Study of rock stress-strain relationship under uni-axial compression

Disturbed state concept theory (DSC) utilizes constitutive models to characterize material responses. The actual responses are weighted via appropriate constitutive values. Both DSC and RMT150B rock experiment system provides us continuous and stable curve of stress-strain including the softened part of it. In uni-axial compression experiments of rock, the specimen keeps in a continuous state within a certain scale of strain values. The description of stress-stain relationship keeps pace with the DSC theoretical basis while the compaction point provides initial value for curves of stress-strain.