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Concrete Technology and Design of Concrete Structures

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

bulking
creep
segregation
bleeding

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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

120 mm
75 mm
100 mm
50 mm

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Concrete Technology and Design of Concrete Structures
The depth of footing for an isolated column is governed by
i) maximum bending moment
ii) shear force
iii) punching shear
The correct answer is

(i) and (iii)
only (i)
(i) and (ii)
(i), (ii) and (iii)

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Concrete Technology and Design of Concrete Structures
A higher modular ratio shows

higher tensile strength of steel
lower tensile strength of steel
lower compressive strength of concrete
higher compressive strength of con-crete

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Concrete Technology and Design of Concrete Structures
Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than

42 MPa and 35 MPa
53 MPa and 42 MPa
35 MPa and 42 MPa
42 MPa and 53 MPa

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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

30 liters
28 liters
32 liters
34 liters

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