Table 2.
Composition of the synthesis mixes.
| Component, % (by weight) | |||||
|---|---|---|---|---|---|
| Synthesis mixes | BA-N | BA-WG-N | BA-WG-RM10-N | BA-WG-RM20-N | BA-WG-RM30-N |
| Alkali activator | NaOH 30% (by weight) | ||||
| Bottom ash | 66.67 | 56.67 | 46.67 | 36.67 | 26.67 |
| Waste glass | – | 10.00 | 10.00 | 10.00 | 10.00 |
| Red mud | – | – | 10.00 | 20.00 | 30.00 |
| Na2O (activator) | 7.75 | 7.75 | 7.75 | 7.75 | 7.75 |
| H2O (activator) | 25.58 | 25.58 | 25.58 | 25.58 | 25.58 |
| Water/solid (w/s) | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 |
| Na2O/solid (a/s) | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 |
| Molar ratios | |||||
| Na2O/SiO2 | 0.37 | 0.35 | 0.20 | 0.14 | 0.10 |
| Si2O/Al2O3 | 3.24 | 3.63 | 5.98 | 8.23 | 10.40 |
| H2O/M2O | 7.93 | 7.79 | 8.15 | 8.55 | 8.99 |
| M2O/Al2O3 | 1.12 | 1.28 | 1.20 | 1.12 | 1.04 |