Civil Engineering - Building Materials

16. 

Good quality cement contains higher percentage of

A. Tricalcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite
E. all the above.

Answer: Option A

Explanation:

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17. 

Soundness of cement is tested by

A. Vicat's apparatus
B. Le-chatelier apparatus
C. compressive strength testing apparatus
D. none of the these.

Answer: Option B

Explanation:

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18. 

The PVC doors and windows are preferred as they are

A. rust proof
B. rot proof
C. termile proof
D. water proof
E. all of these.

Answer: Option E

Explanation:

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19. 

Based on its dry weight, a freshly felled tree may contain water

A. 25%
B. 50%
C. 75%
D. 100%.

Answer: Option D

Explanation:

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20. 

Forge pig may be converted to wrought iron by

A. rolling
B. pudding
C. shingling
D. refining.

Answer: Option B

Explanation:

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