Brick is as an important building material. Bricks can be
joint together using mortar which makes it adhesive and interlocking them. It
is used for residential structure, commercial structure, institutional
structure and industrial structure purpose.
Composition of Brick:-
Sl. No.
|
Composition of Brick
|
%Range
|
1
|
Silica
|
50%
to 60%
|
2
|
Alumina
|
20%-30%
|
3
|
Lime
|
<5%
|
4
|
Magnesia
|
<1%
|
5
|
Iron
Oxide
|
<7%
|
 |
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Role of Silica:-
(1.) It
imparts strength, durability and uniform shape of bricks.
(2.) It
prevent cracking, shrinkage of earth.
(3.) Excess
of silica is responsible of corrosion and due to which brick will make brittle.
Role of Alumina:-
(1.) Absorb
water and imparts plasticity to the earth such that it can be moulded.
(2.) If
alumina is excess in brick, the crack will develop on drying and becomes hard when burnt.
 |
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Recent Post:Description of lime
Role of Lime:-
(1.) Prevents
the shrinkage on drying
(2.) Excess
of lime causes the brick to unsound and brick standard shape will change.
Role of Magnesia:-
(1.) It
imparts yellow colour of brick.
(2.) Decrease
the shrinkage
(3.) Excess
of magnesia leads to decay the bricks.
Role of Iron Oxide:-
(1.) It
gives red colour.
(2.) It
gives strength & hardness.
(3.) Excess
of iron oxide makes the brick colour is dark blue.
 |
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|
Classification of Bricks:-
Sl. No.
|
Class of Brick
|
Min. Crushing Strength
|
Max. Water Absorption
|
1
|
First
Class
|
>10
N/MM2
|
12 %
to 20%
|
2
|
Second
Class
|
>7
N/MM2
|
22 %
|
3
|
Third
Class
|
<7
N/MM2
|
25 %
|
4
|
Fourth
Class/Jhamma
|
-
|
-
|
 |
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Harmful Ingredient in Brick Earth:-
(1.)
Iron Pyrites
(2.)
Pebles
& Gravels
(3.)
Alkalies
(4.)
Organic
Matter
(5.)
Sulpher
Tests of Brick:-
(1.)
Crushing
Test/Compressive Strength Test
(2.)
Hardness
Test
(3.) Toughness Test
(4.) Water Absorption Test
(5.) Alkali Test/Efflorescence Test
(6.) Soundness Test
(7.) Shape & Size Test
 |
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|
Note:-
(1.) No.
of bricks in 1 cum. is 500.
(2.) Weight
of one brick is lies between 3 to 3.5 kg.
(3.) Weight
of 1 cum. brick is 1800 kg.
 |
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Manufacturing Procedure of
Brick:-
(1.) Preparation
of Clay
(2.) Moulding
(3.) Drying
(4.) Burning
Procedure of
Preparation of Clay:-
(1.) Unsoiling
(2.) Digging
(3.) Cleaning
(4.) Weathering
(5.) Blending
(6.) Tampering
Types of Moulding:-
(1.) Hand
Moulding---------(a.) Ground Moulding
(b.) Table Moulding
(2.)Machine Moulding------(a.)Plastic Clay Machine Moulding
(b.)Dry Clay Machine Moulding
 |
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Types of Burning:-
(1.) Clamp
Burning
(2.) Kiln
Burning
Types of Bond:-
(1.) Strecher
Bond
(2.) Header Bond
(3.) English
Bond
(4.) Flemish
Bond
 |
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|
Note:-
(1.) English
bond is stronger than Flemish bond.
(2.) Flemish
bond gives better appearance than English bond.
(3.) Construction
with Flemish bond requires greater skills as compare to English bond.
 |
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(4.) Standard
size of modular brick is 190 mm x 90 mm x 90 mm or 190 mm x 90 mm x 40 cm.
(5.) Standard
size of non-modular brick is 230 mm x 110 mm x 70 mm or 230 mm x 110 mm x 30 mm.
Prefer IS Code:-
(1.) IS:1077
(2.) IS:3495
(3.) IS:2180
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Written By-
Ritesh Raj
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