| Mortar | Mean flexural strength (MPa) | Mean compressive strength (MPa) |
| M1 | 6.4 | 45.2 |
| M2 | 6.1 | 42.8 |
| M3 | 4.0 | 15.4 |
| M3α | 3.9 | 18.9 |
| ML1 | 3.4 | 20.0 |
| ML1α | 3.7 | 20.0 |
| ML2 | 4.3 | 21.9 |
| ML2α | 4.4 | 23.6 |
| ML3 | 2.4 | 13.3 |
| ML3α | 2.5 | 13.0 |
| ML4 | 3.8 | 18.7 |
| ML4α | 3.8 | 18.0 |