This presentation provides information on how Rejuvenators work in terms of Pavement Preservation for Local Agencies.

1. Chas Jordan, ENV SP, LEED GA
cjordan@pavetechinc.com
Pavement Rejuvenation
& Preservation

2. What is Pavement
Preservation?
• Asset Management Principles:
– Life Cycle Cost Benefit
– Maintaining Early to keep in “Like New”
Condition
• Pavement “Value”
• Preventive Maintenance
– Oil Changes?
– Change the Air Filter in your A/C Unit?
– Mow your lawn?
– All Examples of Preventive Maintenance

3. It’s kind of like going to the
dentist
Preventative Medicine is the
model we want to shoot for
In infrastructure, the longer we
wait the bigger the bill
When you brush your teeth, do
you brush only the worst teeth?
Why then would we only
address the worst roads?

4. The 2018 Corvette Stingray MSRP
$55,000
– Cost to change the oil?
– Cost to replace the engine?
Pretty easy choice right?
Imagine not changing the oil
in your taxpayer funded $78M
piece of equipment, every year!

5. The biggest challenge you
face on your roads?
They don’t last long
enough for the
amount of funding
you have!
What then is the
solution?
Is it more money?
What is the cost of inaction? A ton!

6. 0
20
40
60
80
100
Years
PCI“The Right Time”
Pavement Strategies
Rejuvenation
High Density Mineral Bond
Crack Seal
Micro-Surfacing
Cape Seal
Asphalt Overlay
Hot In-Place Recycling
Cold In-Place Recycling
Full Depth Reclamation

7. FHWA has been preaching
preservation for awhile now

8. FHWA has been preaching
preservation for awhile now

9. Common belief, HMA lasts
20 years then, we resurface
The typical Public Works Agency did the
same thing. Resurface, wait 20 years,
rinse (mill) and repeat.

10. We’ve focused on the dying or
dead, not the healthy roads

11. After decades of this though, a
change has occurred…

12. Condition
Time
$1 for preventive
maintenance
here
Is 3 to 10
times more
cost
effective
than here
“Right Treatment on the Right Road
at the Right Time”

13. The first significant
hardening of the
asphalt cement takes
place in the pugmill or
drum mixer where
heated aggregate is
mixed with hot asphalt
cement. During this
short mixing time, the
asphalt cement, which
is in very thin films, is
exposed to high
temperatures ranging
from 275 to 350º F.
Why Asphalt Deteriorates
Aging Begins

14. The roadway begins to deteriorate the moment it’s
paved. The worst part is it’s exponential. The viscosity
of the asphalt binder can go from 10-15K poise when
it’s only a few months old to several hundred thousand
after only a few years. In Florida this is how most roads
fail.
Oxidation takes its toll
Aging continues

15. FHWA recently unveiled their
EDC-4 Pavement Preservation

16. Thus, the secret of ensuring
a long service life of asphalt
in pavements is to retard
the aging process.
During the FHWA EDC workshop
the secret was revealed…

17. How to preserve your roads
without increasing funding!
What if there was a
way to get
someone else to
pay 80% of your
preservation
program?
That’s what we’ve
discovered and
want to share with
you.
Preservation extends life by 50%

18. So how is it less costly
earlier than later?
• Basic Cost Benefit Model –
– If a Road costs $150,000 to build (per
lane mile) and it has a 20 year life cycle
in 100 years you will spend $750,000 on
that mile of road.
– If you preserve with a $1 per SY
treatment early and then every five years
going forward, the asset can now last 40
years.
• If we estimate ~$7,000 per Lane Mile to
preserve
• $150,000 + ($7,000*4 treatments) = $178,000
for 40 Years
• In 100 years you will spend $445,000

20. Structural Issues Prevented

21. Structural Issues Prevented

22. Types of Pavement
Preservation Techniques
• Rejuvenators
• Crack Seals
• Fog Seals
• Slurry Seals / Scrub Seals
• Micro Surfacing
• Chip Seals
• Cape Seals

23. Rejuvenators
Maltene based rejuvenators are translucent and leave
pavement markings visible with no need for restriping,
retreatment occurs after 5 years

24. Rejuvenation
• Maltenes are the unstable component of
asphalt binder and they are affected by air,
UV rays, water, temperature changes, etc.
• It is the loss of the Maltenes from the
asphalt binder in the upper 3/8”-1/2” of
asphalt pavements that start the asphalt
deterioration process.

25. Rejuvenation
The
Maltenes

26. What are these things?
• Polar Compounds (Nitrogen Bases)
– Highly Reactive petroleum resins that act as a colloidal
dispersion stabilizer or “peptizer” for the asphaltene core; they
impact ductile and tensile strength properties to the mixture
• First Acidaffins
– Aromatic resinous petro-hydrocarbons, with or without S, O
and N, and provide a homologous or chemically compatible
dispersion agent for the peptized asphaltene
• Second Acidaffins
– Straight Chain or Cyclic unsaturated petro-hydrocarbons
(olefinic) which are semi-oily; semi-resinous physically. They
promote resistance to moisture intrusion and formulate proper
adhesion qualities to asphaltic concrete
• Paraffins (Saturates)
– Either straight or branch chain saturated hydrocarbons
(naphthene-aromatics) and are the truly OILY component of
asphaltic concrete and function as a gelling agent for the
asphalt compounds

27. How Rejuvenators work
Maltene based rejuvenators work by changing the
chemistry of the asphalt binder by replenishing the lost
maltenes back into the asphalt binder restoring its
asphaltene to maltene ratio back to nearly new levels
This in turn softens the pavement surface
restoring its flexibility and resistance to cracking

28. These products also work to provide a
long lasting seal of the pavement’s
surface preventing the intrusion of air
and moisture into it
How Rejuvenators work

29. Fog Seal COATING -
Seals the surface
Petroleum Maltene Based REJUVENATOR -
Penetrates down into pavement & seals the surface, CANNOT be worn away

30. Rejuvenation has now been
proven scientifically in three
distinct ways
1) With viscosity testing,
using the Dynamic
Sheer Rheometer
(DSR)
2) International
Roughness Index (IRI)
3) 3D high resolution
imaging!
2018 Polk County, Florida

31. Reclamite® Program - Tamarac
Below you can see the results of the viscosity
tests after treatment with Reclamite
The lower numbers illustrate how effective
Reclamite was reducing or softening the
asphalt binder

32. Hillsborough County
Reclamite® Program
Hillsborough County has a few long term
Reclamite® test site locations dating from 2004.
Recently state-of-the-art testing was performed.

33. Reclamite® treated 2-13-04, pic taken 5-20-05
Binder Street, Tampa

34. Reclamite® treated 2-13-04, pic taken 7-29-09
Binder Street, Tampa
Reclamite Treated
Untreated

35. Reclamite® treated 2-13-04, pic taken 2-24-17
Binder Street, Tampa
Untreated
Untreated

36. International Roughness Index
Binder Street
IRI values show the
treated section is less than
half as rough as the
untreated section.
This shows significant
effectiveness 14 years
after only one treatment of
Reclamite

37. 3D Imaging Data
Binder Street
“The way the 3D system quantifies raveling is by
breaking the image into tiles and color coding
the tiles that are considered “failed” in
blue. Again, there is a profound difference in
the surface that was treated versus the
untreated area.” Rob Olenoski, ICC

38. So… how do we test it?
1. ASTM Test D-2006-70 or “Free Maltene
Distribution”
1. “Rostler Method” – Determines the rejuvenator
efficacy and determines the ratio of resinous to oily
maltenes in the pavement surface
2. https://www.pavementpreservation.org/wp-
content/uploads/2017/03/FPPC335_Asphalt_Rejuve
nation.pdf

39. Bio-Based Products
Bio-Based products have come to market
that serve as solvents for the asphalt they
are applied to. These meet the criteria of
ASTM Test D-2007 or “SARA” but not that
of 2006-70.
Warnings:
• May disrupt the Asphalt Matrix
• May cause hazardous material issues
with roadway
• High VOCs

40. How to preserve your roads
without increasing funding!
With several Federal
Grant programs we
can actually get up
to 80% of your first
project paid for!
If you are interested
we can help the
City to apply for
the FHWA grant
for pavement
preservation! Preservation extends life by 50%