Unstable behaviour of model Jamuna micaceous sand Available to Purchase

The instability of loose sands under undrained loading conditions has often been studied in the past. Sladen et al. (1985) observed that the undrained stress paths of contractant (loose) sand specimens consolidated isotropically to the same void ratio, but sheared at different initial confining pressures, converge to the same ultimate steady state at large strains. The peak deviatoric stresses of all the stress paths fall on an approximately straight line that passes through the steady-state strength of the specimens. They referred to this line as the collapse line. Lade (1993) also noted the unstable behaviour of loose contractant soils,...