Preconsolidation pressure from piezocone tests in marine clays

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TypeArticle
Journal titleGeotechnique
ISSN0016-8505
Volume37
Issue2
Pages177190; # of pages: 14
Subjectmarine clay; stresses; laboratory testing; yield envelopes; vertical yield stress; porewater pressure; foundation designs; eastern canada; piezocone penetrometer; marine clay deposits; stress history; elasto-plastic soil behaviour; overconsolidated (oc) soil; contrainte (mécanique)
AbstractPiezocone penetration tests were carried out at five sites in marine clay with overconsolidation ratios ranging from 1. 3 to 4.8. A simple model for the behaviour of these clays indicates that the effective vertical yield stress mobilized along the cone axis during penetration is equal to the difference between the actual induced total vertical stress in the soil and the total porewater pressure. The actual induced total vertical stress can be derived from piezocone test data. Theoretically the ratio of the vertical yield stress inferred from piezocone results and the preconsolidation pressure should correlate with the overconsolidation ratio. This hypothesis is supported by the field laboratory investigations presented in this study.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierIRC-P-1551
NRC number29196
1266
NPARC number20386522
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Record identifierf6c678b4-df9d-4649-8e53-338bdee7bed1
Record created2012-07-25
Record modified2016-05-09
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