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ASTM Selected Technical Papers
Vane Shear Strength Testing in Soils: Field and Laboratory Studies
By
AF Richards
AF Richards
1
Adrian Richards Company
,
Aaslmeer,
The Netherlands
;
symposium chairman and editor
.
Search for other works by this author on:
ISBN-10:
0-8031-1188-6
ISBN:
978-0-8031-1188-2
No. of Pages:
384
Publisher:
ASTM International
Publication date:
1988

An evaluation is presented of results from about 450 tests obtained with an offshore in-situ vane during geotechnical investigations in the North Sea and off the west coast of India. The soils tested are normally consolidated and included silts and clays with differing carbonate contents. The strength values of the in-situ vane are compared with strength results from triaxial tests, laboratory vane, and Torvane tests. These data are also correlated with in-situ test results obtained with the piezocone penetrometer. The in-situ vane shear strength data show a small scatter, and good agreement was found with unconsolidated undrained (UU) triaxial test results. The rate of post peak reduction in soil strength, measured on the vane shear strength-rotation curve, appears to depend on plasticity. Based on this study it is recommended that the vane be rotated to a minimum of 40° for very plastic clays to approximately 150° for clays with low plasticity, to determine post-peak strength behavior with great accuracy. It is suggested that the undrained shear strength values determined with the in-situ vane may be of greater value than other undrained shear strength measurements for axial pile design purposes. This study also yielded encouraging estimates of the coefficient of lateral stress at rest K0 based on in-situ vane and triaxial test data.

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,”
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and
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,”
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, Vol.
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12.
Wilson
,
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Laboratory Vane Shear Tests and the Influence of Pore-Water Stresses
,”
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,
American Society for Testing and Materials
,
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,
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13.
Bishop
,
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and
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,
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,
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,
Edward Arnold
,
London
, 2nd ed.,
1962
, 227 pp.
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