Abstract
The resistance obtained from static cone penetration tests is compared to the in situ vane shear strength, for the soft to firm clays in the St. Lawrence Lowlands.The average factor Nk, obtained on five sites, varies between values of 2.5–18.4. As a result of this study it is not possible to propose a unique value of Nk to be assigned to Champlain Sea clays. As pointed out by Schmertmann and confirmed in the present analysis, the correlation between field vane and static cone penetration tests must be defined for each site.The soft deposits of the St. Lawrence Lowlands are well suited for studies by means of static cone penetration tests, which are very effective for determining the stratigraphy on the basis of the variations of the point resistance and the friction ratio. [Journal translation]
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