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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Approximate value of shrinkage strain in concrete, is

0.03
0.003
0.0003
3.0E-5

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Concrete Technology and Design of Concrete Structures
The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone

tensile stress
bond stress
shear stress
compressive stress

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

vater-cement ratio
the air in the mix
time of transit
size of aggregate

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Concrete Technology and Design of Concrete Structures
The minimum diameter of longitudinal bars in a column is

6 mm
12 mm
8 mm
16 mm

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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
42 MPa and 53 MPa
35 MPa and 42 MPa

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Concrete Technology and Design of Concrete Structures
Finer grinding of cement

both (a) and (b)
does not affect the strength
affects only the early development of strength
affects only the ultimate strength

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