design mix
CONCRETE MIX DESIGN USING AMERICAN CONCRETE ASSOCIATION (ACI) ABSOLUTE VOLUME METHOD
Slump Range: 80-100mm
Water-Cement Ratio: 0.68
Mix Component Properties:
Cement Type:1 Specific Gravity: 3.15
Coarse Aggregate Nominal Maximum Particle Size: 25mm(1in.)
SSD Bulk Specific Gravity: 2.53
% Absorption Capacity: 3.47%
Dry-Rodded Density: 1.543 g/cm3
Fine Aggregate SSD Bulk Specific Gravity: 2.700
% Absorption Capacity: 3.54% Fineness Modulus: 3.09
1.Determine densities of all materials to be used: ρ = G x ρw
Material Specific
Gravity
x ρ w
Density (kg/m3)
Water
1 x 1000
1000
Cement
3.15
x 1000
3150
SSD Coarse Aggregate
2.53
x 1000
2530
SSD Fine Aggregate
4.01
x 1000
4010
Dry-rodded Coarse Aggregate
1543
2.Determine volume of water required.
Using Table 4a below, the mass of water required to make 1 m3 of mix can be selected.
Mass of water required to make 1 m3 of mix = 193 kg
3. Determine volume of air
Using Table 4c below, the volume of air in 1 m3 of non-air entrained concrete mix is selected.
Percent air entrapped = 1.50%
Volume of air = 1m3 x 0.015 = 0.015 m3
4. Determine volume of cement required.
Since from the table above, water-cement ratio by weight for non-entrained mix of 0.68 is required,
Using the density of cement(3150 kg/m3) and the calculated mass of cement, volume of cement required for the mix is:
5. Determine volume of dry-rodded coarse aggregate required
Using table 3, volume of dry-rodded coarse aggregate can be determined.
With the fineness modulus of 3.09 and nominal maximum aggregate size, volume of dry-rodded coarse aggregate required is 0.65.
6. Determine SSD volume of coarse aggregate
With the dry-rodded density of coarse aggregate, 1543 kg/m3,
7. Determine volume of fine aggregate
With SSD density of fine aggregate,
0.3055m3 x 4010 kg/m3 =1225.055 kg
Slump Range: 80-100mm
Water-Cement Ratio: 0.68
Mix Component Properties:
Cement Type:1 Specific Gravity: 3.15
Coarse Aggregate Nominal Maximum Particle Size: 25mm(1in.)
SSD Bulk Specific Gravity: 2.53
% Absorption Capacity: 3.47%
Dry-Rodded Density: 1.543 g/cm3
Fine Aggregate SSD Bulk Specific Gravity: 2.700
% Absorption Capacity: 3.54% Fineness Modulus: 3.09
1.Determine densities of all materials to be used: ρ = G x ρw
Material Specific
Gravity
x ρ w
Density (kg/m3)
Water
1 x 1000
1000
Cement
3.15
x 1000
3150
SSD Coarse Aggregate
2.53
x 1000
2530
SSD Fine Aggregate
4.01
x 1000
4010
Dry-rodded Coarse Aggregate
1543
2.Determine volume of water required.
Using Table 4a below, the mass of water required to make 1 m3 of mix can be selected.
Mass of water required to make 1 m3 of mix = 193 kg
3. Determine volume of air
Using Table 4c below, the volume of air in 1 m3 of non-air entrained concrete mix is selected.
Percent air entrapped = 1.50%
Volume of air = 1m3 x 0.015 = 0.015 m3
4. Determine volume of cement required.
Since from the table above, water-cement ratio by weight for non-entrained mix of 0.68 is required,
Using the density of cement(3150 kg/m3) and the calculated mass of cement, volume of cement required for the mix is:
5. Determine volume of dry-rodded coarse aggregate required
Using table 3, volume of dry-rodded coarse aggregate can be determined.
With the fineness modulus of 3.09 and nominal maximum aggregate size, volume of dry-rodded coarse aggregate required is 0.65.
6. Determine SSD volume of coarse aggregate
With the dry-rodded density of coarse aggregate, 1543 kg/m3,
7. Determine volume of fine aggregate
With SSD density of fine aggregate,
0.3055m3 x 4010 kg/m3 =1225.055 kg