Experimental Study on Viscoplastic Property of Unsaturated Reticulate Red Clay Used as an Engineered Barrier

Table 3

Viscoplastic parameter β values under different test conditions.

No.	σn (kPa)	(kPa)	Viscoplastic parameter β	Regression coefficients
R1-1	100	0	0.088	0.941
R1-2	200	0	0.098	0.920
R1-3	300	0	0.105	0.928
R1-4	400	0	0.115	0.945
R2-1	400	0	0.115	0.945
R2-2	400	50	0.122	0.929
R2-3	400	100	0.129	0.991
R2-4	400	200	0.143	0.966
R3-1	100	0	0.088	0.941
R3-2	100	50	0.091	0.967
R3-3	100	100	0.097	0.950