Fig. 4
From: Macro and micro damage characteristics of Red-bed sandstone in Urumqi under freeze–thaw cycles
Laboratory equipment. (a) Low temperature freeze-thaw constant temperature experiment box; (b) AP-608 type porosity and permeability instrument; (c) D8 ADVANCE series X-ray powder diffractometer; (d) The German Diondo d2 universal micro-nano CT system; (e) MTS E45.605 mine rock mechanical property test system.
