Advertisement

Crack Initiation and Propagation of Clays Under Indirect Tensile Strength Test by Bending Related to the Initial Suction

  • Lamine Ighil AmeurEmail author
  • Mahdia Hattab
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

The aim of this research is to analyze, by experimental approach, the impact of suction in the tensile strength and cracking phenomenon of unsaturated clayey soils samples. Through a bending tests, and a clay submitted to different level of suction (361 MPa, 110 MPa and 38 MPa), the approach consisted first in estimating the tensile strength which controls the initiation of tensile cracks. Then, using digital image correlation method, the propagation of cracks was precisely followed through the local strains development around the crack and close the crack tip.

Keywords

Tensile Strength Digital Image Correlation Tensile Crack Indirect Tensile Strength Tensile Strength Increase 
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.

References

  1. Ajaz A, Parry RHG (1975a) Stress-strain behaviour of two compacted clays in tension and compression. Geotechnique 25(3):495–512CrossRefGoogle Scholar
  2. Ajaz A, Parry RHG (1975b) Analysis of bending stresses in soil beams. Geotechnique 25(3):586–591CrossRefGoogle Scholar
  3. Bishop AW, Garga VK (1969) Drained tension tests on London Clay. Géotechnique 19:303–313CrossRefGoogle Scholar
  4. Fleureau JM, Kheirbek-Saoud S, Soemitro R, Taibi S (1993) Behaviour of clayey soils on drying-wetting paths. Can Geotech J 30(2):287–296CrossRefGoogle Scholar
  5. Hattab M, Hammad T, Fleureau JM (2014) Internal friction angle variation in a kaolin/montmorillonite clay mix and microstructural identification. Géotechnique 65(1):1–11CrossRefGoogle Scholar
  6. Katti A (2012) Etude expérimentale des fissurations dans les argilites de Bure et les argiles de synthèses soumises à des chargements statiques en flexion. Rapport de stage Master 2 MMSP, Université de Lorraine, Metz, FranceGoogle Scholar
  7. Lakshmikantha MR, Prat PC, Ledesma A (2012) Experimental evidences of size-effect in soil cracking. Can Geotech J 49(3):264–284CrossRefGoogle Scholar
  8. Taïbi S, Fleureau JM, Hadiwardoyo S, Kheirbek-Saoud S (2008) Small and large strain behaviour of an unsaturated compacted silt. Eur. J. Environ. Civ. Eng. 12(3):203–228CrossRefGoogle Scholar
  9. Tang GX, Graham J (2000) A method for testing tensile strength in unsaturated soils. Geotech Testing J 23(3):377–381CrossRefGoogle Scholar
  10. Wei X (2014) Etude micro-macro de la fissuration des argiles soumises à la dessiccation. Doctoral dissertation, Ecole Centrale Paris, Châtenay-Malabry, FranceGoogle Scholar
  11. Wei X, Hattab M, Bompard P, Fleureau JM (2016a) Highlighting some mechanisms of crack formation and propagation in clays on drying path. Geotechnique 66(4):287–300CrossRefGoogle Scholar
  12. Wei X, Duc M, Hattab M, Reuschlé T, Taibi S, Fleureau JM (2016b) Effect of decompression and suction on macroscopic and microscopic behavior of a clay rock. Acta Geotech 1–19, doi: 10.1007/s11440-016-0454-8

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Laboratoire d’Etude des Microstructures et de Mécanique des MatériauxMetzFrance

Personalised recommendations