Laboratory investigation on the mechanical behavior of ice-saturated frozen loess

作     者：XiangTian Xu YuanMing Lai JinYi Chai CaiXia Fan 

作者机构：Institute of Transportation Inner Mongolia University State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2014年第6卷第4期

页      面：314-321页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Foundation of China (41301072, 41230630,41101068) National Key Basic Research Program of China (973 Program No. 2012CB026102) Natural Science Foundation of Inner Mongolia (2013MS0702) the Program of Higher-level talents of Inner Mongolia University (30105-125146) the Open Project Program of the State Key Laboratory of Frozen Soil Engineering (SKLFSE201208) 

主　　题：strength elastic modulus ice-saturated frozen loess confining pressure damage 

摘      要：To investigate the mechanical properties of ice-saturated frozen soil, a series of triaxial tests under various confining pressures（0.5 to 9.0 MPa） on ice-saturated frozen loess with ice content of 23.7% were carried out at a temperature-6 °C, and at 1.25 mm/min of loading rate. The triaxial tests include two loading modes, one with monotonic loading（i.e., triaxial compression）, and another with static cycle loading. The test results under triaxial compression show that the strength and deformation behaviors of ice-saturated frozen loess are affected by confining pressure. According to the test results of triaxial loading-unloading cycle test, the elastic modulus evolution with the number of cycles under different confining pressures are analyzed.