Undrained shear strength of a glacial clay overconsolidated by desiccation

G. Mesri, S. Ali

Research output: Contribution to journalArticlepeer-review


A study was conducted to determine the relationship between undrained shear strength and consolidation pressure in the compression and extension shear modes. The study used block samples of a Boston Blue clay crust, composed of quartz, feldspar, illite and chlorite. The value of in situ strength from the laboratory tests as well as the increase in undrained shear strength in the recompression range from the effective overburden pressure to the preconsolidation pressure are probably related to the microfissures in the desiccated stiff clay. Undrained shear strength of the desiccated stiff clay tended towards zero as the vertical consolidation pressure decreased starting from the in situ condition.

Original languageEnglish (US)
Pages (from-to)181-198
Number of pages18
Issue number2
StatePublished - Apr 1999
Externally publishedYes


  • Clays
  • Failure
  • Glacial soils
  • Laboratory tests
  • Pore pressures
  • Shear strength

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)


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