Effect of sampling, size, and storage on test results for marine clay

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TypeArticle
Journal titleASTM Special Technical Publication
ISSN0066-0558
Issue483
Pages121131; # of pages: 11
Subjectmarine clay; consolidated soils; triaxial tests; shear strength; marine clays; sampling; consolidation test; triaxial tests; shear strength; pore water pressure, storage, evaluation, tests; sol consolide; essai triaxial; resistance au cisaillement
AbstractConsolidation tests on a soft marine clay formation indicated that it was normally consolidated when the tests were performed on cores obtained with a 2-in.-diameter (54- mm) tube sampler and overconsolidated by 0.16 tons/ft[2] (kg/ cm[2]) when the tests were performed on cores obtained with a 5-in.-diameter (124-mm) tube sampler. From comparative tests on 20, 40, and 60-cm[2] test specimens trimmed from a block of stiff overconsolidated marine clay, the maximum preconsolidation pressures were measured on the 40-cm[2] size. Storing the block sample in a humid room at 55 F for one and a half years decreased the measured preconsolidation pressure. Coating the consolidometer rings with Teflon and molybdenum-disulphide-based grease was effective in reducing side friction.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-466
NRC number11754
2590
NPARC number20373908
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Record identifier27caac01-49b3-4352-9a36-204f4c172e46
Record created2012-07-23
Record modified2016-05-09
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