About Building Materials(1)

Aggregates(inert or filler material in cement concrete) including
(1) Coarse Aggregate,
(2) Fine Aggregate.

(1) Coarse Aggregate

Coarse Aggregate

  -Size less than 4.75 mm
  -Crushed stones and natural gravel are common materials used as coarse aggregate.
  -Various types of Granites,Gneisses,Schists,Crystalline hard limestone
(2)Fine Aggregate(such sand)
  -Size more than 4.75 mm
 

Fine Aggregate
Coarse Aggregate Mill