Inputs
Method (ACI 211.1)
- Required average f'cr = f'c + 1.34σ (or 8.3 MPa if no σ). Default σ=0 → f'cr = f'c + 8.5.
- w/c from Abrams' table → typically w/c = 0.45 for f'c=28 MPa (non-air-entrained).
- Water content from slump and Dmax (approximate Table 6.3.3). Cement = water / (w/c).
- Coarse aggregate vol. = bca·(unit-vol). Fine aggregate by absolute volume balance.
Results
f'cr (target avg)—
w/c ratio—
Water (kg/m³)—
Cement (kg/m³)—
Coarse Agg (kg/m³)—
Fine Agg (kg/m³)—
Air content—
Total mass—