Latest Highway Engineering Objective Questions Part – 2
1.If the group index value of subgrade is between 5 and 9, then the subgrade is treated as
good
fair
poor
very poor
ANSWER : : poor
2.The method of design of flexible pavement as recommended by IRC is
group index method
CBR method
Westergaard method
Benkelman beam method
ANSWER : : CBR method
3.Which of the following represents hardest grade of bitumen ?
30/40
60/70
80/100
100/120
ANSWER : : 30/40
4.Softening point of bitumen to be used for read construction at a place where maximum temperature is 40� C should be
less-than 40�C
greater than 40�C
equal to 40�C
none of the above
ANSWER : s: b
5.Select the correct statement.
More the value of group index, less thickness of pavement will be required.
More the value of CBR, greater thickness of pavement will be required.
Minimum and maximum values of group index can be 0 and 20 respectively.
all of the above
ANSWER : : Minimum and maximum values of group index can be 0 and 20 respectively.
6.Rigidity factor for a tyre pressure greater than 7 kg/cm2 is
equal to 1
less than 1
greater than 1
zero
ANSWER : : less than 1
7.Group index method of design of flexible pavement is
a theoretical method
an empirical method based on physical properties of subgrade soil
an empirical method based on strength characteristics of subgrade soil
a semi empirical method
ANSWER : : an empirical method based on physical properties of subgrade soil
8.RC-2, MC-2 and SC-2 correspond to
same viscosity
viscosity in increasing order from RC-2 to SC-2
viscosity in decreasing order from RC-2 to SC-2
none of the above
ANSWER : : same viscosity
9.Percentage of free carbon in bitumen is
more than that in tar
less than that in tar
equal to that in tar
none of the above
ANSWER : : less than that in tar
10.The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life of pavement is
1000
10000
100000
1000000
ANSWER : : 1000000
11.The maximum allowable Los Angeles abrasion value for high quality surface course is
10%
20 %
30%
45 %
ANSWER : : 30%
12.Penetration test on bitumen is used for determining its
grade
viscosity
ductility
temperature susceptibility
ANSWER : : grade
13.Tyre pressure influences the
total depth of pavement
quality of surface course
both the above
none of the above
ANSWER : : quality of surface course
14.Bottom most layer of pavement is known as
wearing course
base course
sub-base course
subgrade
ANSWER : : subgrade
15.The group index for a soil, whose liquid limit is 40 percent, plasticity index is 10 percent and percentage passing 75 micron IS sieve is 35, is
0
3
5
7
ANSWER : : 0
16.The recommended grade of tar for grouting purpose is
RT-1
RT-2
RT.3
RT-5
ANSWER : : RT-5
17.Los Angeles testing machine is used to conduct
abrasion test
impact test
attrition test
crushing strength test
ANSWER : : abrasion test
18.For rapid curing cutbacks, the oil used is
gasoline
kerosene oil
light diesel
heavy diesel
ANSWER : : gasoline
19.In CBR test the value of CBR is calculated at
2.5 mm penetration only
5.0 mm penetration only
7.5 mm penetration only
both 2.5mm and 5.0 mm penetrations
ANSWER : : both 2.5mm and 5.0 mm penetrations
20.If aggregate impact value is 20 to 30 percent, then it is classified as
exceptionally strong
strong
satisfactory for road surfacing
unsuitable for road surfacing
ANSWER : : satisfactory for road surfacing
21.The critical combination of stresses for corner region in cement concrete roads is
load stress + warping stress frictional stress
load stress + warping stress + frictional stress
load stress + warping stress
load stress + frictional stress
ANSWER : : load stress + warping stress
22.The maximum limit of water absorption for aggregate suitable for road construction is
0.4 %
0.6%
0.8 %
1.0 %
ANSWER : : 0.6%
23.The ductility value of bitumen for suitability in road construction should not be less than
30 cm
40 cm
50 cm
60 cm
ANSWER : s: c
24.Which of the following tests measures the toughness of road aggregates ?
crushing strength test
abrasion test
impact test
shape test
ANSWER : : impact test
25.Flexible pavement distribute the wheel load
directly to subgrade
through structural action
through a set of layers to the subgrade
none of the above
ANSWER : : through a set of layers to the subgrade
26.Bitumen of grade 80/100 means
its penetration value is 8 mm
its penetration value is 10 mm
its penetration value is 8 to 10 mm
its penetration value is 8 to 10 cm
ANSWER : : its penetration value is 8 to 10 mm
27.Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?
mastic asphalt
sheet asphalt
bituminous carpet
bituminous concrete
ANSWER : : sheet asphalt
28.In highway construction, rolling starts from
sides and proceed to centre
centre and proceed to sides
one side and proceed to other side
any of the above
ANSWER : : sides and proceed to centre
29.The suitable surfacing material for a bridge deck slab is
sheet asphalt
bituminous carpet
mastic asphalt
rolled asphalt
ANSWER : : mastic asphalt
30.The fundamental factor in the selection of pavement type is
climatic condition
type and intensity of traffic
subgrade soil and drainage conditions
availability of funds for the construction project
ANSWER : : type and intensity of traffic
31.The maximum spacing of contraction joints in rigid pavements is
2.5 m
3.5 m
4.5 m
5.5m
ANSWER : : 4.5 m
32.The minimum design speed for hairpin bends in hill roads is taken as
20 kmph
30 kmph
40 kmph
50 kmph
ANSWER : : 20 kmph
33.In highway construction on super elevated curves, the rolling shall proceed from
sides towards the centre
centre towards the sides
lower edge towards the upper edge
upper edge towards the lower edge
ANSWER : : lower edge towards the upper edge
34.The function of an expansion joint in rigid pavements is to
relieve warping stresses
relieve shrinkage stresses
resist stresses due to expansion
allow free expansion
ANSWER : : allow free expansion
35.In the penetration macadam construction, the bitumen is
sprayed after the aggregates are spread and compacted
premixed with aggregates and then spread
sprayed before the aggregates are spread and compacted
none of the above
ANSWER : : sprayed after the aggregates are spread and compacted
36.Maximum daily traffic capacity of bituminous pavements is
500 tonnes per day
1000 tonnes per day
1500 tonnes per day
2000 tonnes per day
ANSWER : : 1500 tonnes per day
37.The aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is
8 cubic meter
10 cubic meter
12 cubic meter
15 cubic meter
ANSWER : : 12 cubic meter
38.The maximum thickness of expansion joint in rigid pavements is
0
25 mm
50 mm
100 mm
ANSWER : : 25 mm
39.Which of the following is considered to be the highest quality construction in the group of black top pavements ?
mastic asphalt
sheet asphalt
bituminous carpet
bituminous concrete
ANSWER : : bituminous concrete
40.For the construction of water bound macadam roads, the correct sequence of operations after spreading coarse aggregates is
dry rolling, wet rolling, application of screening and application of filler
dry rolling, application of filler, wet rolling and application of screening
dry rolling, application of screening, wet rolling and application of filler
dry rolling, application of screening, application of filler and wet rolling
ANSWER : : dry rolling, application of screening, wet rolling and application of filler
41.The drain which is provided parallel to roadway to intercept and divert the water from hill slopes is known as
sloping drain
catchwater drain
side drain
cross drain
ANSWER : : catchwater drain
42.Which of the following premix methods is used for base course ?
bituminous carpet
mastic asphalt
sheet asphalt
bituminous bound macadam
ANSWER : s: d
43.The camber of shoulders in water bound macadam roads is
equal to the cross slope of pavement
less than the cross slope of pavement
greater than the cross slope of pavement
zero
ANSWER : : equal to the cross slope of pavement
44.The thickness of bituminous carpet varies from
20 to 25 mm
50 to 75 mm
75 to 100 mm
100 to 120 mm
ANSWER : : 20 to 25 mm
45.The binder normally used in flexible pavement construction is
cement
lime
bitumen
none of the above
ANSWER : : bitumen
46.Most suitable material for highway embankments is
granular soil
organic soil
silts
clays
ANSWER : : granular soil
47.When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment to be given is
seal coat
tack coat
prime coat
spray of emulsion
ANSWER : : tack coat
48.The camber for hill roads in case of bituminous surfacing is adopted as
2%
2.5%
3%
4%
ANSWER : : 2.5%
49.The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as
retaining wall
breast wall
parapet wall
none of the above
ANSWER : : breast wall
50.Select the correct statement.
Quantity of binder required for tack coat is less than that required for prime coat.
Prime coat treatment is given for plugging the voids in water bound macadam during bituminous road construction.
Seal coat is the final coat over certain previous bituminous pavements.
A bitumen primer is a high viscosity cutback.
ANSWER : : A bitumen primer is a high viscosity cutback.
51.The most suitable equipment for compacting clayey soils is a
smooth wheeled roller
pneumatic tyred roller
sheep foot roller
vibrator
ANSWER : : sheep foot roller
52.Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?
mastic asphalt
sheet asphalt
bituminous carpet
bituminous concrete
ANSWER : : sheet asphalt
53.The suitable surfacing material for a bridge deck slab is
sheet asphalt
bituminous carpet
mastic asphalt
rolled asphalt
ANSWER : : mastic asphalt
54.The fundamental factor in the selection of pavement type is
climatic condition
type and intensity of traffic
subgrade soil and drainage conditions
availability of funds for the construction project
ANSWER : : type and intensity of traffic
55.The maximum spacing of contraction joints in rigid pavements is
2.5 m
3.5 m
4.5 m
5.5m
ANSWER : : 4.5 m