Pore Pressure Behavior of Ko‐Consolidated Clays

Abstract

Available triaxial compression data on anisotropically consolidated natural clays suggests that A sub f tends toward zero at high OCRs (overconsolidation ratios). This is contrary to common beliefs based on the behavior of isotropically consolidated clays that negative incremental pore pressures occur during triaxial compressive shear. The findings are consistent with a simplified effective stress interpretation, provided that a small cohesion intercept is included.