Advertisement

The Role of Anisotropy on the Volumetric Behaviour of Opalinus Clay upon Suction Change

  • Alberto MinardiEmail author
  • Eleonora Crisci
  • Alessio Ferrari
  • Lyesse Laloui
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

An experimental investigation to analyse the anisotropic volumetric response of shaly and sandy facies of Opalinus Clay upon suction variations is presented. Obtained results demonstrate the different behaviour of the tested facies to a wetting-drying cycle. The shaly facies exhibits higher water retention capacity and stronger volumetric response than the sandy facies. Anisotropic response is experienced by both facies with the strain perpendicular to bedding higher than in the parallel direction. The sandy facies exhibits a more pronounced anisotropic behaviour in particular during the drying phase. A detailed analysis of the response in the two directions with respect to the bedding orientation proves that the different anisotropic behaviour between the two facies is mainly caused by a different response parallel to bedding rather than perpendicular.

Keywords

Anisotropic Ratio Anisotropic Behaviour Water Retention Capacity Excavation Damage Zone Water Content Variation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

The support of the Swiss National Cooperative for the Disposal of Radioactive waste (NAGRA) for this research is acknowledged.

References

  1. Cardoso R, Romero E, Lima A, Ferrari A (2007) A comparative study of soil suction measurement using two different high-range psychrometers. Experimental unsaturated soil mechanics. Springer, Heidelberg, pp 79–93CrossRefGoogle Scholar
  2. Delle Piane C, Dewhurst D, Siggins A, Raven M (2011) Stress-induced anisotropy in brine saturated shale. Geophys J Int 184(2):897–906CrossRefGoogle Scholar
  3. Ferrari A, Favero V, Marschall P, Laloui L (2014) Experimental analysis of the water retention behaviour of shales. Int J Rock Mech Min Sci 72:61–70Google Scholar
  4. Ferrari A, Laloui L (2013) Advances in the testing of the hydro-mechanical behaviour of shales. In: Laloui L, Ferrari A (eds) Multiphysical testing of soils and shales. Springer, Heidelberg, pp 57–68CrossRefGoogle Scholar
  5. Fredlund DG, Rahardjo H (1993) Soil Mechanics for Unsaturated Soils. Wiley, New YorkCrossRefGoogle Scholar
  6. Leong EC, Tripathy S, Rahardjo H (2003) Total suction measurement of unsaturated soils with a device using the chilled-mirror dew-point technique. Géotechnique 53(2):173–182CrossRefGoogle Scholar
  7. Mazurek M (1999) Mineralogy of the opalinus clay. In: Results of the hydrogeological, geochemical and geotechnical experiments, performed in 1996 and 1997. Swiss National Geological and Hydrogeological Survey. Geological report 23, pp 15–18Google Scholar
  8. McLamore R, Gray KE (1967) The mechanical behavior of anisotropic sedimentary rocks. J. Eng. Ind. 89:62–73CrossRefGoogle Scholar
  9. Minardi A, Crisci E, Ferrari A, Laloui L (2016) Anisotropic volumetric behaviour of Opalinus Clay shale upon suction variation. Geotechnique Lett. 6:1–5CrossRefGoogle Scholar
  10. Niandou H, Shao JF, Henry JP, Fourmaintraux D (1997) Laboratory investigation of the mechanical behaviour of Tournemire shale. Int J Rock Mech Min Sci 34(1):3–16CrossRefGoogle Scholar
  11. Popp T, Salzer K (2007) Anisotropy of seismic and mechanical properties of Opalinus clay during triaxial deformation in a multi-anvil apparatus. Phys Chem Earth 32(8):879–888CrossRefGoogle Scholar
  12. Popp T, Salzer K, Minkley W (2008) Influence of bedding planes to EDZ-evolution and the coupled HM properties of Opalinus Clay. Phys Chem Earth 33:374–387CrossRefGoogle Scholar
  13. Salager S, François B, Nuth M, Laloui L (2013) Constitutive analysis of the mechanical anisotropy of Opalinus Clay. Acta Geotech 8(2):137–154CrossRefGoogle Scholar
  14. Soe AKK, Osada M, Takahashi M, Sasaki T (2009) Characterization of drying-induced deformation behaviour of Opalinus Clay and tuff in no-stress regime. Environ Geol 58(6):1215–1225CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Alberto Minardi
    • 1
    Email author
  • Eleonora Crisci
    • 1
  • Alessio Ferrari
    • 1
  • Lyesse Laloui
    • 1
  1. 1.Laboratory of Soil Mechanics (LMS)Swiss Federal Institute of Technology in Lausanne (EPFL)LausanneSwitzerland

Personalised recommendations