Abstract
The dilatometer can be used to obtain drained shear strength parameters for soft clay. The theory, as is the case of most derivations for laboratory and in situ tests conducted in soils, is applicable to isotropic, homogeneous soils and assumes plane strain conditions. Practicing engineers should always check reasonableness of parameters derived from in situ or laboratory tests, or empirical relationships. Empirical correlations are also used to convert in situ test results to unit weights. Strength parameters relevant to soft clay including undrained and drained parameters are discussed. The derivation from in situ and laboratory tests as well as empirical and semi-empirical means are discussed in detail. Soil sensitivity is an important consideration in soft clays subjected to ground improvement. It is the ratio of the undisturbed to disturbed shear strength and can be approximated as the ratio of the peak shear strength to the residual shear strength.
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Publication Name
Soft Clay Engineering and Ground Improvement
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ISBN/ISSN
978-1-138-31653-9
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Pages Count
31
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Publisher
CRC Press
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Publisher Location
Abingdon, UK
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EISSN
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DOI
10.1201/9780429455544-5