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

PresentationFinely divided dry powder
ColourLight grey
Bulk WeightAprox. 0,90 metric ton per cubic meter
Specific densityAprox. 2,30 metric ton per cubic meter
Particle size88% < 45 micron
Particle shapeSpherical
Package30 kg paper bags, 1 metric ton big-bags and bulk tankers

Recommended uses

  1. 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.
  2. Cement: To manufacture Blended cements (Portland Pozzolana Cement), such as sulphate resistant/marine resistant cement.
  3. 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.
  4. 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 binderDosage
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 concrete20%60 – 80 kg/m3
Mass concrete50%100 – 150 kg/m3
Pumpable concrete35%90 – 120 kg/m3
Self compacting/levelling concrete40%150 – 200 kg/m3
Portland Pozzolana Cement35%
General purpose mortar (indoors)33%
General purpose mortar (outdoors)17%
Gluing mortars25%
Flowable mortars30% – 95%
Grouts for rock treatment33%
Grouts for anchors17%

Typical concrete performance – Replacement 1:1

(compared to plain PC mixes)
Water DemandReduced 5% – 8%
Setting TimeIncreased 30 – 60 min
Long Term StrengthIncreased 15% -20%
28 day StrengthSimilar
Early Strength (7 days)Reduced 10% – 15%
Required Curing PeriodSimilar
PermeabilityReduced 2 – 5 times
Sulphate AttackReduced
Chloride PenetrationReduced