the 3 r the 3 r’’ss - cornell local roads programr o ad s c or n e ll l oc al r o ad s am p ro...
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Road Rehabilitation TechniquesRoad Rehabilitation TechniquesCornell Local Roads
Cornell Local Roads Program 2008
Program 2008
The 3 RThe 3 R’’ss
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Pavement ManagementPavement Management
•• Last YearLast Year’’s Budgets Budget•• This YearThis Year’’s Budgets Budget
•• Squeaky WheelSqueaky Wheel•• Fire FightingFire Fighting
•• PoliticalPolitical
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Do nothingDo nothingDrainage maintenanceDrainage maintenance
Crack repairsCrack repairsPatchingPatching
Area repairsArea repairsWearing coursesWearing courses
OverlaysOverlaysRecyclingRecycling
ReclamationReclamationTotal reconstructionTotal reconstruction
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Pavement ManagementPavement Management
Right Treatment Right Treatment Right PlaceRight Place
Right TimeRight Time
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Drainage maintenanceDrainage maintenance
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The Right TimeThe Right Time
•• Windows of opportunity for Windows of opportunity for treatment.treatment.
•• Treat the pavement early.Treat the pavement early.•• Less expensive to keep good Less expensive to keep good
roads good.roads good.
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Pavement ManagementPavement Management
IdentifyIdentifycandidates for work?candidates for work?
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Network Level Windshield Survey
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Pavement Surface ScorePavement Surface Scorefor Jones Road for Jones Road (1.3 miles)(1.3 miles)
•• 10 10 –– 9: Excellent9: Excellent•• 7 7 –– 8: Good8: Good•• 6: Fair6: Fair•• <5: Poor<5: Poor
RatingRating……66
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Pavement Surface ScorePavement Surface Score
•• 10 10 –– 9: Do Nothing9: Do Nothing•• 8: Crack Seal8: Crack Seal•• 7: PM Paving7: PM Paving•• 6: Rehab6: Rehab•• <5: Major Rehab/Replace<5: Major Rehab/Replace
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Typical Pavement Deterioration Curvefrom Surface Score History
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Flex/Overlay
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The Right TreatmentThe Right Treatment
•• Let the road tell you what needs to be doneLet the road tell you what needs to be done•• Fix the disease, NOT the symptomsFix the disease, NOT the symptoms
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Typical Pavement Deterioration Curvefrom Surface Score History
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Flex/Overlay
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Pavement Performance CurvePavement Performance Curveand Windows of Opportunityand Windows of OpportunityDo Nothing
Non-Paving PM
PM Paving
Multi-Course
MajorRehab/Recon
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Crack repairsCrack repairs
SealingSealing
• Working cracks• Prevents the intrusion of
water and debris into the crack
FillingFilling
• Nonworking cracks • Reduces infiltration of
water and to reinforce the adjacent pavement
Flush-Fill ReservoirOverband
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PatchingPatching
YearYear--round activityround activityCold Cold Throw and RollThrow and Roll
HotHotSemiSemi--permanent permanent Spray patchSpray patch
Does not fix the Does not fix the problemproblem
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Area RepairsArea Repairs
Cut out and replaceCut out and replaceFixes problemFixes problemNot wastefulNot wasteful
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Wearing CoursesWearing Courses
Large varietyLarge varietyVery cost effectiveVery cost effective
Cracks and other defects will reflect throughCracks and other defects will reflect through
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Wearing CoursesWearing Courses
Wate
rproo
f pav
emen
t
Wate
rproo
f pav
emen
t
Restore
s skid
resis
tance
Restore
s skid
resis
tance
Restore
s oxid
ized s
urfac
e
Restore
s oxid
ized s
urfac
e
True &
leve
l mino
r ruts
True &
leve
l mino
r ruts
Chip sealChip sealSlurry sealSlurry sealMicropaveMicropaveNovaChipNovaChipThin overlayThin overlay
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Pavement Performance CurvePavement Performance Curveand Windows of Opportunityand Windows of OpportunityDo Nothing
Non-Paving PM
PM Paving
Multi-Course
MajorRehab/Recon
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OverlaysOverlays
>1>11/21/2”” thickthickAdds strengthAdds strengthGood timing criticalGood timing criticalCurb reveal problemsCurb reveal problems
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The Right PlaceThe Right Place
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Do nothingDo nothingDrainage maintenanceDrainage maintenance
Crack repairsCrack repairsPatchingPatching
Area repairsArea repairsWearing coursesWearing courses
OverlaysOverlaysRecyclingRecycling
ReclamationReclamationTotal reconstructionTotal reconstruction
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Pavement Performance CurvePavement Performance Curveand Windows of Opportunityand Windows of OpportunityDo Nothing
Non-Paving PM
PM Paving
Multi-Course
MajorRehab/Recon
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RecyclingRecyclingEnvironmentally friendlyEnvironmentally friendly
Over a BILLION tons annuallyOver a BILLION tons annually
Fixes cracksFixes cracksDoes not fix subDoes not fix sub--basebase
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Reclamation/StabilizationReclamation/Stabilization
Almost a new roadAlmost a new roadRepairs BaseRepairs BaseCost EffectiveCost Effective
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Total reconstructionTotal reconstruction
Very expensiveVery expensiveMay be only optionMay be only optionBrand new road when doneBrand new road when done
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Do nothingDo nothingDrainage maintenanceDrainage maintenance
Crack repairsCrack repairsPatchingPatching
Area repairsArea repairsWearing coursesWearing courses
OverlaysOverlaysRecyclingRecycling
ReclamationReclamationTotal reconstructionTotal reconstruction
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$150k $1M
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Which Rehabilitation Technique?Which Rehabilitation Technique?
Right TreatmentRight TreatmentRight PlaceRight Place
Right TimeRight Time