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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is

32 liters
28 liters
30 liters
34 liters

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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
between 1 and 1.5
greater than 2
less than 1

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Concrete Technology and Design of Concrete Structures
To determine the modulus of rupture, the size of test specimen used is

100 x100 x700 mm
150 x150 x700 mm
150 x150 x500 mm
100 x100 x500 mm

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Concrete Technology and Design of Concrete Structures
Sinking of an intermediate support of a continuous beam
i) reduces the negative moment at support
ii) increases the negative moment at support
iii) reduces the positive moment at center of span
iv) increases the positive moment at center of span
The correct answer is

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

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Concrete Technology and Design of Concrete Structures
Workability of concrete is directly proportional to

Grading of the aggregate
All of above
Time of transit
Aggregate cement ratio

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Concrete Technology and Design of Concrete Structures
In a counterfort retaining wall, the main reinforcement is provided on the i) bottom face in front counterfort ii) inclined face in front counterfort iii) bottom face in back counterfort iv) inclined face in back counterEort The correct answer is

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

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