Dirk European Holdings LTD

Dirk European Holdings LTD

Dirk Pozzocrete


Pozzocrete 63 and 83 is an artificial pozzolan, specially designed to achieve optimum performance on most cement and concrete applications. In the production of Pozzocrete 63 and 83 high quality PFA were selected and industrially processed in order to obtain maximum performance as a cement replacement product. The process used to produce Pozzocrete 63 and 83 significantly reduces the amount of unburned particles leading to a virtually carbon free material. Optimum reactivity is obtained by rejecting the less reactive crystalline particles and by increasing the specific surface of the final product.

Pozzocrete 63 and 83 is available both in 50kg bags and in 1 metric tonne big bags. For special requests bulk deliveries are also available. The design of Pozzocrete 63 and 83 has taken into account the severe weather conditions in the areas where it may be supplied, in order to allow high cement replacement volumes allowing adequate strength development and good durability whilst avoiding short-term damage such as bleeding and thermo-hygrometric plastic shrinkage.

The use of this advanced pozzolanic material provides an effective reduction of the mixing water required and superior strength development, allowing high replacement rates that are not possible with normal cement additions.
The cement replacement rate depends on cement and admixture type and on type of use. For normal concrete production using OPC, replacement rates in the range of 35% are recommended. For each single application the proper mix design shall be determined by appropriate testing.
The proper use of Pozzocrete 63™ and 83™ results in long term technical improvements of the final product and at the same time ensures major cost savings to the user.
Summing up the benefits of Pozzocrete 63™ can be summarised as follows:-
  • Improved flow
  • Reduced water/cement ratio-less shrinkage, less cracks
  • Mix up to 50/50
  • Savings of up to 25%
  • Improved setting times under hot conditions
  • Strengthens with age

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