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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The strength of concrete after one year as compared to 28 days strength is about

25 to 50% more
10 to 15% more
20 to 25% more
15 to 20% more

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Concrete Technology and Design of Concrete Structures
The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

segregation
bleeding
bulking
creep

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

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

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Concrete Technology and Design of Concrete Structures
The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel)

0.87 fy
0.37 fy
0.67 fy
0.57 fy

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Concrete Technology and Design of Concrete Structures
The limits of percentage p of the longitudinal reinforce-ment in a column is given by

0.15% to 2%
0.8% to 6%
0.8% to 8%
0.8% to 4%

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

34 liters
28 liters
32 liters
30 liters

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