The Effect of Overconsolidation on the Behaviour of Clays During Shear

Synopsis A series of drained and undrained triaxial compression tests have been made on samples of two clays in order to study the effects of consolidation history. The manner in which the strength and pore pressure or volume changes during shear vary with the degree of overconsolidation are recorded, and the differences in strength in the drained and undrained tests are compared. Afin d'etudier les effets du developpement du a la consolidation, on a fait sur des echantillons de deux especes d'argile une serie d'essais de la compression triaxiale drainee et non drainee. On a note la facon dont la resistance et la pression interstitielle ou les changements de volume pendant le cisaillement varient en proportion avec le degre de surconsolidation; et on a compare les variations de la resistance dans les essais draines et non draines.