Shear Strength Deterioration of Compacted Residual Soils under a Wind Turbine due to Drying-Wetting Cycles and Vibrations

Table 3

Test schemes.

Factor	Compaction degree, K	Number of drying-wetting cycle, n	Confining pressure, σ3 (kPa)	Amplitude of cyclic load, Δσ1 (kPa)
Drying-wetting cycle	0.98	0	20, 40, 60	0
		1	20, 40, 60
		2	20, 40, 60
		3	20, 40, 60
		4	20, 40, 60
	0.95	0	20, 40, 60	0
		1	20, 40, 60
		2	20, 40, 60
		3	20, 40, 60
		4	20, 40, 60
	0.92	0	20, 40, 60	0
		1	20, 40, 60
		2	20, 40, 60
		3	20, 40, 60
		4	20, 40, 60
Drying-wetting cycle and vibration	0.98	0	20, 40, 60	±5.0 kPa (1000, 5000, and 10000 vibrations)
		2	20, 40, 60
		4	20, 40, 60