Experimental Investigation on the Shear Characteristics of Frozen Silty Clay and Grey Relational Analysis

In the spring thawing season, decrease in strength of frozen soil caused by temperature may lead to slope instability. Therefore, researchers have studied relationship between and freeze-thaw zone. However, previous studies considered impact on strength, but less research shaping temperature. direct shear tests were performed specimens with different temperatures (i.e., −5, −2 1 °C) water contents 9, 16, 23%) at −2, −7 −12 °C). The results indicated that: stress-strain curves under test conditions exhibited strain softening characteristics; index decreased increasing temperature; effect cohesion was greater than that internal friction angle; mechanical mechanism zone related unfrozen content specimen. addition, grey correlation analysis showed had greatest index, while least index. relational grade 0.5, indicating not negligible.