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

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.