Less water
Fine aggregates
Rich mix
More water and coarse aggregates
Zone I
Zone II
Zone III
Zone IV
Increasing the depth
Providing shear reinforcement
Using high strength steel
Using thinner bars but more in number
M 100
M 150
M 250
M 400
(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
5 % less
10 % less
5 % more
10 % more
70 litres of sand and 120 litres of aggregates
70 kg of sand and 140 litres of aggregates
105 litres of sand and 140 litres of aggregates
105 litres of sand and 210 litres of aggregates
3
4
5
7
Reacts fast with water
Generates less heat of hydration
Causes initial setting and early strength of cement
Does not contribute to develop ultimate strength
Space between the exterior walls of a warehouse and bag piles should be 30 cm
Cement bags should preferably be piled on wooden planks
Width and height of the pile should not exceed 3 m and 2.70 m respectively
None of these
Water proof masonry walls
Water proof roof
Few windows which remain generally closed
All the above
Shear strength
Tensile strength
Compressive strength
None of these
5% by weight of aggregates plus 20% of weight of cement
10% by weight of aggregates plus 10% of weight of cement
5% by weight of aggregates plus 30% of weight of cement
30% by weight of aggregates plus 10% of weight of cement
1.5
2.0
2.5
3.0
Steel and concrete are same
Steel is lower than that for concrete
Steel is higher than that for concrete
None of the above
Water cement ratio is reduced
Proportion of aggregates is reduced
An allowance for the entrained air is made
All the above
(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
Equal to the mean size
Twice the mean size
Thrice the mean size
Four times the mean size
Only in post-tensioned beams
Only in pre-tensioned beams
In both post-tensioned and pre-tensioned beams
None of the above
Shape
Grading
Compaction
All the above
To mix cement and fine aggregate by dry hand
To mix coarse aggregates
To mix water to the cement, fine aggregates and coarse aggregates
All the above
Segregation
Internal friction
Hardness
Bleeding
The concrete gains strength due to hydration of cement
The concrete does not set at freezing point
The strength of concrete increases with its age
All the above
Thorough mixing of concrete is required
Proper compaction of concrete is required
Proper curing of concrete is required
All the above
Increases the strength of concrete
Decreases the strength of concrete
Has no effect on the strength of concrete
None of these
Segregation
Compaction
Shrinkage
Bulking
Less
More
Equal
None of the above
Moist aggregates
Very dry aggregates
Dry aggregates
Saturated surface dry aggregate
20.5 mm
30.5 mm
40.5 mm
50.5 mm
Dead load only
Dead load + live load
Dead load + fraction of live load
Live load + fraction of dead load