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Kereo said:Hey everyone, is there a reason for calling it "drained behaviour" when the undrained shear strength test forces the sample to fail in an undrained manner?
I understand that in the test you can find the effective strength parameters through the pore pressure measured, but excess pore doesn't dissipate though.
I always thought that the total stress and effective stress behaviours in the undrained test determine undrained shear strength, which is shown as Ua/Ub in the figure above, and that the drained behaviour correlates to TSP line shown above, because NC clay gains strength after a very long time.