ASPHALT ANSWERS
ing in regards to how thick your mat or
lift is. In my experience, the roller oper-
ator needs to take note not to get into a
hurry as traveling to fast will cause gaps
or ripples in your mat. If the operator
isn’t running the correct settings, or
traveling at the correct speeds, it can af-
fect the quality of your mat and overall
life of the pavement.
Roller Passes
The roller operator starts compaction
at the tie-in points and follows the edge
from there mainly using dynamic vibra-
tion, thus increasing the effect of com-
paction. Best practices dictate that the
intermediate pass should be done with
a pneumatic roller as the tires compact
in a different “kneading” motion, add-
ing to the density numbers. The final
roller pass is generally completed with a
steel drum under static in an attempt to
“iron out” any remaining irregularities
such as lines left by the drum, or tire
marks by the pneumatic roller, etc.
Roller Passes
While the industry is shifting on
different mix designs to increase life
expectancy or decrease air voids, one
important factor that will remain is
the compaction you have on your mat
directly impacts the quality and life of
your pavement. These small steps can
make the difference in a good job versus
a great job. And great jobs get referrals.
We would be remiss if we didn’t
acknowledge the stress we all have
been going through the last couple of
months. On behalf of the entire in-
dustry, we salute those who have been
deemed “essential” and look forward to
getting back to normal.
John Greaney is a Territory Manager for
LeeBoy and can be contacted
at [email protected]
For More Information On This Advertiser Please Visit www.CallAPE.com/e-inquiry
www.callape.com
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1.800.210.5923