Undrained Cyclic Response and Resistance of Saturated Calcareous Sand considering Initial Static Shear Effect

Table 2

Summary of undrained cyclic triaxial tests.

Series	(%)	(kPa)	(kPa)	SSR	CSR	Stress condition
I	70	0	20	0	0.1	Reversal	232
		0	25	0	0.125	Reversal	74
		0	30	0	0.15	Reversal	17
		0	40	0	0.2	Reversal	6
		20	30	0.1	0.15	Reversal	168
		20	45	0.1	0.225	Reversal	19
		20	50	0.1	0.25	Reversal	3
		50	50	0.25	0.25	Intermediate	53
		50	60	0.25	0.3	Intermediate	11
		50	70	0.25	0.35	Reversal	6
		80	70	0.4	0.35	Intermediate	14
		80	80	0.4	0.4	Intermediate	7
		-10	25	-0.05	0.125	Reversal	78
		-10	30	-0.05	0.15	Reversal	39
		-10	35	-0.05	0.175	Reversal	8
		-20	20	-0.1	0.1	Intermediate	210
		-20	25	-0.1	0.125	Intermediate	11
		-20	30	-0.1	0.15	Intermediate	8
		-40	20	-0.2	0.1	No reversal	57
		-40	25	-0.2	0.125	No reversal	16
		-40	30	-0.2	0.15	No reversal	8
II	30	0	15	0	0.075	Reversal	943
		0	20	0	0.1	Reversal	120
		0	25	0	0.125	Reversal	37
		0	30	0	0.15	Reversal	18
		24	30	0.12	0.15	Intermediate	61
		24	35	0.12	0.175	Intermediate	16
		24	40	0.12	0.2	Intermediate	5
		40	15	0.2	0.075	No reversal	175
		40	20	0.2	0.1	No reversal	9
		50	12.5	0.25	0.0625	No reversal	17
		50	15	0.25	0.075	No reversal	2
		-10	12.5	-0.05	0.0625	Reversal	382
		-10	15	-0.05	0.075	Reversal	180
		-10	20	-0.05	0.1	Reversal	11
		-20	10	-0.1	0.05	No reversal	246
		-20	12.5	-0.1	0.0625	No reversal	202
		-20	15	-0.1	0.075	No reversal	12
		-40	5	-0.2	0.025	No reversal	104
		-40	7.5	-0.2	0.0375	No reversal	13
		-40	10	-0.2	0.05	No reversal	2