The chemical components,mineral composition,and microstructure of Bayer red mud were analyzed by micro-measurements,such as X-ray diffraction( XRD),X-ray fluorescence( XRF),and a scanning electron microscope( SEM). On this basis,the mechanical properties of Bayer red mud with various hydraulic histories were studied with an unconfined compression strength test and a triaxial consolidated drained shear test.Meanwhile,the hydraulic characteristics were also studied by a transient hydraulic characteristic cycl...