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

Table 2

The test results of rock-concrete composite specimens with triaxial compression under different confining pressures [23].

Rock-concrete composite (triaxial compression)	Confining pressure, σ3 (MPa)	Peak axial deviatoric stress, σ-pads (MPa)	Elastic modulus, E (GPa)	Poisson’s ratio, μ	Axial peak strain, ε1 (%)	Circumferential peak strain, ε3 (%)
	0	30.56	8.74	0.12	0.59	1.18
	7	65.98	8.98	0.14	0.82	1.00
	15	94.07	11.48	0.17	1.06	0.94
		22	115.54	10.58	0.18	1.49	0.84