Asphalt Pavement Magazine - September/October 2017 - 23

Thinlays with NAPA President Mike Acott
"Any time we place an asphalt mixture, its function is to provide a smooth, safe,
long-lasting surface. The difference is that Thinlay mixes are designed for pavement
preservation, which is often described as keeping good pavements good."
that provide a high level of
performance, which includes a
smooth ride and long life; that
are cost-effective to build and
maintain; and that can be built,
maintained, and expanded with
minimal delay for the driving
public. Thinlay™ meets these
needs and expectations.
FPO: What is a Thinlay?
Acott: Thinlays are thin-lift
asphalt overlays designed for
pavement preservation and that
can successfully extend the life
of structurally sound pavements.
They can be placed as thin as
5/8 inch, but may be thicker
when required to correct surface
distresses, such as cracking,
rutting, or roughness. The mixes
use the same materials as other
asphalt mixtures - aggregates,
binders, and additives - and
may be produced by any asphalt
mix producer and placed by any
asphalt laydown contractor.
FPO: Does Thinlay replace
conventional overlay
materials?
Acott: No, Thinlays don't
replace conventional overlays,
which are more appropriate
when more significant structural,
roughness, or drainage
improvements need to be
addressed. As with other pavement
preservation tools, Thinlay
mixes aim to extend the life of a
structurally sound pavement that
is in good condition with minor or
no distress.

FPO: How does the function
of Thinlays differ from
traditional asphalt strategies,
such as overlays or inlays?
Acott: Overall, I don't believe
many people would see a different
function for Thinlays versus
traditional strategies. Any time
we place an asphalt mixture, its
function is to provide a smooth,
safe, long-lasting surface. The
difference is that Thinlay mixes are
designed for pavement preservation,
which is often described as keeping
good pavements good. They are
designed to be durable and crack
resistant, but, like other pavement
preservation strategies, they will
not correct structural distresses,
such as fatigue cracking. This is
why we stress the need to apply the
right treatment at the right time to
the right pavement.

when applied on a pavement in
poor condition.
Thinlays are excellent for
correcting raveling and restoring
skid-resistance. They can correct
minor rutting (less than a quarter
inch), and they are also the only
preservation treatment that can
offer a significant improvement in
ride quality. However, a Thinlay
cannot be expected to make an
excessively rough road smooth.
Thinlays are also as good as or
better than any other treatment for
sealing longitudinal and transverse
cracking. When a pavement has
isolated alligator cracking, Thinlays
can be used if these areas are
patched before overlaying. Thinlays
may also be used after milling to
improve smoothness or profile, or
when distressed surface layers have
been removed.

FPO: What types of roadways
are good candidates for a
Thinlay application?

FPO: What attributes of
Thinlays make them wellsuited for preserving pavement
condition?

Acott: Thinlays can address
most pavement surface issues,
if the severity of these issues is
not excessive, which is why it is
important to evaluate the extent
and severity of any distresses to
determine before any pavement
preservation treatment is applied.
In fact, a New Jersey Department
of Transportation official recently
commented that when a Thinlay
is applied to a road in need of
preservation but in otherwise
good condition, the state is getting
about 14 years of life from the thin
overlay versus just seven years

Acott: When it comes to
performance, the data shows
that Thinlays outperform other
preservation treatments for most
pavement conditions. Because
Thinlays can correct surface
defects, they are also better than
other pavement preservation
treatments at improving ride
quality, reducing noise, and
improving surface drainage. They
can also strengthen the pavement
structure. Because no special
equipment is needed to produce or
place Thinlay mixes, a wide number
of contractors are available to do
continued on page 25

Asphalt Pavement Magazine - September/October 2017 * 23



Table of Contents for the Digital Edition of Asphalt Pavement Magazine - September/October 2017

Chairman’s Commentary
Industry News
Back to Basics: Designed to Perform
NAPA President Mike Acott Talks About Thinlays
Asphalt Pavement Alliance 2016 Perpetual Pavement Awards
PerRoad Version 4.3: Perpetual Pavement Design Software
Tools for the Trade
Industry Calendar
Index of Advertisers/Advertisers.com
Asphalt Pavement Magazine - September/October 2017 - Intro
Asphalt Pavement Magazine - September/October 2017 - cover1
Asphalt Pavement Magazine - September/October 2017 - cover2
Asphalt Pavement Magazine - September/October 2017 - 3
Asphalt Pavement Magazine - September/October 2017 - 4
Asphalt Pavement Magazine - September/October 2017 - 5
Asphalt Pavement Magazine - September/October 2017 - 6
Asphalt Pavement Magazine - September/October 2017 - 7
Asphalt Pavement Magazine - September/October 2017 - 8
Asphalt Pavement Magazine - September/October 2017 - Chairman’s Commentary
Asphalt Pavement Magazine - September/October 2017 - 10
Asphalt Pavement Magazine - September/October 2017 - Industry News
Asphalt Pavement Magazine - September/October 2017 - 12
Asphalt Pavement Magazine - September/October 2017 - 13
Asphalt Pavement Magazine - September/October 2017 - 14
Asphalt Pavement Magazine - September/October 2017 - 15
Asphalt Pavement Magazine - September/October 2017 - 16
Asphalt Pavement Magazine - September/October 2017 - 17
Asphalt Pavement Magazine - September/October 2017 - 18
Asphalt Pavement Magazine - September/October 2017 - Back to Basics: Designed to Perform
Asphalt Pavement Magazine - September/October 2017 - 20
Asphalt Pavement Magazine - September/October 2017 - 21
Asphalt Pavement Magazine - September/October 2017 - NAPA President Mike Acott Talks About Thinlays
Asphalt Pavement Magazine - September/October 2017 - 23
Asphalt Pavement Magazine - September/October 2017 - 24
Asphalt Pavement Magazine - September/October 2017 - 25
Asphalt Pavement Magazine - September/October 2017 - 26
Asphalt Pavement Magazine - September/October 2017 - 27
Asphalt Pavement Magazine - September/October 2017 - 28
Asphalt Pavement Magazine - September/October 2017 - 29
Asphalt Pavement Magazine - September/October 2017 - 30
Asphalt Pavement Magazine - September/October 2017 - 31
Asphalt Pavement Magazine - September/October 2017 - Asphalt Pavement Alliance 2016 Perpetual Pavement Awards
Asphalt Pavement Magazine - September/October 2017 - 33
Asphalt Pavement Magazine - September/October 2017 - 34
Asphalt Pavement Magazine - September/October 2017 - 35
Asphalt Pavement Magazine - September/October 2017 - 36
Asphalt Pavement Magazine - September/October 2017 - 37
Asphalt Pavement Magazine - September/October 2017 - 38
Asphalt Pavement Magazine - September/October 2017 - 39
Asphalt Pavement Magazine - September/October 2017 - PerRoad Version 4.3: Perpetual Pavement Design Software
Asphalt Pavement Magazine - September/October 2017 - 41
Asphalt Pavement Magazine - September/October 2017 - 42
Asphalt Pavement Magazine - September/October 2017 - 43
Asphalt Pavement Magazine - September/October 2017 - 44
Asphalt Pavement Magazine - September/October 2017 - Tools for the Trade
Asphalt Pavement Magazine - September/October 2017 - 46
Asphalt Pavement Magazine - September/October 2017 - 47
Asphalt Pavement Magazine - September/October 2017 - 48
Asphalt Pavement Magazine - September/October 2017 - 49
Asphalt Pavement Magazine - September/October 2017 - 50
Asphalt Pavement Magazine - September/October 2017 - 51
Asphalt Pavement Magazine - September/October 2017 - 52
Asphalt Pavement Magazine - September/October 2017 - Industry Calendar
Asphalt Pavement Magazine - September/October 2017 - 54
Asphalt Pavement Magazine - September/October 2017 - Index of Advertisers/Advertisers.com
Asphalt Pavement Magazine - September/October 2017 - 56
Asphalt Pavement Magazine - September/October 2017 - 57
Asphalt Pavement Magazine - September/October 2017 - 58
Asphalt Pavement Magazine - September/October 2017 - cover3
Asphalt Pavement Magazine - September/October 2017 - cover4
Asphalt Pavement Magazine - September/October 2017 - outsert1
Asphalt Pavement Magazine - September/October 2017 - outsert2
Asphalt Pavement Magazine - September/October 2017 - BG1
Asphalt Pavement Magazine - September/October 2017 - BG2
Asphalt Pavement Magazine - September/October 2017 - BG3
Asphalt Pavement Magazine - September/October 2017 - BG4
Asphalt Pavement Magazine - September/October 2017 - BG5
Asphalt Pavement Magazine - September/October 2017 - BG6
Asphalt Pavement Magazine - September/October 2017 - BG7
Asphalt Pavement Magazine - September/October 2017 - BG8
Asphalt Pavement Magazine - September/October 2017 - BG9
Asphalt Pavement Magazine - September/October 2017 - BG10
Asphalt Pavement Magazine - September/October 2017 - BG11
Asphalt Pavement Magazine - September/October 2017 - BG12
Asphalt Pavement Magazine - September/October 2017 - BG13
Asphalt Pavement Magazine - September/October 2017 - BG14
Asphalt Pavement Magazine - September/October 2017 - BG15
Asphalt Pavement Magazine - September/October 2017 - BG16
Asphalt Pavement Magazine - September/October 2017 - BG17
Asphalt Pavement Magazine - September/October 2017 - BG18
Asphalt Pavement Magazine - September/October 2017 - BG19
Asphalt Pavement Magazine - September/October 2017 - BG20
Asphalt Pavement Magazine - September/October 2017 - BG21
Asphalt Pavement Magazine - September/October 2017 - BG22
Asphalt Pavement Magazine - September/October 2017 - BG23
Asphalt Pavement Magazine - September/October 2017 - BG24
Asphalt Pavement Magazine - September/October 2017 - BG25
Asphalt Pavement Magazine - September/October 2017 - BG26
Asphalt Pavement Magazine - September/October 2017 - BG27
Asphalt Pavement Magazine - September/October 2017 - BG28
Asphalt Pavement Magazine - September/October 2017 - BG29
Asphalt Pavement Magazine - September/October 2017 - BG30
Asphalt Pavement Magazine - September/October 2017 - BG31
Asphalt Pavement Magazine - September/October 2017 - BG32
Asphalt Pavement Magazine - September/October 2017 - BG33
Asphalt Pavement Magazine - September/October 2017 - BG34
Asphalt Pavement Magazine - September/October 2017 - BG35
Asphalt Pavement Magazine - September/October 2017 - BG36
Asphalt Pavement Magazine - September/October 2017 - BG37
Asphalt Pavement Magazine - September/October 2017 - BG38
Asphalt Pavement Magazine - September/October 2017 - BG39
Asphalt Pavement Magazine - September/October 2017 - BG40
https://www.nxtbook.com/naylor/NAPS/NAPS0318
https://www.nxtbook.com/naylor/NAPS/NAPG0018
https://www.nxtbook.com/naylor/NAPS/NAPS0218
https://www.nxtbook.com/naylor/NAPS/NAPS0118
https://www.nxtbook.com/naylor/NAPS/NAPS0617
https://www.nxtbook.com/naylor/NAPS/NAPS0517
https://www.nxtbook.com/naylor/NAPS/NAPS0417
https://www.nxtbook.com/naylor/NAPS/NAPS0317
https://www.nxtbook.com/naylor/NAPS/NAPS0217
https://www.nxtbook.com/naylor/NAPS/NAPS0117
https://www.nxtbook.com/naylor/NAPS/NAPS0616
https://www.nxtbook.com/naylor/NAPS/NAPS0516
https://www.nxtbook.com/naylor/NAPS/NAPS0416
https://www.nxtbook.com/naylor/NAPS/NAPS0316
https://www.nxtbook.com/naylor/NAPS/NAPG0016
https://www.nxtbook.com/naylor/NAPS/NAPS0216
https://www.nxtbook.com/naylor/NAPS/NAPS0116
https://www.nxtbook.com/naylor/NAPS/NAPS0615
https://www.nxtbook.com/naylor/NAPS/NAPS0515
https://www.nxtbook.com/naylor/NAPS/NAPS0415
https://www.nxtbook.com/naylor/NAPS/NAPS0315
https://www.nxtbook.com/naylor/NAPS/NAPG0015
https://www.nxtbook.com/naylor/NAPS/NAPS0215
https://www.nxtbook.com/naylor/NAPS/NAPS0115
https://www.nxtbookmedia.com