12-29.
12-30.
12-31.
12-32.
12-33.
Which of the following bitumens
would be the recommended surface
for an airfield refueling point?
1.
Road tar
2.
Asphalt cement
3.
Asphalt emulsion
4.
Asphalt cutback
Which of the following bitumens
has a very limited storage time
and should not be exposed to
freezing temperatures?
1.
RTCB
2.
Asphalt cement
3.
Asphalt emu1sion
4.
RC asphalt cutback
Learning Objective: Identify
practices and procedures
associated with field and
laboratory identification of
unknown bituminous materials.
What test do you perform to
determine if a bitumen is an
asphalt, an emulsion, or a tar?
1.
Volubility
2.
Smear
3.
Pour
4.
Penetration
Asphalt cement can be
distinguished from asphalt cutback
by means of the what test?
1.
Field penetration
2.
Pour
3.
Volubility
4.
Stone coating
During the field test, a pencil
point penetrates slowly a sample
of asphalt cement with little
difficulty. What is the grade
of the asphalt cement?
1.
0-40
2.
40-85
3.
85-150
4.
150-300
12-34.
12-35.
12-36.
12-37.
12-38.
What is the probable identity of
an asphalt cutback sample that
pours like molasses and was
determined to be tacky as the
result of the smear test?
1.
RC-800
2.
MC-800
3.
SC-800
4.
AC-800
What type of cutback is indicated
when a sample gives off a strong
odor of kerosene when heated?
1.
Rapid curing
2.
Medium curing
3.
SlOW curing
When you mix an emulsion with damp
sand, what action identifies the
emulsion as a rapid-setting type?
1.
Readily mixes with the sand
2.
Partially coats the sand
3.
Does not mix with the sand
4.
A solidifying of the mixture
will occur
What test is used to distinguish
RTCB from RT-7?
1.
Pour
2.
Smear
3.
Heat-odor
4.
Solubility
Laboratory tests serve which of
the following purposes?
1.
2.
3.
4.
They establish safe handling
procedures
They provide positive
identification of bituminous
material
They establish a working mix
design
Each of the above
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