Learning Objective: Identify
the properties of bituminous
surfacing materials.
6-20.
What is/are the function(s) of the
aggregates in a asphalt surface?
1.
Transmits the load from the
surface to the subgrade
2.
Absorbs the abrasive wear
of the traffic
3.
Provides a nonskid surface
4.
All of the above
6-21.
Which of the following factors
is required to support the bearing
action on a bituminous wearing
surface?
1.
Larger aggregates placed
in the mix design
2.
Subgrade and base course
must have adequate thickness,
strength, cohesion, and
bearing capacity
3.
Upgrade the amount of asphalt
in the mix
4.
Give the mix adequate curing
time
6-22.
Which of the following is a
bituminous surfacing material?
1.
Emulsion
2.
Tar
3.
Asphalt bitumen
4.
Each of the above
6-23.
A container of bituminous material
labeled with the symbol AC indi-
cates it contains which of the
following materials?
1.
Asphalt cutback
2.
Asphalt cement
3.
Asphalt emulsion
4.
Anionic-cationic asphalt
6-24.
When used with asphalt cement,
which of the following distillates
allows for slow curing after
application to a roadway?
1.
Naphtha
2.
Kerosene
3.
Fuel oil
4.
Gasoline
6-25.
Which of the following viscosity
grades of an MC asphalt bitumen
is considered the most fluid?
1.
30 to 60
2.
200 to 800
3.
800 to 1,000
4.
1,000 to 3,000
6-26.
When added to asphalt cement,
which of the following produces
an asphalt emulsion?
1.
Water only
2.
Soap only
3.
Water and soap
4.
Kerosene
6-27.
What road tar symbol designates
a hot tar?
1.
RT 1
2.
RT 2
3.
RT 5
4.
RT 9
Learning Objective: Recognize
the test for identifying
bituminous materials.
6-28.
Field identification of bituminous
materials found stockpiled in
unmarked containers is necessary
for which of the following
reasons?
1.
To determine the type and
method of construction the
material can be used for
2.
To establish safe handling
practices for the material
3.
To determine type and quality
of equipment needed
4.
All of the above
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