1.
The effective modulus of subgrade reaction for the subgrade layer in rigid
pavements is used as an input in the AASHTO design procedure after modifying
the composite modulus
of subgrade
reaction for:
a. Subbase thickness
b. Subbase elastic
modulus
c. Soil resilient
modulus
d. Faulting and
pumping
e. The potential loss
of subbase support due to erosion and the effect of rigid foundation near
subgrade surface
2. The property of concrete that is used in the AASHTO
design procedure for rigid pavements is:
a. Strength
b. Modulus of
elasticity
c. a and b
d. Modulus of
rupture
e. b and d
3. The major distresses that are of significance in
rigid pavement design are:
a. Joint faulting,
joint spalling, linear cracking, and pumping
b. Transverse
cracking, pumping, lane/shoulder drop off, and divided slab
c. Joint faulting,
lane/shoulder drop off, divided slab, and D-cracking
d. Corner
spalling, polished aggregate, scaling, and blow-up
e. Transverse
cracking, pumping, punch outs, and pop-outs
4. One of the following is not among the main causes of
joint faulting in rigid pavements:
a. Settlement due
to weak foundation
b. Curling of the
slab
c. Erosion in the
subgrade soil
d. Sever pumping
e. Concrete shrinkage
5. One of the following is not among the main causes of
joint spalling in rigid pavements:
a. Lack of joint
sealant and incompressible materials in the joint
b. High stresses
at the joint due to high traffic loading
c. Erosion in the
subgrade soil
d. Improper dowel
alignment
e. Freeze–thaw
cycles at the joint
6. The major causes of linear cracking in rigid
pavements are:
a. Repeated traffic
loading
b. Repeated
moisture loading
c. Curling
stresses
d. Improper dowel
alignment
e. a, b, and c
7. The major causes of pumping in rigid pavements are:
a. Water and fine
materials
b. Lack or
improper load transfer at the joint
c. Curling
stresses
d. Repeated traffic
loading
e. a, b, and d
8. The present serviceability index (PSI) for rigid
pavements is a function of:
a. Slope variance,
spalling, and pumping
b. Cracking,
faulting, and pumping
c. Slope variance,
cracking, and patching
d. Faulting,
spalling, and pumping
e. Slope variance,
faulting, and pumping
9. Curling stresses in rigid pavements occur during the
day in the form of:
a. Compressive
stresses at the top of the slab and tensile stresses at the bottom of the slab
b. Tensile
stresses at the top of the slab and compressive stresses at the bottom of the
slab
c. Only tensile
stresses at the top of the slab
d. Only
compressive stresses at the bottom of the slab
e. None of the
above
10. Curling stresses in rigid pavements occur during the
night in the form of:
a. Compressive
stresses at the top of the slab and tensile stresses at the bottom of the slab
b. Tensile stresses
at the top of the slab and compressive stresses at the bottom of the slab
c. Only
compressive stresses at the top of the slab
d. Only tensile
stresses at the bottom of the slab
e. None of the
above
11. Stresses due to traffic
loading in rigid pavements are ordered (in value) relative to the location of
the load as below:
a. Edge of the slab > corner of the slab
>
interior
of the slab
b. Corner of the
slab >
edge
of the slab>interior of the
slab
c. Corner of the
slab >
interior
of the slab>edge of the slab
d. Interior of the
slab>corner of the slab>edge of the slab
e. Interior of the
slab>edge of the slab>corner of the slab
12. Joints are provided in rigid pavements to:
a. Transfer load
b. Prevent pumping
c. Prevent
faulting
d. Prevent premature
cracks due to temperature and moisture changes from occurring
e. Prevent blow-up
13. One of the following is not among the types of
joints in rigid pavements:
a. Contraction
joints
b. Expansion
joints
c. Construction
joints
d. Longitudinal
joints
e. None of the above
14.
The type of joint that is used to relieve tensile stresses in rigid pavement
is:
a. Contraction joint
b. Expansion joint
c. Construction
joint
d. Longitudinal
joint
e. Tension joint
15. The type of joint that is used in the transverse
direction for the relief of compressive
stresses in rigid
pavement is:
a. Contraction
joint
b. Expansion joint
c. Construction
joint
d. Longitudinal
joint
e. Tension joint
16. The type of joint that is placed at the location of
contraction joint is called:
a. Contraction
joint
b. Expansion joint
c. Construction butt
joint
d. Longitudinal
joint
e. Tension joint
17. The type of joint that is placed at the location of
contraction joint is called:
a. Contraction
dummy groove joint
b. Expansion joint
c. Construction butt
joint
d. Longitudinal
joint
e. Tension joint
18. The type of joint that is used in case if work must
stop due to an emergency situation is:
a. Contraction
dummy groove joint
b. Contraction
pre-molded strip joint
c. Construction
butt joint
d. Construction key
joint
e. Longitudinal
joint
19. The type of
joint that is used to relieve curling and warping stresses in rigid pavement
is:
a. Contraction
joint
b. Expansion joint
c. Construction
joint
d. Longitudinal joint
e. Tension joint
20. For lane-at-a time construction of rigid pavements,
the proper type of longitudinal joint that should be
used is:
a. Butt joint
b. key joint
c. Dummy groove
joint
d. Ribbon joint
e. a or b