Deformation and Strength Characteristics of Structured Clay under Different Stress Paths

Table 5

Strength indices of structured clay under different test conditions.

Stress path type		Stress path slope/ɳ	Total shear strength indices				Effective shear strength indices
			Before structural yielding		After structural yielding		Before structural yielding		After structural yielding
			c (kPa)	φ (°)	c (kPa)	φ (°)	(kPa)	(°)	(kPa)	(°)
Compression path	INP	ɳ = 3.0	40.64	7.28	21.60	10.19	38.21	9.94	25.47	12.64
	KCP	ɳ = ∞	42.61	8.15	23.25	10.78	31.91	13.91	13.33	17.93
	DEP	ɳ = −5.0	32.91	9.90	32.23	9.59	29.06	12.79	7.95	16.18
	DEP	ɳ = −1.5	34.49	9.39			22.11	11.37
	DEP	ɳ = −1.0	25.94	10.39			11.47	11.28
Tensile path	INP	ɳ = −5.0	32.93	8.05			22.82	12.53
	KCP	ɳ = ∞	33.52	7.17			28.81	9.04
	DEP	ɳ = 3.0	29.52	8.57			19.87	9.65
	DEP	ɳ = 1.0	27.90	7.82			18.21	8.08