Experimental Study on Mechanical Properties of Freeze-Thaw Damaged Red Sandstone under Combined Dynamic and Static Loading

Table 3

a and b values of strength and strain rate of samples with different freeze-thaw cycles.

	Freeze-thaw cycles	0	10	20	30
Axial pressure 0 MPa	a	22.51	9.61	5.15	1.33
	b	0.0122	0.0162	0.0179	0.0264
Axial pressure 5 MPa	a	24.44	17.33	13.89	6.40
	b	0.0115	0.0122	0.0110	0.0135