Consolidation under an isotropic total stress increase: part I, analysis for compressible constituents

The response of a fluid-saturated porous body to a rapid change in external pressure is analysed using the theory of linear poroelasticity, accounting for compressible constituents. Because water is more compressible than most mineral grains, the sample initially undergoes undrained deformation accompanied by a negative excess pore pressure (suction). Subsequently, external fluid diffuses into the body, the effective compressive stresses relax,...