A Constitutive Model of Sandy Gravel Soil under Large-Sized Loading/Unloading Triaxial Tests

Table 6

Model parameters of the triaxial unloading test (unit: MPa).

σ1	a	b	Ei	Rf
0.2	0.014	1	71.43	0.42
0.4	0.0078	0.56	128.21	0.43
0.6	0.0062	0.41	162.60	0.43