The Strength of “Undisturbed” Clay Determined from Undrained Tests

CC Ladd; TW Lambe

doi:10.1520/STP30011S

SYMPOSIA PAPER Published: 01 January 1964

STP30011S

The Strength of “Undisturbed” Clay Determined from Undrained Tests

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Test data from unconsolidated-undrained (UU) and consolidated-undrained (CU) tests on tube samples of several saturated clays are compared, and the generally large discrepancies in undrained shear strength, S_u, are analyzed in terms of changes in effective stress during the sampling process. Data are presented to show that the residual effective stress of laboratory specimens of normally consolidated clay is typically less than one third of the value corresponding to perfect sampling, where only the in situ shear stresses are released.

Author Information

Ladd, CC

Massachusetts Institute of Technology, Cambridge, Mass.

Lambe, TW

Massachusetts Institute of Technology, Cambridge, Mass.

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Details

Developed by Committee: D18

Pages: 342–371

DOI: 10.1520/STP30011S

ISBN-EB: 978-0-8031-4568-9

ISBN-13: 978-0-8031-0048-0

The Strength of “Undisturbed” Clay Determined from Undrained Tests

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