Match the following lists of 'Defects of Bricks' and their 'Causes': Defects of Bricks Causes
|
List-I |
List- II |
||
|
A. |
Bloating |
1 |
presence of excess carbonaceous matter and sulphur in brick-clay |
|
B. |
Efflorescence |
2 |
presence of alkalies |
|
C. |
Chuffs |
3 |
imprisoned air during moulding |
|
D. |
Blisters |
4 |
falling of rain water on hot bricks |
• Bloating : Caused by the presence of excess carbonaceous matter and sulphur in brick clay, producing a
spongy/swollen mass.
• Efflorescence : Caused by the presence of soluble alkaline salts (alkalis) in bricks.
• Chuffs : Caused when rainwater falls on hot bricks, resulting in deformation of their shape.
• Blisters : Blisters can be caused by air imprisoned during moulding.
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