4-24.
What waste factor, if any, should
be applied to a concrete estimate
of 220 cubic yards?
1. 5%
2.
10%
3.
15%
4. None
4-25.
Determine the total number of sacks
of cement required for a design
project that uses a total volume of
180 cubic yard of concrete? (Use
6.5 sacks per cubic yard.)
1.
1,000
2.
1,170
3.
1,240
4.
1,287
Learning Objective: Identify
methods and procedures used in the
design of bituminous mixtures.
4-26.
The objective of bituminous mix
design is to determine which of the
following factors?
1.
The most durable mix possible
2.
The most workable mix
3.
The most economical blend that
will meet all specified
requirements
4.
The most stable mix with the
ability to withstand all
possible traffic loads
4-27.
The aggregate blend must achieve a
specified gradation. Your trial
batches are based on selected
percentages from what source?
1.
Project specifications
2.
TM 5-337
3.
NAVFAC MO-330
4.
U. S. Army Corps of Engineers
Pavement Design Manual
4-28.
The specification limits for the
gradation blend are established by
what authority or publication?
1.
By project specifications
2.
By TM 5-337
3.
By NAVFAC MO-330
4.
U. S. Army Corps of Engineers
4-29.
The final bitumen mix design is
affected by all of the following
variables except the
1.
use of mix
2.
minimum aggregate size
3.
binder
4.
loading
4-30.
Which of the following data is
required to prepare the test
specimens?
1.
Flow
2.
Percentage of voids
3.
Specific gravity of the
aggregates
4.
Total mix unit weight
IN ANSWERING QUESTION 4-31, REFER TO TABLE
17-7 IN YOUR TEXTBOOK.
4-31
4-32
4-33
What flow rate is acceptable for a
surface course that serves as a
high-pressure tire pavement?
1. 16 or less
2. 20 or less
3. 2% - 4%
4. 5% - 7%
When verifying the test results
with the criteria for a particular
property, you should use the OAC
from that particular test only.
1.
True
2.
False
The Marshall test method requires
no special modification until the
1-inch plus aggregate exceeds what
percentage of the total aggregate?
1.
5%
2.
7%
3.
10%
4.
12%
4-34.
You have determined the optimum
bitumen content to be 5.5 percent.
The aggregate will be what per-
centage of the mix?
1.
100.0%
2.
97.8%
3.
94.5%
4.
89.0%
4-35.
When you perform the tests for
cold-mix asphalts, what is the
maximum moisture content of the
aggregate by weight?
1.
1%
2.
2%
3.
5%
4.
7%
Learning Objective: Identify
the general methods of soil
stabilization.
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