Study of the Characteristics Mechanical Damage and Constitutive Model of Crushed-Rocks from High-Grade Highway in Permafrost Region

Table 2

Relationship between freeze-thaw coefficients and the number of freeze-thaw cycles for three types of crushed-rocks.

Category	Freeze-thaw coefficient
	0	5	10	15	20	30	50	70	100
Red sandstone	1.0	0.89	0.84	0.80	0.67	0.66	0.50	0.47	0.29
Cyan sandstone	1.0	0.96	0.95	0.95	0.95	0.90	0.88	0.85	0.78
Granite	1.0	0.93	0.92	0.90	0.89	0.88	0.79	0.79	0.79