Filler or aggregate
Fillers & 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
- Incinerator bottom ash
- Coarse Pulverised Fuel Ash (PFA)
