10 %
12.5 %
15 %
18.5 %
B. 12.5 %
0.15
0.12
0.30
1.00
Desired strength and workability
Desired durability
Water tightness of the structure
All the above
1100° and 1200°C
1200° and 1300°C
1300° and 1400°C
1400° and 1500°C
Both ends hinged
Both ends fixed
One end fixed and other end hinged
One end fixed and other end free
Tensile strength test
Slump test
Compaction factor test
Flexural strength test
Setting time
Tensile strength
Consistency
All the above
Insufficient quantity of water makes the concrete mix harsh
Insufficient quantity of water makes the concrete unworkable
Excess quantity of water makes the concrete segregated
All the above
Lime stone and clay
Gypsum and lime
Pozzolana
Lime, pozzolana and clay
One cantilever
Two cantilevers
Three cantilevers
Four cantilevers
Shales
Fly ash
Pumicite
All the above
100 kg/cm2
150 kg/cm2
200 kg/cm2
250 kg/cm2
Sedimentary rocks
Metamorphic rocks
Igneous rocks
Volcanic source
Segregation is necessary for a workable concrete
Consistency does not affect the workability of concrete
If the concrete mix is dry, the slump is maximum
None of these
Clay
Sand
Gravel
None of these
Hydrates rapidly
Generates less heat of hydration
Hardens rapidly
Provides less ultimate strength to cement
Is always less than 1
Is always greater than 1
Can be more than 1
Can be less than 1
Rounded spherical
Irregular
Flaky
None of these
0.1P + 0.3Y + 0.1Z = W/C × P
0.3P + 0.1Y + 0.01Z = W/C × P
0.4P + 0.2Y + 0.01Z = W/C × P
0.5P + 0.3Y + 0.01Z = W/C × P
Weight 50 kg
Height 18 cm
Plan area 3000 sq. cm
All the above
Floating
Screeding
Trowelling
Finishing
(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
Bending moment and shear
Bending moment and torsion
Shear and torsion
Bending moment, shear and torsion
Tricalcium silicate and dicalcium silicate
Dicalcium silicate and tricalcium aluminate
Tricalcium aluminate and tricalcium alumino ferrite
All the above
Rounded aggregate
Irregular aggregate
Angular aggregate
Flaky aggregate
Clay
Sand
Lime
Concrete
To provide adequate bond stress
To resist tensile stresses
To impart initial compressive stress in concrete
All of the above
Expands
Mix
Shrinks
None of these
2000 bags
2200 bags
2400 bags
2700 bags
Internal moisture conditions on hydration continue till complete strength is gained
Concrete specimens may be tested at any temperature
Concrete specimens need be of same age
Concrete specimens need be of same size
30 minutes
40 minutes
60 minutes
90 minutes