Research Article
Short-Term Gradation Loading Creep Properties and Failure Characteristics of High-Strength Fly Ash Concrete for Underground Engineering
Table 6
Accumulated creep (εcp+) of concrete with various fly ash replacement ratios (m) at different stress levels (σsp).
| | m = 0 wt% | σsp (MPa) | 16.8 | 22.4 | 28.0 | 33.7 | 39.3 | 44.9 | 50.5 | | εcp + (με) | 9.0 | 21.6 | 35.9 | 56.9 | 80.8 | 144.8 | 207.4 |
| | m = 20 wt% | σsp (MPa) | 20.1 | 26.8 | 33.5 | 40.2 | 46.9 | 53.6 | 60.3 | | εcp + (με) | 7.5 | 17.6 | 28.3 | 42.6 | 62.1 | 89.5 | 138.6 |
| | m = 35 wt% | σsp (MPa) | 18.6 | 24.8 | 31.0 | 37.2 | 43.4 | 49.6 | 55.8 | | εcp + (με) | 8.6 | 16.7 | 26.3 | 39.9 | 58.8 | 80.2 | 140.5 |
| | m = 50 wt% | σsp (MPa) | 16.6 | 22.1 | 27.6 | 33.2 | 38.6 | 44.2 | — | | εcp + (με) | 3.8 | 8.6 | 14.0 | 23.5 | 38.5 | 96.5 | — |
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