6-29.
Normally, what field test is used
to differentiate between unknown
bituminous materials?
1.
Heat-odor
2.
Volubility
3.
Water-mixing
4.
Penetration
6-30.
When you are performing the
volubility test, what material
will form a stringy undissolved
mass?
1.
Asphalt
2.
Asphalt cement
3.
Emulsion
4.
Tar
6-31.
Asphalt cutbacks are fluid
at room temperature.
1.
True
2.
False
6-32.
What grade of asphalt is indicated
by a field test in which the sharp
point of pencil penetrates the
asphalt with difficulty?
1.
Hard
2.
Medium
3.
Soft
4.
Medium hard
Learning Objective: Recognize
and compute estimates of
materials.
6-33.
What is the purpose of a prime
coat?
1.
Waterproof the surface
2.
Plug capillary voids
3.
Coat and bond loose
particles
4.
All of the above
6-34.
If the ROA is not known, what ROA
is used in the NCF for planning
purposes?
1. .1
2. .2
3. .3
4. .4
6-35.
6-36.
6-37.
6-38.
6-39.
How many gallons of prime coat
is require for a project 2 miles
long, 12 feet wide, waste factor
of 5 percent, and a ROA of 0.3
gal/sq yd?
1.
4435.2 gal
2.
5174.4 gal
3.
6336
gal
4.
7392
gal
What happens when a tack coat
is applied too heavily?
1.
2.
3.
4.
For
Soaks into the surface
material
The overlying coarse will
not stick to the surface
coarse
It will bleed into the
overlying coarse
It will cause the surface
coarse to crumble
the purpose of planning, what
is the NCF ROA for a tack coat?
1.
.10
2.
.15
3.
.20
4.
.25
A total of how many drums of tack
coat material is required for a
project 500 feet long, 50 feet
wide, waste factor of 5 percent,
and a ROA of .15?
1.
8.25 drums
2.
11.79 drums
3.
43.74 drums
4.
82.54 drums
You are tasked with a single
surface treatment of a road
20 miles long, 12 feet wide, and
a waste factor of 10 percent. A
100-square/yard test strip showed
that 2 tons of aggregate was used.
What is the rate of application of
aggregate in pounds per sq/yd?
1.
10
2.
20
3.
30
4.
40
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