The use of a field vane apparatus in sensitive clay

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Journal titleASTM Special Technical Publication
Pages4153; # of pages: 13
AbstractThe extremely sensitive deposits of post-glacial marine clay in the St. Lawrence lowlands have presented major difficulties in obtaining adequate undisturbed samples for a reliable determination of shear strength. To overcome this problem, a simple field vane apparatus was devised which was readily adaptable to existing drilling equipment. This paper describes the apparatus and outlines the method of testing that has been used in the field. Shear strength values obtained are compared with those obtained from tube samplesfrom several test holes in Leda clay. The influence of such factors as the area ratio of the vane and rod friction are discussed along with its use as a measure of sensitivity. It is concluded that the field vane device offers a more reliable criterion for shear strength of the clay than determinations made from tubesamples. Advantages and restrictions on its use are also considered.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number4490
NPARC number20386527
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Record identifierd4c142fe-0e78-4db8-be01-8548e8ed9e68
Record created2012-07-25
Record modified2016-05-09
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