Research Article
Development of a Zero-Cement Binder Using Slag, Fly Ash, and Rice Husk Ash with Chemical Activator
Table 3
Strength activity index of pozzolans.
| | Materials | Strength activity at 7 days | Strength activity at 28 days | | Activity index | ASTM requirement | Activity index | ASTM requirement |
| | Slag | 100.44 | 95 for 120 grade | 103.88 | 95 for 100 grade | | FA | 75.36 | 75 for Class F | 88.07 | 75 for Class F | | RHA | 48.58 | — | 63.04 | — | | RHA (G) | 86.76 | — | 101.61 | — |
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