Mix ID | Specimens type | Compressive strength Age | 28 days compressive strength deviation from the control pure concrete | |
7 days MPa | 28 days MPa | |||
P.C | Cube | 18.7 | 19.8 | - |
Cylinder | 17.8 | 18.1 | - | |
C + 25%K | Cube | 16.9 | 21.2 | increased by 7.1% |
Cylinder | 14.7 | 17 | decreased by 6.1% | |
25%K + 1%Sp | Cube | 15.1 | 15.6 | decreased by 21.2% |
Cylinder | 15.3 | 18.7 | increased by 3.3% | |
25%K + 1.5%Sp | Cube | 17.6 | 18.1 | decreased by 8.6% |
Cylinder | 18.7 | 15.3 | decreased by 15.5% | |
25%K + 2%Sp | Cube | 12.4 | 15.2 | decreased by 23.2% |
Cylinder | 9.1 | 13 | decreased by 28.2% |