For general knowledge and engineering students.

1. DifferentShapeOf Cement
BULLNOSEBRICK
A brick moulded with a round angle is termed as a bullnose brick. It is used
for rounded quoin. A connection which is formed when a wall takes a turn is
known as a quoin.
ChannelBricks
These bricks are moulded to the shape of a gutter or a channel and they are
very often glazed. The channel bricks are used for drainage purpose.
Coping Bricks
These types of bricks are made to suit the thickness of wall on which coping is
to be provided. These are used as top most course to give a nice appearance
and easy drainage of water. The chamfered, half- round and saddle back are
some coping bricks.
COWNOSE BRICK
A brick moulded with double bullnose on end is known as a cownose brick. It
is also called double bullnose bricks.
PURPOSEMADE BRICK

2. These are bricks of special shape and size made to suit a particular
requirement. These bricks are usually more costly than the ordinary bricks.
But they ensure quicker and cleaner construction as no cutting to shape is
involved.
PAVING BRICK
These types of bricks are prepared from a clay containing a higher amount of
iron. The excess of iron vitrifies the bricks at a low temperature. These bricks
mechanically shaped and not hand moulded. Such bricks resist better
abrasive action of traffic. These bricks may be plane or chequered. Paving
bricks extensively used for garden walks, street pavements, stable floors etc.
PERFORATEDBRICK
These bricks contain cylindrical holes throughout their thickness. It is done by
pushing iron bars through the brick at the time of moulding. These bricks are
light in weight and require less quantity of clay for their preparation. These
bricks should be free from cracks, flaws and nodules of free lime. Their face
should be plane, uniform, rectangular, uniform colour and texture. The water
absorption should not exceed 15% by weight after immersion for 24 hours in
water. The perforation may be circular, square, rectangular of any other
shape.
HOLLOW BRICK
These bricks are also known as cellular or cavity bricks. They have well
defined set of cavities with specified dimensions made in the body of bricks.
They are light in weight about one-third the weight of the solid bricks of the
same size. These can be laid almost about four times as fast as the ordinary
bricks. They reduce the transmission of heat, sound and damp.