101. Select the correct statement.
a) More the value of group index, less thickness of pavement will be required.
b) More the value of CBR, greater thickness of pavement will be required.
c) Minimum and maximum values of group index can be 0 and 20 respectively.
d) all of the above
Ans: c
102. If the group index value of subgrade is between 5 and 9, then the subgrade is treated as
a) good
b) fair
c) poor
d) very poor
Ans: c
103. Tyre pressure influences the
a) total depth of pavement
b) quality of surface course
c) both the above
d) none of the above
Ans: b
104. Rigidity factor for a tyre pressure greater than 7 kg/cm2 is
a) equal to 1
b) less than 1
c) greater than 1
d) zero
Ans: b
105. The critical combination of stresses for corner region in cement concrete roads is
a) load stress + warping stress frictional stress
b) load stress + warping stress + frictional stress
c) load stress + warping stress
d) load stress + frictional stress
Ans: c
106. Tie bars in cement concrete pavements are at
a) expansion joints
b) contraction joints
c) warping joints
d) longitudinal joints
Ans: d
107. The maximum spacing of contraction joints in rigid pavements is
a) 2.5 m
b) 3.5 m
c) 4.5 m
d) 5.5m
Ans: c
108. The maximum thickness of expansion joint in rigid pavements is
a) 0
b) 25 mm
c) 50 mm
d) 100 mm
Ans: b
109. The function of an expansion joint in rigid pavements is to
a) relieve warping stresses
b) relieve shrinkage stresses
c) resist stresses due to expansion
d) allow free expansion
Ans: d
110. The fundamental factor in the selection of pavement type is
a) climatic condition
b) type and intensity of traffic
c) subgrade soil and drainage conditions
d) availability of funds for the construction project
Ans: b
111. Most suitable material for highway embankments is
a) granular soil
b) organic soil
c) silts
d) clays
Ans: a
112. Maximum daily traffic capacity of bituminous pavements is
a) 500 tonnes per day
b) 1000 tonnes per day
c) 1500 tonnes per day
d) 2000 tonnes per day
Ans: c
113. The most suitable equipment for compacting clayey soils is a
a) smooth wheeled roller
b) pneumatic tyred roller
c) sheep foot roller
d) vibrator
Ans: c
114. The aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is
a) 8 cubic meter
b) 10 cubic meter
c) 12 cubic meter
d) 15 cubic meter
Ans: c
115. The camber of shoulders in water bound macadam roads is
a) equal to the cross slope of pavement
b) less than the cross slope of pavement
c) greater than the cross slope of pavement
d) zero
Ans: a
116. The binder normally used in flexible pavement construction is
a) cement
b) lime
c) bitumen
d) none of the above
Ans: c
117. In highway construction, rolling starts from
a) sides and proceed to centre
b) centre and proceed to sides
c) one side and proceed to other side
d) any of the above
Ans: a
118. 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
Ans: c
119. In the penetration macadam construction, the bitumen is
a) sprayed after the aggregates are spread and compacted
b) premixed with aggregates and then spread
c) sprayed before the aggregates are spread and compacted
d) none of the above
Ans: a
120. 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
a) seal coat
b) tack coat
c) prime coat
d) spray of emulsion
Ans: b
121. Which of the following premix methods is used for base course ?
a) bituminous carpet
b) mastic asphalt
c) sheet asphalt
d) bituminous bound macadam
Ans: d
122. 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.
Ans: d
123. The suitable surfacing material for a bridge deck slab is
a) sheet asphalt
b) bituminous carpet
c) mastic asphalt
d) rolled asphalt
Ans: c
124. Which of the following is considered to be the highest quality construction in the group of black top pavements ?
a) mastic asphalt
b) sheet asphalt
c) bituminous carpet
d) bituminous concrete
Ans: d
125. The thickness of bituminous carpet varies from
a) 20 to 25 mm
b) 50 to 75 mm
c) 75 to 100 mm
d) 100 to 120 mm
Ans: a
126. Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?
a) mastic asphalt
b) sheet asphalt
c) bituminous carpet
d) bituminous concrete
Ans: b
127. In highway construction on super elevated curves, the rolling shall proceed from
a) sides towards the centre
b) centre towards the sides
c) lower edge towards the upper edge
d) upper edge towards the lower edge
Ans: c
128. The camber for hill roads in case of bituminous surfacing is adopted as
a) 2%
b) 2.5%
c) 3%
d) 4%
Ans: b
129. 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
Ans: a
130. The drain which is provided parallel to roadway to intercept and divert the water from hill slopes is known as
a) sloping drain
b) catchwater drain
c) side drain
d) cross drain
Ans: b
131. The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as
a) retaining wall
b) breast wall
c) parapet wall
d) none of the above
Ans: b
132. In hill roads the side drains arc provided
a) only on the hill side of road
b) only on the opposite side of hill
c) on both sides of road
d) none of the above
Ans: a