1
Bitumen of grade 80/100 means
A)
its penetration value is 8 mm
B)
its penetration value is 10 mm
C)
its penetration value is 8 to 10 mm
D)
its penetration value is 8 to 10 cm
Answer & Solution
Answer: Option
C
2
Select the correct statement.
A)
Quantity of binder required for tack coat is less than that required for prime coat.
B)
Prime coat treatment is given for plugging the voids in water bound macadam during bituminous road construction.
C)
Seal coat is the final coat over certain previous bituminous pavements.
D)
A bitumen primer is a high viscosity cutback.
Answer & Solution
Answer: Option
D
3
Which of the following represents hardest grade of bitumen?
A)
$$\frac{{30}}{{40}}$$
B)
$$\frac{{60}}{{70}}$$
C)
$$\frac{{80}}{{100}}$$
D)
$$\frac{{100}}{{120}}$$
Answer & Solution
Answer: Option
A
4
Tyre pressure influences the
A)
total depth of pavement
B)
quality of surface course
C)
both the above
D)
none of the above
Answer & Solution
Answer: Option
B
5
When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment given is
A)
Seal coat
B)
Tack coat
C)
Prime coat
D)
Spray of emulsion
Answer & Solution
Answer: Option
B
6
The value of ruling gradient in plains as per IRC recommendation is
A)
1 in 12
B)
1 m 15
C)
1 in 20
D)
1 in 30
Answer & Solution
Answer: Option
D
7
Which of the following tests measures the toughness of road aggregates ?
A)
crushing strength test
B)
abrasion test
C)
impact test
D)
shape test
Answer & Solution
Answer: Option
C
8
The minimum design speed for hairpin bends in hill roads is taken as
A)
20 kmph
B)
30 kmph
C)
40 kmph
D)
50 kmph
Answer & Solution
Answer: Option
A
9
For the construction of water bound macadam roads, the correct sequence of operations after spreading coarse aggregates is
A)
dry rolling, wet rolling, application of screening and application of filler
B)
dry rolling, application of filler, wet rolling and application of screening
C)
dry rolling, application of screening, wet rolling and application of filler
D)
dry rolling, application of screening, application of filler and wet rolling
Answer & Solution
Answer: Option
C
10
Softening point of bitumen to be used for read construction at a place where maximum temperature is 40° C should be
A)
less-than 40°C
B)
greater than 40°C
C)
equal to 40°C
D)
none of the above
Answer & Solution
Answer: Option
B
