Some observations on the measurement of sensitivity of clays

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TypeArticle
Journal titleProceedings of the American Society for Testing and Materials
ISSN0097-4153
Volume61
Pages12391249; # of pages: 11
Subjectshear strength; clay soils; shear testing equipment
AbstractSensitivity is based on actual measurements of the undrained shear strength of a clay. It should accordingly be a better criterion to describe soil properties than measures such as the liquidity index. No critical values of sensitivity have appeared, however, that would distinguish a clay subject to earthflows from one that is not. It may be that the present methods of measuring sensitivity lack the necessary precision. In this paper, four methods of measuring sensitivity, the field vane, the unconfined compression test, the laboratory vane, and the fall-cone test are described in some detail. A comparison is made between the results of the four methods in the light of observations made on a number of borings in Leda clay. The sensitivities ranged from 1 to over 300. It was found that there was considerable discrepancy between the results obtained by the four methods.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-157
NRC number6665
504
NPARC number20375965
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Record identifier4aa2f23e-1ec4-457d-84b9-868ab1016618
Record created2012-07-23
Record modified2016-05-09
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