Fineness test
Consistency test
Setting time test
Soundness test
B. Consistency test
Higher workability indicates unexpected increase in the moisture content
Higher workability indicates deficiency of sand
If the concrete mix is dry, the slump is zero
All the above
3.0 m and 1.5 m
1.5 m and 3.0 m
3.0 m and 3.0 m
1.5 m and 1.5 m
0.33
0.5
0.75
1.0
Zero
Tensile
Compressive
Tensile or compressive
M 100
M 150
M 250
M 400
Workability admixtures
Accelerators
Retarders
Air entraining agents
0
10
20
30
Reacts fast with water
Generates less heat of hydration
Causes initial setting and early strength of cement
Does not contribute to develop ultimate strength
100 mm
150 mm
200 mm
250 mm
Consistency
Compressive strength
Tensile strength
Impact value
Increasing the depth of beam
Using thinner bars but more in number
Using thicker bars but less in number
Providing vertical stirrups
5 %
10 %
15 %
20 %
Roads
Retaining walls
Lining of canals
All the above
Voids in coarse aggregates are filled by fine aggregates
Voids in fine aggregates are filled by the cement paste
Volume of fine aggregates is equal to total voids in coarse aggregates plus 10% extra
All the above
Fineness test
Consistency test
Setting time test
Soundness test
10 mm
15 mm
25 mm
13 mm
Bending moment is small
Shear force is small
The member is supported by other member
All the above
Flexural tensile strength
Direct tensile strength
Compressive strength
Split tensile strength
Increases with increase in diameter of bar
Decreases with increase in diameter of bar
Does not depend on diameter of bar
None of the above
One cantilever
Two cantilevers
Three cantilevers
Four cantilevers
0.35 d
0.40 d
0.45 d
Dependent on grade of concrete also
Economy
Durability
Workability
All the above
Lime stone and clay
Gypsum and lime
Pozzolana
Lime, pozzolana and clay
Fineness test
Consistency test
Test for setting time
Test for tensile strength
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
Less liable to segregation
More liable to segregation
More liable to bleeding
More liable for surface scaling in frosty weather
18
30
40
58
Compressive everywhere
Tensile everywhere
Partly compressive and partly tensile
Zero
0.75 - 0.80
0.80 - 0.85
0.85 - 0.92
Above 0.92
10 kg
12 kg
14 kg
16 kg