TY - Journal of Yangtze River Scientific Research Institute A1 - ZHU Zhen-de, Semerjan Memetyusup, FANG Ruo-jin, NI Xiao-hui T1 - Unloading Strength Characteristics and Damage Characteristics of Sandstone under Freeze-thaw Cycles Y1 - 2018-03-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 1 EP - 5 VL - 35 IS - 3 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20171094 ER -