Comparison of undrained shear strentgh results obtained by different test methods in soft clays

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TypeArticle
Journal titleCanadian Geotechnical Journal
ISSN0008-3674
Volume17
Issue3
Pages369381; # of pages: 13
Subjectsoft clay; shear strength; test procedures
AbstractThe Cambridge self-boring pressuremeter and the Norwegian Geotechnical Institute field vane apparatus have been used at three sites of different subsoils. Two of the sites, South Gloucester and National Research Council of Canada grounds, are located in Leda clay in the Ottawa area. The third site features a highly plastic lacustrine clay in northwestern Quebec. At the site tests were conducted beside and under a fill that had undergone 1 m of surface settlement. At all three sites, the pressuremeter yields higher strengths than the field vane apparatus. Conventional and special laboratory tests were conducted on large diameter tube or block samples from South Gloucester. It is found that the conventional triaxial compressive strength is intermediate between the pressuremeter and the field vane strengths. In accounting for the strength discrepancy, factors such as anisotropy, stress path, and disturbance have been studied in the light of the results of the special tests.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-913
NRC number18422
84
NPARC number20331675
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Record identifier9ba42a45-4980-49a0-bfea-0149bff8b1c0
Record created2012-07-18
Record modified2016-05-09
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