Correlation between and for Kaolinite Clay
Publication: Journal of Geotechnical Engineering
Volume 109, Issue 5
Abstract
The low-amplitude shear modulus, Go, of cohesive soils is needed for evaluation of dynamic response of soil masses or foundation systems. Previous studies have shown that there may be a correlation between Go and the static shearing strength, τmax, but the importance of the variables involved is not clear. An experimental program to evaluate the influence of average confining pressure, σ¯o, and overconsolidation ratio, OCR, on a kaolinite clay is described. Vac-Aire extruded samples of this clay were subjected to resonant column tests to determine Goand consolidated-undrained triaxial tests determined τmax, under similar confining conditions and strain rates. Results of this investigation showed that ratio Goτmax is not a constant value even for a single clay soil. A significant effect is produced by variations in σ¯o and OCR which can produce errors of ± 50%. Therefore, use of τmax to estimate Go is a crude procedure at best.
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Published In
Journal of Geotechnical Engineering
Volume 109 • Issue 5 • May 1983
Pages: 719 - 723
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Copyright © 1983 ASCE.
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Published online: May 1, 1983
Published in print: May 1983
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