Influence of Intermediate Principal Stress on Undrained Behavior of Intact Clay under Pure Principal Stress Rotation

Table 3

PWP increment of series 1.

PWP increment Δ𝑢/kPa
Test no.	Cycles	𝛼=0^∘--90^∘	𝛼=90^∘--180^∘	∑
RS3700	Δ𝑢cycle1	3.03	28.96	31.99
	Δ𝑢cycle2	−10.77	25.61	14.84
RS3725	Δ𝑢cycle1	12.7	32.78	45.48
	Δ𝑢cycle2	−5.49	27.49	22
RS3750	Δ𝑢cycle1	6.33	33.04	39.37
	Δ𝑢cycle2	−13.28	33.09	19.81
RS3775	Δ𝑢cycle1	14.28	32.73	47.01
	Δ𝑢cycle2	−1.15	29.49	28.34
RS3710	Δ𝑢cycle1	9.46	34.82	44.28
	Δ𝑢cycle2	−13.75	35.13	21.38