Test number | Design strength level | Cementitious material (kg/m3) | Fine aggregate (kg/m3) | Machine-made sand substitution rate (%) | Coarse aggregate (kg/m3) | Water (kg/m3) | Water reducing agent dosage (%) | |
Natural sand | Machine-made sand | |||||||
20 | C25 | 305 | 775 | 0 | 0 | 1120 | 165 | 1.75 |
21 | C20 | 275 | 556.5 | 238.5 | 30 | 1120 | 170 | 1.95 |
22 | C20 | 275 | 397.5 | 397.5 | 50 | 1120 | 170 | 2.2 |
23 | C25 | 305 | 542.5 | 232.5 | 30 | 1120 | 165 | 2.0 |
24 | C25 | 305 | 387.5 | 387.5 | 50 | 1120 | 165 | 2.0 |
25 | C30 | 335 | 528.5 | 226.5 | 30 | 1120 | 160 | 2.1 |
26 | C30 | 335 | 377.5 | 377.5 | 50 | 1120 | 160 | 2.4 |