P = [(Z - X)/(Z - Y)] × 100
P = [(X - Z)/(Z - Y)] × 100
P = [(X - Z)/(Z + Y)] × 100
P = [(Z + X)/(Z - Y)] × 100
B. P = [(X - Z)/(Z - Y)] × 100
M 100
M 150
M 250
M 400
Granite
Magnetite
Barite
Volcanic scoria
Sand obtained from pits, is washed to remove clay and silt
Sand obtained from flooded pits, need not be washed before use
The chloride in sea shore sand and shingle may cause corrosion of reinforcement if the concrete is porous
All the above
2.75 mm
3.00 mm
3.75 mm
4.75 mm
(i) and (ii),
(ii) and (iii)
(i) and (iv)
(iii) and (iv)
Aggregate cement ratio
Time of transit
Grading of the aggregate
All of above
0.43 d
0.537 d
0.68 d
0.85 d Where d is effective depth of beam
Zone I
Zone II
Zone III
Zone IV
At the middle of the wall
At the edge of the wall
Halfway between the middle and edge of the wall
At a distance equal to effective depth of footing from the edge of the wall
4.75 mm
30 mm
60 mm
75 mm
20 %
25 %
30 %
35 %
Dead load only
Dead load + live load
Dead load + fraction of live load
Live load + fraction of dead load
Bending moment is small
Shear force is small
The member is supported by other member
All the above
Building concrete is less than 45
Road pavement concrete is less than 30
Runway concrete is less than 30
All the above
20 mm particles
10 mm particles
4.75 mm particles
All the above
Water cement paste hardens due to hydration
During hardening cement binds the aggregates together
Cement provides strength, durability and water tightness to the concrete
All the above
A highly absorptive aggregate reduces the workability of concrete considerably
The specific gravity of aggregate is important for the determination of the moisture content
The absorption and porosity of an aggregate influence the property of the concrete
All the above
(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
Tensile strength test
Slump test
Compaction factor test
Flexural strength test
3 days
7 days
21 days
28 days
Rounded
Elongated
Angular
All of the above
Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Shape
Grading
Compaction
All the above
Rounded aggregate
Irregular aggregate
Angular aggregate
Flaky aggregate
Is proportional to water content is the mix
Is proportional to cement concrete
Increases with age of concrete
All the above
According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight
According to the shape of the particles, concrete aggregates are classified as rounded irregular, angular and flaky
According to the surface texture of the particles, the concrete aggregates are classified as glassy, smooth, granular, rough, crystalline, honey combed and porous
All the above
Low-heat Portland cement
Rapid hardening Portland cement
Portland blast slag cement
Portland pozzolana cement
8 kg
10 kg
12 kg
14 kg
More than or equal to one fourth of diameter of main bar
More than or equal to 5 mm
More than 5 mm but less than one-fourth of diameter of main bar
More than 5 mm and also more than one-fourth of diameter of main bar
Soundness of cement
Hardness of cement
Strength of cement
Durability of cement