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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The effect of adding calcium chloride in concrete is i) to increase shrinkage ii) to decrease shrinkage iii) to increase setting time iv) to decrease setting time The 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
In order to obtain the best workability of concrete, the preferred shape of aggregate is

rounded
elongated
All of these
angular

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Concrete Technology and Design of Concrete Structures
If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called

None of these
under-reinforced beam
over-reinforced beam
balanced beam

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Concrete Technology and Design of Concrete Structures
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than

40 mm
60 mm
45mm
50 mm

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Concrete Technology and Design of Concrete Structures
Minimum thickness of load bearing RCC wall should be

50 mm
40 mm
105 mm
100 mm

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Concrete Technology and Design of Concrete Structures
Ultimate strength of cold drawn high steel wires

decreases with increase in diameter of bar
increases with increase in diameter of bar
does not depend on diameter of bar
None of these

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