| Description | Cost of concrete (Rs.) | Cost per N/mm2 at 119 days (Rs.) | % decrease in cost per N/mm2 |
C1 | Without fly ash | 5710 | 71 | --- |
C2 | FA by MVM | 5580 | 60 | 15.3 |
C3 | FA by MDM | 5652 | 64 | 9.1 |
C4 | FA by MVM + SP | 5625 | 55 | 22.2 |
C5 | FA by MDM + SP | 5697 | 58 | 17.4 |