Aggregate, also called aggregate, is a piece of rock less than 125 mm in size (sand, gravel, and gravel) intended for construction of public works, civil engineering, and construction works. It consists of a set of mineral grains. Depending on their size, they fall into one of 7 families (sand, sand, ballast, etc.). Their nature, shape and characteristics are different depending on the deposits and production techniques.
Aggregates intended for use in the composition or in the construction of:
rail
road network
in the embankment
under the pavement
In the waterproofing of works of art
Sand, gravel and filler materials mixed with bitumen
Hydraulic concrete products