Research Article
Improved Reactivity of Fly Ash-Slag Geopolymer by the Addition of Silica Fume
Table 1
Chemical composition of the binder materials.
| Oxide (wt.%) | Fly ash | Blast furnace slag (BFS) | Silica fume 1 (SF1) | Silica fume 2 (SF2) | Zirconium silica fume |
| CaO | 3.0 | 43.7 | 0.3 | 0.4 | 0.2 | SiO2 | 62.8 | 34.7 | 96.0 | 96.4 | 93.0 | Al2O3 | 21 | 12.2 | 0.5 | 0.7 | 0.8 | Fe2O3 | 7.4 | 0.5 | — | 0.2 | 0.6 | SO3 | 0.8 | 3.3 | 1.5 | 0.2 | — | MgO | 0.9 | 3.4 | 0.3 | 0.5 | 0.5 | P2O | 1.4 | 0.7 | 0.9 | 0.8 | 4.4 | K2O | 0.9 | 0.5 | 0.4 | 0.7 | 0.02 | TiO2 | 1.2 | 0.5 | — | — | — |
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