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Concrete Technology and Design of Concrete Structures

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

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

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

50 mm
100 mm
40 mm
105 mm

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Concrete Technology and Design of Concrete Structures
The minimum cover in a slab should neither be less than the diameter of bar nor less than

20 mm
30 mm
10 mm
15 mm

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Concrete Technology and Design of Concrete Structures
The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by

fc5>fcr>fC
fcr>fcs>fc.
fcr
tcr – rcs = tct

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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

28 liters
30 liters
34 liters
32 liters

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

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

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