Laboratory and field measurements of the small-strain shear modulus of a Piedmont residual soil were compared to gain a better understanding of mechanisms affecting stiffness. Resonant column tests were performed to study influences of void ratio, overconsolidation ...

Critical state models are highly successful in reproducing the behavior of soft clays as far as the major differences between elastic and plastic behavior are concerned. However, they are not able to model the non-linear behavior of soils at small strains. ...