POZZOCRETE 40 – Cement Replacement
Description
Pozzocrete 40 is a high-efficiency pozzolanic material, obtained by selection and processing of power station fly ashes resulting from the combustion of pulverised bituminous coal. Pozzocrete 40 is subjected to strict quality control.
General Information
| Presentation | Finely divided dry powder |
| Colour | Light grey |
| Bulk Weight | Aprox. 1.0 metric ton per cubic meter |
| Specific density | Aprox. 2.3 metric ton per cubic meter |
| Particle size | Maximum 25 % ROS on 45 micron sieve |
| Particle shape | Spherical |
| Package | 1 metric ton big-bags and bulk tankers |
Recommended uses
Concrete
Mass concrete to reduce the heat of hydration To enhance workability of concrete by partial sand replacement
Grout
General purpose grouts for use in earthworks for the treatment of rock cracks.
Recommended Dosages
The dosages of Pozzocrete 40 and the other mix constituents should be determined by appropriate mix design testing. They will depend on required mix properties, grade of cement, admixtures used, etc. The following figures are indicative.
Typical replacement levels with Pozzocrete 40
Percentage of total binder
Mass concrete 50%
Dosage
100 – 150 kg/m3
Typical concrete performance with 25% Pozzocrete 40
Workability
Setting Time
Long Term Strength
Early Strength (7 days)
Required Curing Period
Permeability Reduced
Sulfate Attack
Chloride Penetration
Heat of Hydration
Plastic Shrinkage
Improved
Increased 30 - 60 min
Increased 15% -20%
Reduces by 20%
8 to 10 Days
2 - 5 times
Substantially Reduced
Substantially Reduced
Substantially Reduced
Reduced