A comparative study between the NGI direct simple shear apparatus and the Mikasa direct shear apparatus

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Title: A comparative study between the NGI direct simple shear apparatus and the Mikasa direct shear apparatus
Authors: Hanzawa, Hideo
Nutt, Nigel
Lunne, Tom
Tang, Y.X.
Long, Michael (Michael M.)
Permanent link: http://hdl.handle.net/10197/3254
Date: Feb-2007
Abstract: A comparative study of the NGI Direct Simple Shear Test (DSST) and the Mikasa Direct Shear Test (DST) is reported. Samples from Norwegian Drammen clay and Japanese Ariake clay were subjected to both types of test. An evaluation of these test results and a theoretical consideration on the different shearing mechanisms has shown that although the DST give generally higher stiffness and strength than the DSST, these differences can mainly be accounted for by the different shearing mechanisms and shearing rates. Sample disturbance due to transportation and handling may also be the reason for some of the difference. Tests on undisturbed and remoulded Drammen clay consolidated to stresses much higher than the in situ effective overburden stress give almost identical results. Thus the effects of sample disturbance and in situ structure in the clay were eradicated.
Funding Details: Not applicable
Type of material: Journal Article
Publisher: Japanese Geotechnical Society
Copyright (published version): 2007 The Japanese Geotechnical Society.
Keywords: Soft clays;Laboratory tests;Direct shear test;Direct simple shear test;Sample disturbance
Subject LCSH: Shear strength of soils--Testing--Evaluation
Soils--Sampling
Clay--Testing
DOI: 10.3208/sandf.47.47
Language: en
Status of Item: Peer reviewed
Appears in Collections:Urban Institute Ireland Research Collection
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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