6533b826fe1ef96bd128522b
RESEARCH PRODUCT
Discussion on “Experimental Deformation of Opalinus Clay at Elevated Temperature and Pressure Conditions: Mechanical Properties and the Influence of Rock Fabric” of Schuster, V., Rybacki, E., Bonnelye, A., Herrmann, J., Schleicher, A.M., Dresen, G.
Alessio FerrariAlessio FerrariEleonora CrisciLyesse Lalouisubject
Clay rock Desiccation cracks Micro-fissuring Opalinus Clay Pore pressure generation Rate-dependent mechanical behaviour ShaleSettore ICAR/07 - GeotecnicaClay rockGeologyContext (language use)Strain rateGeotechnical Engineering and Engineering GeologyPore water pressureTemperature and pressureGeotechnical engineeringDeformation (engineering)Oil shaleGeologyCivil and Structural Engineeringdescription
AbstractThe testing procedure and results on saturated samples of Opalinus Clay in the work of Schuster et al. (Rock Mech Rock Eng https://doi.org/10.1007/s00603-021-02474-3, 2021) were conducted and presented using strain rates two to four orders of magnitudes higher than the rates needed to allow pore pressure equilibrium in the material, both in drained and undrained conditions. This leads to an erroneous estimation of the mechanical properties in saturated conditions. We discuss this aspect in the context of shale testing. We also discuss the effect of drying-induced fissuring on the mechanical properties of geomaterials tested in dry conditions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-10-05 | Rock Mechanics and Rock Engineering |