Table 2 Concrete mixture proportion.
From: A Unified Formula for Calculation of Crack Width and Spacing in Reinforced Concrete Beams
Mixture | Cement, (kg/m3) | Water, (kg/m3) | w/c | Aggregate (kg/m3) | Sand (kg/m3) | High-range water reducing admixture (kg/m3) | ||
|---|---|---|---|---|---|---|---|---|
5 to10 (mm) | 10 to 16 (mm) | 16 to 20 (mm) | ||||||
C30 | 378 (No.42.5) | 189 | 0.50 | 491 | 328 | 273 | 758 | 1.89 |
C40 | 473 (No.42.5) | 189 | 0.40 | 491 | 328 | 273 | 670 | 3.31 |
C50 | 473 (No.52.5) | 189 | 0.40 | 491 | 328 | 273 | 698 | 3.31 |
C60 | 630 (No.52.5) | 189 | 0.30 | 458 | 305 | 254 | 624 | 5.04 |