Evaluation of the Effect of Sampler Size on Sample Disturbance in Sensitive Leda Clay

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DOIResolve DOI: http://doi.org/10.4224/20338222
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TypeTechnical Report
Series titleInternal Report (National Research Council Canada. Division of Building Research); no. DBR-IR-116
Physical description13 p.
AbstractThe Division of Building Research has undertaken a study of the geotechnical properties of the so-called "Leda" clay. This is an extremely sensitive post-glacial marine clay occurring extensively in the lowlands of the St. Lawrence and Ottawa valleys. In the course of this study, serious limitations have been found in the techniques of obtaining undistorted tube samples from boreholes. This report deals with the relative effectiveness of four conventional Shelby tube samplers. Since this study was made, it has been found that all tube samples fail to give strength results consistently comparable to shear strength determinations obtained by field vane testing. Hence the problem of sampling is still under review, and this report represents one stage in a long-term study. It is issued in the hope that it will prove useful to others concerned with the problem of obtaining samples of this clay.
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PublisherNational Research Council Canada
AffiliationNational Research Council Canada
Peer reviewedNo
NRC numberNRC-IRC-7867
NPARC number20338222
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Record identifierc1802237-c96c-4bff-aaa1-bbbbea0ec103
Record created2012-07-19
Record modified2017-06-29
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