Filler or Aggregate

Propump mix designs will only incorporate fine aggregates with a maximum particle size of 5mm (with the exception of light weight aggregates). The aggregate grading should be even with greater than 50% passing a 600µm sieve. Larger aggregate will precipitate causing a poor quality of set material.

Fillers that have been used in Propump mix designs include;

  • Marine sand
  • Land dug sand
  • Chalk
  • Crushed concrete
  • Crumbed Rubber
  • Granite dust
  • Limestone fines
  • Lytag fines
  • Expanded polystyrene
  • Coarse Pulverised Fuel Ash (PFA)