Nonlinear Creep Behavior and Viscoelastic-Plastic Constitutive Model of Rock-Concrete Composite Mass

Table 1

Basic physical parameters of rock and concrete specimens [23].

Specimens name		Diameter, d (mm)	Height, h (mm)	Density, ρ (kg/m^3)	Peak strength, σ-pc (MPa)	Elastic Modulus, E (GPa)	Axial peak strain, ε-A (%)	Circumferential peak strain, ε-C (%)
Rock specimens	R1	49.87	99.62	2281	35.41	6.82	0.39	0.22
	R2	50.14	99.47	2294	65.19	5.94	0.66	0.34
	R3	49.75	99.58	2257	99.35	6.42	0.98	0.98
	R4	49.57	99.87	2275	116.01	5.81	0.91	0.88
Concrete specimens	C1	49.04	99.56	2189	23.87	12.79	0.18	1.07
	C2	50.12	100.02	2145	70.19	13.45	0.42	0.59
	C3	49.75	100.15	2098	84.34	13.68	0.80	0.64
	C4	49.88	99.63	2136	97.33	13.82	1.70	2.00