Research Article
Improved Reactivity of Fly Ash-Slag Geopolymer by the Addition of Silica Fume
Table 6
Element dissolution concentrations of raw silica fume in NaOH solution (mg/L).
| Sample ID | Time | Si | Al | Ca | S |
| Silica fume 1 | 24 h | 169.4 | 2.895 | 0.183 | 6.087 | 48 h | 185.3 | 2.779 | 0.162 | 5.535 |
| Silica fume 2 | 24 h | 119.9 | 2.479 | 0.521 | 2.990 | 48 h | 136.6 | 2.413 | 0.175 | 1.329 |
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