Table 4.
Activity index of tested fly ashes.
| Composition | fc,28, MPa | AI28 | fc,90, MPa | AI90 |
|---|---|---|---|---|
| Ref. | 44.4 | - | 50.8 | - |
| SFA | 42.7 | 96.2 | 54.2 | 106.8 |
| BFA | 32.1 | 72.3 | 36.6 | 72.0 |
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