Mechanical properties of Jintan mine rock salt under complex stress paths

Research highlights
► A series of rock salt has been tested under complex stress paths.
► Rock salt has no obvious destruction surface under high confining pressure.
► Under unloading confining pressure, the changing magnitude of stress required for rock failure is comparably less than that of triaxial compressive.
► Changing the maximum and average cyclic loading can affect the process of fatigue damage.
► The fatigue damage curve is controlled by complete stress-strain curve of static loading.