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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The effect of creep on modular ratio is

to decrease it
to increase it
either to decrease or to increase it
to keep it unchanged

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Concrete Technology and Design of Concrete Structures
The fineness modulus of fine aggregate is in the range of

2.0 to 3.5
6.0 to 8.5
5.0 to 7.0
3.5 to 5.0

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Concrete Technology and Design of Concrete Structures
For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine’s theory

can be more than 1
can be less than 1
is always greater than 1
is always less than 1

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Concrete Technology and Design of Concrete Structures
According to IS: 456-1978, the column or the strut is the member whose effective length is greater than

4 times the least lateral dimension
3 times the least lateral dimension
The least lateral dimension
2 times the least lateral dimension

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Concrete Technology and Design of Concrete Structures
The effect of adding calcium chloride in concrete isi) to increase shrinkageii) to decrease shrinkageiii) to increase setting timeiv) to decrease setting timeThe correct answer is

(i) and (iii)
(ii) and (iv)
(ii) and (iii)
(i)and(iv)

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Concrete Technology and Design of Concrete Structures
Select the incorrect statement for ...

Bleeding can be minimized by adding pozzuolana finer aggregate.
Bleeding can be increased by addition of calcium chloride.
None of these
Lean mixes bleed more as compared to rich ones.

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