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

Figure 8

Failure mode of rock-concrete composite specimen under different confining pressures. (a) 0 MPa. (b) 7 MPa. (c) 15 MPa. (d) 22 MPa.

(a)

(b)

(c)

(d)