Abstract
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 language | English (US) |
|---|---|
| Pages (from-to) | 181-198 |
| Number of pages | 18 |
| Journal | Geotechnique |
| Volume | 49 |
| Issue number | 2 |
| DOIs | |
| State | Published - Apr 1999 |
| Externally published | Yes |
Keywords
- Clays
- Failure
- Glacial soils
- Laboratory tests
- Pore pressures
- Shear strength
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Earth and Planetary Sciences (miscellaneous)