Down-hole collapse test system

Sandra Houston, Hisham H H Mahmoud, William N. Houston

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

An in-situ collapse test for collapsible soils was developed. The test is conducted in a borehole with a load applied to a loading plate at the base of the hole. Water is introduced, and the load-displacement response of the soil is monitored. An analysis of the stress and the degree of wetting encountered during this test was based on a combination of field investigation (empirical data) and finite-element analyses. These studies enabled the development of a technique by which the load-displacement data, obtained from the test, can be converted to stress-strain data. Simplified charts for interpretation of the in-situ test results are presented. A series of in-situ collapse tests was performed at a site known to exhibit wetting-induced collapse. A footing test, in which collapse settlements were induced, was also performed at this site. The recommended analysis of the in-situ test was used, and close agreement was obtained between estimated footing settlement and observed settlement.

Original languageEnglish (US)
Pages (from-to)341-349
Number of pages9
JournalJournal of geotechnical engineering
Volume121
Issue number4
StatePublished - Apr 1995

Fingerprint

Wetting
Soils
Boreholes
in situ test
footing
wetting
collapsible soil
Water
test
borehole
soil
water
in situ
analysis

ASJC Scopus subject areas

  • Engineering(all)
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Houston, S., Mahmoud, H. H. H., & Houston, W. N. (1995). Down-hole collapse test system. Journal of geotechnical engineering, 121(4), 341-349.

Down-hole collapse test system. / Houston, Sandra; Mahmoud, Hisham H H; Houston, William N.

In: Journal of geotechnical engineering, Vol. 121, No. 4, 04.1995, p. 341-349.

Research output: Contribution to journalArticle

Houston, S, Mahmoud, HHH & Houston, WN 1995, 'Down-hole collapse test system', Journal of geotechnical engineering, vol. 121, no. 4, pp. 341-349.
Houston S, Mahmoud HHH, Houston WN. Down-hole collapse test system. Journal of geotechnical engineering. 1995 Apr;121(4):341-349.
Houston, Sandra ; Mahmoud, Hisham H H ; Houston, William N. / Down-hole collapse test system. In: Journal of geotechnical engineering. 1995 ; Vol. 121, No. 4. pp. 341-349.
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