during stress-probing
Unique four-dimensional (4D) deformation data are collected during drained triaxial tests on intact specimens of a natural sensitive clay. This requires the development of a miniature triaxial cell for advanced stress path testing, specifically designed fo ...
ICE PUBLISHING2022On the effects of fluid pressure variations on rock-mass and fault mechanical behaviour
In the past 20 years, the growing interest in deep geo-reservoirs for purposes such as carbon storage, waste water disposal, or geothermal energy exploitation have led to large-volume fluid injections into the upper continental crust. These fluid injection ...
EPFL2021On predicting pore fluid pressure changes in unsaturated porous media subject to undrained processes
Lyesse Laloui, Alessio Ferrari, Angelica Tuttolomondo
Predicting the induced change of fluid pressure in an unsaturated porous medium during undrained loading/unloading processes is challenging because two different fluids (a liquid and a gaseous solution) and a mixture of solid particles are involved. The re ...
2021Shear Response of Wet Weak Carbonate Rock/Grout Interfaces Under Cyclic Loading
The development and construction of offshore wind farms requires the correct estimation of the friction that can be mobilised at the rock/grout interface. In conventional studies, the shear behaviour of a joint is usually investigated with laboratory tests ...
2021On the mechanical behavior of expansive porous media with consideration on chemical effects
Lyesse Laloui, Alessio Ferrari, Angelica Tuttolomondo
Experimental geomechanics highlights that the mechanical behavior of expansive porous media is variable depending on the pore water chemical composition. These porous media are typically characterized by clay particles, whose activity (Skempton, 1953) (and ...
2021