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

Civil Engineering's Objective

Civil Engineering concerns with building construction,which contains plumbing,drawing building designs,planning & drawing projects,calculating estimated building maintenance costs,etc.
If you think that civil engineering is easy to learn,you'll be a mistake.No subject is easy to learn.But,if you wanna know exactly about it you can do it yourself,and try hard on learning about this Essential Engineering Subject.
1st step is always difficult to walk.So,don't be afraid of it.Keep on learning & be a civil engineer and serve our Earth with the technology of civil engineering.