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Chemical composition of GBFS.
| Material | Content, wt. % |
|---|---|
| SiO2 | 26.56 |
| CaO | 56.35 |
| MgO | 6.42 |
| Al2O3 | 5.92 |
| Na2O | 1.07 |
| K2O | 0.29 |
| TiO2 | 2.37 |
| MnO | 0.18 |
| S | 0.32 |
| Fe2O3 | 0.33 |
| SrO | 0.14 |
| P2O5 | <0.01 |
| ZrO2 | 0.03 |
| Co3O4, V2O5, Cr2O3, Nd2O3, WO3, Ta2O5, Nb2O5, Sc2O3, Y2O3, BaO, CuO | <0.01 |
