Table 3.
Mixture proportions of cementitious geopolymer pastes for LDM applications.
| Formulation ID | Metakaolin (wt %) | Alkaline Activator (wt %) | Bentonite (wt %) | Water (wt %) | Spirulina platensis (wt %) | Tetraselmis suecica (wt %) | Lignin (wt %) |
|---|---|---|---|---|---|---|---|
| G-0 | 37.6 | 30.0 | 22.6 | 9.8 | - | - | - |
| G-S1 | 37.0 | 29.5 | 22.2 | 10.6 | 0.6 | - | - |
| G-S3 | 36.2 | 28.9 | 21.8 | 11.4 | 1.7 | - | - |
| G-S5 | 35.5 | 28.3 | 21.3 | 12.1 | 2.8 | - | - |
| G-T1 | 37.0 | 29.5 | 22.2 | 10.6 | - | 0.6 | - |
| G-T3 | 36.2 | 28.9 | 21.8 | 11.4 | - | 1.7 | - |
| G-T5 | 35.5 | 28.3 | 21.3 | 12.1 | - | 2.8 | - |
| G-L1 | 37.0 | 29.5 | 22.2 | 10.6 | - | - | 0.6 |
| G-L3 | 36.2 | 28.9 | 21.8 | 11.4 | - | - | 1.7 |
| G-L5 | 35.5 | 28.3 | 21.3 | 12.1 | - | - | 2.8 |
| U-S5 | 47.7 | 38.0 | 10.4 | 0.7 | 3.1 | - | - |