Experimental Study on Main Physical Parameters Controlling Shear Strength of Unsaturated Loess

Table 4

Properties of sandy silt and direct shear test results.

Clay content (%)	Dry density (g/cm^3)	Void ratio	Internal friction angle (°)	Cohesion (kPa)
3	1.8	0.494	32.30	3.80
5	1.8	0.494	31.68	3.75
10	1.8	0.494	29.45	3.50
20	1.8	0.494	28.18	3.40
25	1.8	0.494	27.44	0.60
30	1.8	0.494	28.34	4.75
40	1.8	0.494	34.20	7.85