Silty Mudstone Mechanical Properties under Freeze-Thaw Cycles

Results reveal that under similar confining pressure, reducing temperature and increasing freeze-thaw cycles progressively amplify the degradation rate of P-wave velocity and specimen quality. Conversely, there is an exponential decline in elastic modulus values and peak stress. The internal friction angle and cohesion of silty mudstone also decrease exponentially with decreasing freezing temperature.

研究结果表明，在相同围压（confining pressure）条件下，降低温度与增加冻融循环（freeze-thaw cycles）次数会逐步加剧纵波速度（P-wave velocity）与试样质量的劣化速率。与之相反，弹性模量（elastic modulus）与峰值应力（peak stress）呈指数级衰减。粉砂质泥岩（silty mudstone）的内摩擦角（internal friction angle）与黏聚力（cohesion）也随冻结温度的降低呈指数型下降。