Hydro-mechanical Behaviour of Unsaturated Argillaceous Rocks

  • Bernardo CaicedoEmail author
  • Jairo Martin Espitia
  • Luis Vallejo
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)


The paper studies the hydromechanical behaviour of an argillaceous rock from the Colombian Andes. The influence of total suction on some physical/mechanical properties is analyzed on an argillaceous rock from the Colombian Andes. A wetting path was applied to the rocks using the vapor transfer technique. Uniaxial compression tests were conducted on specimens at different levels of suction. Also, microstructural observations are carried out using a Mercury Intrusion Porosimeter Apparatus. Results from the laboratory tests indicate that anisotropic deformations took place during the wetting path. Also, total suction contributed to a considerable and non-linear reduction in the peak compressive stress, elastic modulus and stress thresholds of the tested samples. Microstructural analysis indicated the influence of suction on the dominant pores.


Acoustic Emission Peak Stress Volumetric Strain Hydric State Rock Block 
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  1. Bieniawski ZT (1967) Mechanism of brittle rock fracture. Part I. Theory of the fracture process. Int J Rock Mech Min Sci Geomech Abs 4:395–406CrossRefGoogle Scholar
  2. Corkum AG, Martin CD (2007) The mechanical behaviour of weak mudstone (Opalinus Clay) at low stresses. Int J Rock Mech Min Sci 44:196–209. doi: 10.1016/j.ijrmms.2006.06.004 CrossRefGoogle Scholar
  3. Decagon-Devices I (2007) WP4 Dewpoint PotentiaMeter for models WP4 and WP4-T Operator’s Manual Version 5Google Scholar
  4. Delage P, Romero E, Tarantino A (2008) Recent developments in the techniques of controlling and measuring suction in unsaturated soils. In: Paper presented at the 1st European conference on unsaturated soils, Durham, United KingdomGoogle Scholar
  5. Diederichs MS, Kaiser PK, Eberhardt E (2004) Damage initiation and propagation in hard rock tunnelling and the influence of near-face stress rotation. Int J Rock Mech Min Sci 41:785–812CrossRefGoogle Scholar
  6. Eberhardt E, Stead D, Stimpson B, Read RS (1998) Identifying crack initiation and propagation thresholds in brittle rock. Can Geotech J 35:222–233CrossRefGoogle Scholar
  7. Espitia J, Caicedo B (2014) Mechanical behavior of unsaturated argillaceous rocks under uniaxial compression through acoustic emission. In: Khalili RKE (ed) Sixth international conference on unsaturated soils, UNSAT 2014, Sydney, Australia, pp 1597--1603Google Scholar
  8. Gens A (2013) On the hydromechanical behaviour of argillaceous hard soils-weak rocks. In: Paper presented at the 15th European conference on soil mechanics and geotechnical engineering, Athens, GreeceGoogle Scholar
  9. Pham QT, Vales F, Malinsky L, Nguyen Minh D, Gharbi H (2007) Effects of desaturation–resaturation on mudstone. Phys Chem Earth Parts A/B/C 32:646–655CrossRefGoogle Scholar
  10. Pineda JA, Alonso EE, Romero E (2014) Environmental degradation of claystones. Géotechnique 64:64–82CrossRefGoogle Scholar
  11. Tang CA, Hudson JA (2010) Rock failure mechanisms: illustrated and explained. CRC Press, New YorkGoogle Scholar
  12. Valès F, Nguyen Minh D, Gharbi H, Rejeb A (2004) Experimental study of the influence of the degree of saturation on physical and mechanical properties in Tournemire shale (France). Appl Clay Sci 26:197–207CrossRefGoogle Scholar
  13. Yang DS, Bornert M, Chanchole S, Gharbi H, Valli P, Gatmiri B (2012) Dependence of elastic properties of argillaceous rocks on moisture content investigated with optical full-field strain measurement techniques. Int J Rock Mech Min Sci 53:45–55CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Bernardo Caicedo
    • 1
    Email author
  • Jairo Martin Espitia
    • 1
    • 2
  • Luis Vallejo
    • 3
  1. 1.Department of Civil EngineeringUniversidad de Los AndesBogotáColombia
  2. 2.Mining Engineering DepartmentUPTCSogamosoColombia
  3. 3.Department of Civil and Environmental EngineeringUniversity of PittsburghPittsburghUSA

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