
Passing the 600 µm sieve

Filler & Fines
Stone powder and air-separated fines for asphalt, fillers and industrial uses.
Filler is very fine mineral matter that fills the voids between particles; in asphalt mixes it increases the stiffness of the bituminous mortar and the density of the mix.
Fineness, dryness and uniformity are the main properties of this group, and the chemical purity needed depends on the end use.
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