| Type of mortars | Flexible strength/MPa | Compressive strength/MPa | ||
| 7 d | 28 d | 7 d | 28 d | |
| Plain | 6.59 | 7.56 | 49.6 | 56.4 |
| PC | 8.92 | 9.13 | 68.1 | 74.2 |
| SBT | 8.26 | 8.71 | 62.9 | 68.5 |