Civil Engineering - Concrete Technology

1. 

Permissible compressive strength of M 150 concrete grade is

A. 100 kg/cm2
B. 150 kg/cm2
C. 200 kg/cm2
D. 250 kg/cm2
E. 300 kg/cm2

Answer: Option B

Explanation:

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2. 

Slump test of concrete is a measure ofits

A. consistency
B. compressive strength
C. tensile strength
D. impact value.

Answer: Option A

Explanation:

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3. 

Pozzolana cement is used with confidence for construction of

A. dams
B. massive foundations
C. abutments
D. R.C.C. structures
E. all the above.

Answer: Option E

Explanation:

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4. 

Water cement ratio is

A. volume of water to that of cement
B. weight of water to that of cement
C. weight of concrete to that of water
D. volume of concrete to that of water
E. both (a) and (b) of the above.

Answer: Option E

Explanation:

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5. 

Efflorescence in cement is caused due to an excess of

A. alumina
B. iron oxide
C. silica
D. alkalis
E. magnesium oxide.

Answer: Option D

Explanation:

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