Civil Engineering - Concrete Technology
Exercise :: Concrete Technology - Section 3
| 41. |
For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is |
| A. |
1 : 3 : 6 | | B. |
1 :  : 3 | | C. |
1 : 2 : 4 | | D. |
1 : 1 : 2 | | E. |
1 : 4 : 8. |
Answer: Option C
Explanation:
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| 42. |
The type of aggregates of same nominal size, which contain less voids when compacted, are |
| A. |
rounded spherical | | B. |
irregular | | C. |
flaky | | D. |
none of these. |
Answer: Option A
Explanation:
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| 43. |
For the construction of cement con-certe dams, the maximum permissible size of the aggregates, is |
Answer: Option A
Explanation:
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| 44. |
Permissible compressive strength of M 200 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 C
Explanation:
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| 45. |
For preparing a test-specimen, it is necessary |
| A. |
to mix cement and fine aggregate by dry hand | | B. |
to mix coarse aggregates | | C. |
to mix water to the cement, fine aggregates and coarse aggregates | | D. |
to oil inner surface of the mould and the base plate, before placing concrete | | E. |
all the above. |
Answer: Option E
Explanation:
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