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Civil Engineering - Concrete Technology

Exercise : Concrete Technology - Section 4
26.
Cement used for normal concrete construction, is obtained by burning a mixture of
silicious and argillaceous materials
argilaceous and calcareous materials
silicious and catcareous materials
silicious, argillaceous and calcareous materials
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Pick up the correct statement from the following:
The concrete gains strength due to hydration of cement
The concrete cured at a temperature below 23°C, gains strength up to 28 days
The concrete does not set at freezing point
The strength of concrete increases with its age
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Pick up the incorrect statement from the following:
Admixtures accelerate hydration
Admixtures make concrete water proof
Admixtures make concrete acid proof
Admixtures give high strength
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Higher workability of concrete is required if the structure is
made with cement concrete
thick and reinfored
thin and heavily reinforced
thick and heavily reinfored.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Setting time of cement increases by adding
gypsum
hydrogen peroxide
calcium chloride
sodium oxide
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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