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 |
• Marble : Ornamental work, flooring, etc.
Marble can take a good polish and has an attractive appearance; hence, it is widely used for ornamental
works and flooring.
• Slate : Damp-proofing, flooring, roofing, etc.
Slate has low water absorption and can be split into thin sheets, making it suitable for roofing, flooring
and damp-proofing.
• Limestone : Raw material for cement
Limestone is the principal calcareous raw material used in cement manufacture.
• Compact sandstone : Fire-resistant masonry
Compact sandstone has comparatively good fire resistance and is used for fire-resistant masonry.Preparing students for success in a changing World.
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