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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

Above 0.92
0.75 - 0.80
0.75 - 0.80
0.85 - 0.92

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Concrete Technology and Design of Concrete Structures
In T-shaped R C. retaining walls, the main reinforcement in the stem is provided on

the front face in one direction
the front face in both directions
the inner face in one direction
the inner face in both directions

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Concrete Technology and Design of Concrete Structures
Increase in the moisture content in concrete

reduces the strength
does not change the strength
All of these
increases the strength

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Concrete Technology and Design of Concrete Structures
Ratio of permissible stress in direct compression and bending compression is

between 1.5 and 2.0
greater than 2
between 1 and 1.5
less than 1

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Concrete Technology and Design of Concrete Structures
For a continuous slab of 3 m x 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is

75 mm
100 mm
50 mm
120 mm

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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

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

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