ACI Method of Concrete Mix Design
ACI Method of Concrete Mix Design
ACI Method of Concrete Mix Design
Required Data:
Before starting concrete mix design, basic information on raw materials shall be prepared
which include:
Sieve analyses of fine and coarse aggregates.
Unit weight (dry rodded density) of coarse aggregate.
Bulk specific gravities and absorptions or moisture content of aggregates.
Mixing-water requirements of concrete developed from experience with available
aggregates.
Specific gravities of Portland cement and other cementitious materials, if used.
Relationships between strength and water-cement ratio or ratio of water-to-cement
plus other cementitious materials, for available combinations of cements, other
cementitious materials if considered, and aggregates.
Slump value, mm
Construction type
Minimum Maximum*
Mass concrete 25 50
Approximate Air
3 2.5 2 1.5 1 0.5 0.3 0.2
content Quantity, %
Table 3. Approximate mixing water (Kg/m3) and air content for different slumps and
nominal maximum sizes of aggregates for air content concrete
Recommended average total air content (%) for different level of exposure
Fig.5. Cement