Research Article
Oct 1974
Classification of Argillaceous Soils and Rocks
Publication: Journal of the Geotechnical Engineering Division
Volume 100, Issue 10
Abstract
A distinction is made between clays and mudstones on the basis of the loss of undrained strength of cylindrical specimens immersed freely in water. Clays are weaker at the outset and lose more of their strength more readily than mudstones. On the basis of the rate of strength reduction a further distinction can be made between hard clays and stiff clays. Many clay-shales fit into the hard-clay category. Index tests based upon the amount and rate of slaking are also presented. The amount of slaking is adequately indicated by the liquid limit. The suggested classification and index tests are supported by substantial experimental data.
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Published In
Journal of the Geotechnical Engineering Division
Volume 100 • Issue 10 • October 1974
Pages: 1137 - 1156
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Oct 1974
Published online: Feb 10, 2021
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Norbert R. Morgenstern, M.ASCE
Prof. of Civ. Engrg.; Univ. of Alberta, Edmonton, AB, Canada
Kurt D. Eigenbrod
Soils Engr.; R.M. Hardy and Assoc., Edmonton, AB, Canada
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