Suitability of swelling and collapse theory proposed based on virgin compression surface

This study investigates the suitability of swelling and collapse theory proposed based on a constitutive virgin compression surface (VCS) developed within modified Monash Peradeniya Kodikara (MPK) framework. The MPK approach incorporates net stress, void ratio, moisture ratio as state variables to interpret swelling-collapse behavior unsaturated soils. soil selected for this research was an expansive Quaternary age basaltic residual clay located in Victoria, Australia. experimental program included testing compacted specimens stabilized with lime at optimum content (OLC). OLC obtained potential. Static compaction tests were conducted untreated lime-treated samples establish VCS propose relationship between stress. Next, 1-D consolidation laboratory carried out investigate compare mechanism well-established suction-based theories content-based research. response through both very close which verified approach, being Modified also investigated application suction-controlled data extracted from relevant literature novelty is proposing validating framework conversion results two different partial volumetric clay. Finally, new method estimate sample wetting without need VCS.