Research Article
Nonlinear Creep Behavior and Viscoelastic-Plastic Constitutive Model of Rock-Concrete Composite Mass
Table 4
The physical parameters of rock-concrete composite specimens and creep test results under different confining pressures.
| | Rock-concrete composite (triaxial creep) | Confining pressure, σ3 (MPa) | Diameter, d (mm) | Height, h (mm) | Density, ρe (kg/m3) | Failure stress, σ-fs (MPa) | Instantaneous strain, εi (%) | Total strain, εt (%) | εi/εt (%) | | 0 | 49.95 | 99.96 | 2358 | 18.33 | 0.02 | 0.28 | 7 | | 7 | 49.99 | 100.05 | 2389 | 39.59 | 0.14 | 0.53 | 26 | | 15 | 49.97 | 100.02 | 2331 | 37.63 | 0.20 | 0.51 | 39 | | 22 | 49.98 | 99.98 | 2338 | 34.65 | 0.25 | 0.68 | 36 |
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