Correct Answers
A thin layer of mix will cool at the same rate whether it is sunny or cloudy -
ANSWERSFalse
A transverse joint should be compacted in the longitudinal direction unless the roller
cannot compact the joint because site restriction then it is permissible to be compacted
transversely - ANSWERSFalse
An approximate "rule of thumb" is for every _______ percent increase in air voids above
(6 to 7%) about _______ percent of the pavement life may be loss - ANSWERS1 and
10
An end plate (or end gate or edger plate) is attached to the end of the screed to restrict
the outward movement of the mix around the end of the screed - ANSWERSTrue
An extremely high paver speed - more than ______, for thick lift, may cause a lack of
responsiveness of the screed - ANSWERS83 feet per minute
Butt joints are acceptable when traffic will not pass over the joint prior to the next paving
operation - ANSWERSTrue
Durang, rolling, rolling wheels, are kept moist with water, and only enough fuel oil to
avoid picking up material - ANSWERSFalse
Elimination of segregation is the responsibility of - ANSWERSThose who produce and
lay assault mix
State Highway Departments who approve the design of the mix and inspect the final
product
Manufacturers who designed the market machinery for the paving industry.
For asphalt mixes, it can be expected that approximately ______ to _____ percent of
the theoretical maximum density of the mix will be realized in the mix when it passes out
from under a vibratory paver screed - ANSWERS70 to 80
If the air voids are above ______ percent for a SM-9.5A, the mix will be permeable to air
and water, and will not have the required durability - ANSWERS7 to 8
, If the mat is being laid down at a facer rate, then it can be rolled, the solution should be
to ______ - ANSWERSSlow down the paver
Use larger, wider rollers.
Use more rollers
If traffic will pass over the end of the paving, a butt joint will be permitted, provided
proper compaction is achieved - ANSWERSFalse
If traffic will pass over the transverse joint, constructive slubbed wage, at least_____feet
per inch of pavement depth, ahead of end of the full debt payment to provide for proper
compassion and protection of the full depth pavement - ANSWERS3
It typically takes ___t ow lengths (the length between the toe point, and the screed) after
a desired level is input for a screed to arrive at the new level - ANSWERS5
Cold lane - ANSWERSA previously paved lane
Hot lane - ANSWERSA lane being currently placed
Joint overlap - ANSWERSThe width, that the hot lane overlaps the cold lane
The low-density areas on radiographic image are created by - ANSWERSThis area is
typically at the outer edge of the cold lane taper in the joint overlap area
Extra material for compression - ANSWERSThe material beyond the anticipated, final
mat thickness
Put the typical compaction train in order - ANSWERSScreed.
Breakdown roller
Intermediate roller.
Finish roller.
Traffic
Indentations that remain in the surface of the mix after the rolling has been completed,
are called roller marks - ANSWERSTrue
Roughness or wash boarding is normally caused by improper operations of____ -
ANSWERSA vibratory roller