pavement preservation
TRANSCRIPT
Preservation For cash-strapped agencies looking to stretch
pavement maintenance d
will provide a review and
pavement preservation opavement preservation o
involved in the process.
So let’s see what is new in California
Preservation strapped agencies looking to stretch
e dollars, this presentation
and update of the various
options and the materials options and the materials
involved in the process.
So let’s see what is new in California
rvation
ed 1987
ce 1987 the CCSA has served the
California as the Pavement Pr
g those years we have also grown
Preservation
We changed our name to better reflect the organization
the Agencies in and around the Sta
Preservation go to organization.
n from chip seal to all facets of Pa
Preservation
We changed our name to better reflect the organization.
TreatmentsCape Seal Cold In-Place RecCold In-Place RecConventional ChiConventional FogConventional MicSurfacing Crack Seal Full Depth ReclamHot In-Place RecyModified Chip SePatching Patching Premium Chip SePremium Micro SPriming Rejuvenating FogRejuvenating ScrSlurry Seal
Typical
Gap
DGACDGAC
FOG SEAL
Typical application rates fo
OGFC: 0.10-0.15 gal/sq.
Gap Graded: 0.09-0.13 gal/s
DGAC: 0.07- 0.10 gal/sq. DGAC: 0.07- 0.10 gal/sq.
Good Candidates for fog seal
Aged OxidizedDense-Graded
Open / Gap GChip SealsChip Seals
Do not apply Rejuvenating Fog SealMicro
Candidates for fog seal
Aged OxidizedGraded HMA
Graded HMAChip SealsChip Seals
Rejuvenating Fog Seal over New Slurry Se
Micro
TreatmentsCape Seal Cold In-Place RecCold In-Place RecConventional ChiConventional FogConventional MicSurfacing Crack Seal Full Depth ReclamHot In-Place RecyModified Chip SePatching Patching Premium Chip SePremium Micro SPriming Rejuvenating FogRejuvenating ScrSlurry Seal Ultra Thin Lift Ov
Crack SealingCrack Sealing
spray-apply a binder and aggregate is applied.
nd immediately after a coveaggregate is applied.
Preservation on US-280
Preservation on US-280
pplied at one stone thickness.
Typically 12-16 lbs per Syd
Micro-Surfacing
pplied at Multi-Stone thicknesspplied at Multi-Stone thickness
Typically 25-30 lbs per Syd
y use? Let’s lookcline Village) Lake
Slurry Seal
Nothing Done after
ok at Lake Shore Dke Tahoe after 6 ye
Micro-Surfacing
Nothing Done after
Slurry Seal
Surface without Slurry or Micro
Micro-Surfacing
Surface without Slurry or Micro-Surfacing after 6 years
chemistries have gotten much betterchemistries have gotten much better
emulsion, designed to flow into cracks
when used in a scrub seal application.
Can fill up to 3/8 inch cracks.
5/16” AND 3/8 “ WORK BEST FOR COVER 5/16” AND 3/8 “ WORK BEST FOR COVER
AGG
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum non ante in ipsum iaculis interdum
Sed laoreet elementum nisl, ut dictum elit rhoncus sit amet
Quisque lobortis, felis in condimentum Quisque lobortis, felis in condimentum bibendum, justo libero malesuada eros, a vulputate dolor ante sit amet dolor
flow into cracks
application.
Can fill up to 3/8 inch cracks.
AND 3/8 “ WORK BEST FOR COVER AND 3/8 “ WORK BEST FOR COVER
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum non ante in ipsum
Sed laoreet elementum nisl, ut dictum elit
Quisque lobortis, felis in condimentum Quisque lobortis, felis in condimentum bibendum, justo libero malesuada eros, a
What is new in Pavement Preservation Research
For years agency engineers have asked for research data to prove the For years agency engineers have asked for research data to prove the claims that many in the preservation world had made. We had many observations but little independent research. What research we did have was not done in controlled sections and had a high degree of variability and was not usually not well documented, until NCAT.
What is new in Pavement Preservation Research
For years agency engineers have asked for research data to prove the For years agency engineers have asked for research data to prove the claims that many in the preservation world had made. We had many observations but little independent research. What research we did have was not done in controlled sections and had a high degree of variability and was not usually not well documented, until NCAT.
TrackTrack
Lee Road 159Lee Road 159Lee Road 159Lee Road 159
USUS
Track Research Goals
• Help state DOTs implement positive change• Help state DOTs implement positive change• Promote real innovation for the industry.
• Track Research overview• Track preservation (APT)
• Lee Road 159 (low ADT)• 2015 research cycle (high ADT)
Help state DOTs implement positive changeHelp state DOTs implement positive changePromote real innovation for the industry.
2015 research cycle (high ADT)
Preservation on the Track
• Chip seal• Chip seal
• Scrub seal
• Scrub Cape seal
• Micro surface
• Thinlay
• Thinlay Scrub Cape seals.Thinlay Scrub Cape seals.
Preservation on the Track
Benefits of Preservation
Benefits of Preservation
Benefits of Preservation
• Life extending benefit
• Condition improving benefit
• f (pretreatment condition)
Life extending benefit
Condition improving benefit
pretreatment condition)
Preservation on Lee Road 159
Track Pavement Preservation
Significant Interim Findings
• Durability of micro surface
• Viability of asphalt based high friction
• Performance of lightweight aggregate chip seal
• Differences in crack sealing (blow• Differences in crack sealing (blow
• Demonstration of unique treatment
− Scrub Seal, Cap seal, D
• Success of high traffic pavement preservation
• Short term condition improvement methodology
• Long term life extending benefit
Durability of micro surface (Track and US-280)
Viability of asphalt based high friction surfaces
of lightweight aggregate chip seal
in crack sealing (blow-band vs route-fill)in crack sealing (blow-band vs route-fill)
Demonstration of unique treatment combinations
Double Micro,
high traffic pavement preservation
Short term condition improvement methodology
Long term life extending benefit methodology.
Washington
MontanaNorth Dakota
Minnesota(upper pennisula)
NCAT PaveNCAT PaveTrackTrack
Nevada
Idaho
Montana
Wyoming
ColoradoUtah
New MexicoArizona
Oklahoma
Kansas
Nebraska
South Dakota
Wisconsin
Illinois
Iowa
Missouri
Arkansas
MississippiNew Mexico
Arizona
TexasLouisiana
Mississippi
Pre-2015, 2015
Vermont
Massachusetts
Maine
New HampshireMichigan
(upper pennisula)
vement Testvement TestTrackTrack
Wisconsin
Illinois
Missouri
Arkansas
Alabama
Tennessee
Michigan
Pennsylvania
New York
GeorgiaMississippi
Kentucky
South Carolina
North Carolina
MarylandOhioDelaware
IndianaWest
Virginia
New Jersey
Connecticut
Massachusetts
Rhode Island
Virginia
FHWA
Private Sector SCargill Deicing Te
Collaborative A
Kraton
Modified Asphalt
Louisiana
Alabama
(DOT &
DEM)
Georgia
Florida
Mississippi Modified Asphalt
Oldcastle
Polycon Manu
Seneca P
Shell Sulfur
Trinidad Lak
-Cycle Track Conference
••HigHig
••NaNa
••••
March 6-8, 2018
Cycle Track Conference
igh RAP/RAS balanced mix igh RAP/RAS balanced mix
Nationwide pavement preserNationwide pavement preser
••Preventing reflective distrePreventing reflective distre••Preventing reflective distrePreventing reflective distre
••Optimized structural desiOptimized structural desi
••ImplementationImplementation
8, 2018
Dr. R. Buzz Powell, PEAssista
Credit needs to be given to
Assista
277 Technology Parkway
Twitter:
Dr. R. Buzz Powell, PEistant Director & Test Track Manager
to Dr. Buzz Powell and NCAT
istant Director & Test Track Manager
277 Technology Parkway
Auburn, AL 36830
Phone: (334) 844-6857
Cell: (334) 750-6293Cell: (334) 750-6293
Email: [email protected]
Web: www.pavetrack.com
Twitter: www.twitter.com/pavetrack
So what can we take away from the findings?
• Chip seal• Chip seal
• Scrub seal
• Scrub Cape seal
• Micro surface
• Thinlay
• Thinlay Scrub Cape seals.
So what can we take away from the findings?
Thinlay Scrub Cape seals.
Preservation
is HiMod emulsions for
Micro Surfacing and Slurry Seal
Emulsions
The Performance:
This is the toughest emulsion in this category; it can handle the early damage.
Project selection same as any other Micro or Slurry seal project.
Mix design is the same.Mix design is the same.
Inspection is the same.
Emulsion Specification is different.
Construction must use augured
The emulsion performance leads to a much tougher, more durable material.
emulsions for
and Slurry Seal
emulsion in this category; the early damage.
Project selection same as any other Micro
Emulsion Specification is different.
augured box.
erformance leads to a much tougher, more durable material.
1. All samples Used the same Aggregate2. All samples used the same aggregate gradation3. All Samples Used the same amount of Asphalt emulsion.
Only difference is in the Amount and Type of Polymer
revolutions
#1 HiModType II
#2 Micro
Only difference is in the Amount and Type of Polymer sample.
Type II
2. All samples used the same aggregate gradation3. All Samples Used the same amount of Asphalt emulsion.
Only difference is in the Amount and Type of Polymer in
#2 Micro Type II
Only difference is in the Amount and Type of Polymer in
ConveSlurr
Ty
Power Steering Burn Test. Five turns to left and five turns to the right.
Conventional Micro on the left versus HiMod Micro on the right.
Same rock, both down for 11 months.
93F air, surface temp 120F.
Power Steering Burn Test. Five turns to left and five turns to the right.
Micro on the right.
Comparison one is
tearing, the other is scuffing. After
service, 90% reduction in power steering burns in
cul-de-sacs
1-31-20141-31-2014
2.5% latex Type II Slurry
Comparison one is
scuffing. After one week of
service, 90% reduction in power steering burns in
HiMod Type II Slur
90% reduction in power Steering
Himod Emulsion using the same rock and
emulsion content.
Steering Burns with
Emulsion using the same rock and
emulsion content.
THANK THANK THANK THANK THANK THANK THANK THANK
QUESTIONS?QUESTIONS?QUESTIONS?QUESTIONS?
SCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT [email protected]@[email protected]@ERGON.COM
1(909)8291(909)8291(909)8291(909)829
THANK THANK THANK THANK YOUYOUYOUYOUTHANK THANK THANK THANK YOUYOUYOUYOU
QUESTIONS?QUESTIONS?QUESTIONS?QUESTIONS?
SCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT METCALFSCOTT [email protected]@[email protected]@ERGON.COM
1(909)8291(909)8291(909)8291(909)829----0505050505050505