| Mix | Description | Ratio of flexural strength to compressive strength in % | |
| 7 days | 28 days | ||
| C1 | Without fly ash | 9.6 | 8.2 |
| C2 | FA by MVM | 9.3 | 7.9 |
| C3 | FA by MDM | 9.5 | 8.2 |
| C4 | FA by MVM + SP | 8.8 | 7.7 |
| C5 | FA by MDM + SP | 9.2 | 7.9 |