Initial Shear Modulus of Remolded Sand-Clay Mixtures
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Volume 134, Issue 7
Abstract
This paper presents the dynamic properties of undisturbed and remolded clays and sand-clay mixtures based on the results of undrained hollow cylindrical torsional cyclic simple shear tests. The clays were obtained from different sites having a wide range of plasticity, covering fluvial and marine sediments. The main focus of this investigation is the dynamic properties of sand-clay mixtures whose properties are intermediate between those of clays and sands. The initial shear moduli are examined in terms of fines content, and conventional plasticity index. An equivalent plasticity index has been defined in the present investigation and a better correlation is obtained between the initial shear modulus of sand-clay mixtures and this parameter than with the conventional plasticity index. Further, a simple method has been suggested to determine the equivalent plasticity index based on the conventional consistency limit tests and grain size analysis. An empirical correlation for predicting the initial shear modulus is also proposed.
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Acknowledgments
The fourth author (S. V. Dinesh) would like to thank the NPEEE and DST (Seismology) Division (No. DST/23(534)/SU/2005) for the financial support extended to him.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 134 • Issue 7 • July 2008
Pages: 960 - 971
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© 2008 ASCE.
History
Received: Oct 24, 2006
Accepted: Feb 20, 2007
Published online: Jul 1, 2008
Published in print: Jul 2008
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