| Formulations | Materials | Compressive Strength@7 days in water r (MPa) | Compressive Strength@7 days in air R (MPa) | Rapport r/R |
| F1 | Gneiss | 4.9 | 5.81 | 0.84 |
| F2 | Gneiss+ 2% filler | 5.00 | 5.90 | 0.85 |
| F3 | Gneiss + 2% filler + 2% cement | 5.80 | 7.00 | 0.83 |
| F4 | Basalt | 5.3 | 6.70 | 0.79 |