WHAT IS BRICK?
BRICK: Bricks is define as one kind of artificial stone made of clay.
CLASSIFICATION OF BRICK
1. Sun dried bricks
2. Burnt bricks
- 1st Class brick
- 2nd Class brick
- 3rd Class brick
- Over burnt brick
1st Class brick
Ø A first class bricks is well burnt and regular in shape.
Ø Edges are shape and well defined.
Ø Its surface is smooth, clean and free forms cracks.
Ø It has specific gravity of 1.8
Use of 1st class bricks
Ø Masonry wall
Ø Flooring and walling purpose
Ø Shape bricked are used in carving, arches and coping
Ø Use for reinforced concrete structure
2nd Class brick
Ø Well burnt but irregular shape and size.
Ø It has a rough surface.
Ø It does not have a uniform colour.
Ø It has fire compact and uniform texture.
Use of 2nd class bricks
Ø Use for unimportant situation, important structure and internal walls.
3rd Class brick
Ø It has a light yellowish color.
Ø It is not well burnt.
Ø It is soft.
Ø Its edges are irregular and quite rough.
Use for 3rd class bricks
Ø Use inferior and temporary building.
Over burnt brick
Ø They are over burnt.
Ø They are irregular in shape and variable in the form of lumps
Use of over burnt bricks
Ø Uses as aggregate for making concrete used in road work.
