DP 63 – Cement Replacement
DP 63 is a high efficiency class F pozzolanic material confirming to EN 450, BS 3892, IS 3812 and ASTM C618, obtained by selection and processing of power station fly ashes resulting from the combustion of pulverised coal. DP 63 is subjected to strict quality control.
General Information
| Presentation | Finely divided dry powder |
| Colour | Light grey |
| Bulk Weight | Aprox. 0,90 metric ton per cubic meter |
| Specific density | Aprox. 2,30 metric ton per cubic meter |
| Particle size | 88% < 45 micron |
| Particle shape | Spherical |
| Package | 30 kg paper bags, 1 metric ton big-bags and bulk tankers |
Recommended uses
- Concrete: General purpose plain and reinforced structural concrete with 28 day strength levels up to M60. Special purpose concrete, such as mass concrete, pre-cast concrete, pumpable concrete, self-compacting and self-levelling concrete.
- Cement: To manufacture Blended cements (Portland Pozzolana Cement), such as sulphate resistant/marine resistant cement.
- Mortar: General purpose mortar for plastering and brick/block gluing Specialised mortars for gluing floor/wall tiles. Flowable mortars for use as structural fill in earthworks.
- Grout: General purpose grouts for use in earthworks for the treatment of rock cracks. Grouts for earthworks to be used in anchors.
Recommended dosages
The dosages of DP 63 and the other mix constituents should be determined by appropriate mix design testing. They will depend on required mix properties, cement grade and properties, admixtures used, etc. The following figures are indicative.
| Percentage of total binder | Dosage | |
| Low grade concrete (up to 30 MPa) | 35% | 80 – 140 kg/m3 |
| Medium grade concrete (30-60 Mpa) | 30% | 100 – 150 kg/m3 |
| Pre-cast concrete | 20% | 60 – 80 kg/m3 |
| Mass concrete | 50% | 100 – 150 kg/m3 |
| Pumpable concrete | 35% | 90 – 120 kg/m3 |
| Self compacting/levelling concrete | 40% | 150 – 200 kg/m3 |
| Portland Pozzolana Cement | 35% | |
| General purpose mortar (indoors) | 33% | – |
| General purpose mortar (outdoors) | 17% | – |
| Gluing mortars | 25% | – |
| Flowable mortars | 30% – 95% | – |
| Grouts for rock treatment | 33% | – |
| Grouts for anchors | 17% | – |
Typical concrete performance – Replacement 1:1
(compared to plain PC mixes)
| Better | Similar | Worse | |
| Water Demand | Reduced 5% – 8% | ||
| Workability | Improved | ||
| Setting Time | Increased 30 – 60 min | ||
| Long Term Strength | Increased 15% -20% | ||
| 28 day Strength | Similar | ||
| Early Strength (7 days) | Reduced 10% – 15% | ||
| Required Curing Period | Similar | ||
| Permeability | Reduced 2 – 5 times | ||
| Sulphate Attack | Reduced | ||
| Chloride Penetration | Reduced |