Civil Engineering :: Building Materials
- First class timber has an average life of
- In the method of condensation polymerization,
- Which one of the following polymers is obtained from condensation polymerization?
- The rocks in which argil (or clay) predominates, are called
- The trunk of tree left after cutting all the branches is known as
- A badly mixed cement concrete results in
- Minimum thickness of wall where single Flemish bond can be used is
- The commonly used base for iron and steel work, is
- When a brick is immersed in water for 24 hours and then dried, if
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A.
No grey or white deposits appear on the surface, the brick is free from soluble salts |
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B.
10 percent surface is covered with grey or white deposits, the brick has slight efflorescence |
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C.
50 percent surface is covered with grey or white deposits, the brick has serious efflorescence |
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D.
All the above |