Related Questions

For heavily reinforced concrete member, the nominal maximum size of the aggregates should be restricted to
A 5 mm less than the minimum clear distance between the main bars
B 5 mm less than the minimum cover to the reinforcement
C Smaller of A and B
D Greater of A and B
The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called
A Segregation
B Bleeding
C Bulking
D Creep
In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively
A Compressive and tensile
B Tensile and compressive
C Both compressive
D Both tensile
The maximum shear stress (q) in concrete of a reinforced cement concrete beam is
A $$\frac{{{\text{Shear force}}}}{{{\text{Lever arm}} \times {\text{Width}}}}$$
B $$\frac{{{\text{Lever arm}}}}{{{\text{Shear force}} \times {\text{Width}}}}$$
C $$\frac{{{\text{Width}}}}{{{\text{Lever arm}} \times {\text{Shear force}}}}$$
D $$\frac{{{\text{Shear force}} \times {\text{Width}}}}{{{\text{Lever arm}}}}$$
Which of the following increases the workability of concrete?
A Decreasing size of aggregates
B Increasing flaky aggregates
C Increasing size of aggregates
D Increasing fine aggregates
Workability of concrete is inversely proportional to
A Time of transit
B Vater-cement ratio
C The air in the mix
D Size of aggregate
In order to obtain the best workability of concrete, the preferred shape of aggregate is
A Rounded
B Elongated
C Angular
D All of the above
Workability of concrete is directly proportional to
A Aggregate cement ratio
B Time of transit
C Grading of the aggregate
D All of above
For under water concreting.
A At least 10 percent more cement is required as compared to dry conditions
B The volume of coarse aggregates shall not be less than one and half times and not more than twice that of fine aggregate
C De-watering by pumping is not done or until 24 hours thereafter
D All the above
High pressure grouting is generally restored for concreting in the lining if the rock strata is:
A Highly fissured
B Poor
C Likely to get seepage of water
D All of the above

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