midwestern pavement preservation partnership · 2009-10-01 · midwestern pavement preservation...
TRANSCRIPT
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Midwestern Pavement Midwestern Pavement Preservation Partnership Preservation Partnership
October 22 October 22 –– 25, 200725, 2007Missoula, Mt.Missoula, Mt.
Asphalt Rejuvenators
A Contractors perspective
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Maltene Based Asphalt Rejuvenator
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WHAT IS AN ASPHALT REJUVENATOR?WHAT IS AN ASPHALT REJUVENATOR?
Asphalt consists of two main fractions:
“asphaltenes”which arethe hard brittle component, insoluble and not affected by oxidation and the highly reactive sub-fractions:
“maltenes” These maltenes are oily and resinous in appearance
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The Age Of A Pavement Is Not The Primary FactorIn Choosing Candidates For A Rejuvenator Application
The Primary Importance Is The ConditionOf The Pavement
“Right Treatment Right Pavement Right Time”
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Which component changed?
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Asphalt CementAsphalt CementStable Stable component:component:
AsphaltenesAsphaltenes
Reactive Reactive components:components:
Saturated Saturated hydrocarbons hydrocarbons (paraffins)(paraffins)First acidaffinsFirst acidaffinsSecond acidaffinsSecond acidaffinsPolar compoundsPolar compounds
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Chemical Composition of Asphalt Chemical Composition of Asphalt CementCement
Asphalt cement consists of five component groups:
Asphaltenes(A), the bodying agent gives asphalt its black color, is hard and brittle like pencil lead.
Maltenes, which provide the cohesive and flexible qualities of the asphalt cement. They are categorized as:
•Polar compounds or Nitrogen bases (N)- components of highly reactive resins, which act as a peptizer for the asphaltenes.•First acidiffins (A1)- components of resinous hydrocarbons which function as a solvent for the peptized asphaltenes.•Second acidiffins (A2)- components of slightly unsaturated hydrocarbons that also serve as a solvent for the peptized asphaltenes.• Paraffins (P) – saturated hydrocarbons, which function as a gelling agent for the asphalt components
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Asphalt Components Asphalt Components RelationshipRelationship
AA--combined withcombined with--NN--allowsallows--AA11--,A,A22 --andand--PP--to mix withto mix with--ANAN--holdingholding--AA--in solution as long as balanced ratios ofin solution as long as balanced ratios of--
AA--toto--NN--andand--NN--toto--PP--are maintained are maintained
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ASPHALT CEMENT EVALUATIONASPHALT CEMENT EVALUATION
Viscosity testingViscosity testing
Penetration number testPenetration number test
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When viscosity When viscosity goes upgoes up
Asphalt Cement Asphalt Cement Hardness Hardness
Increases and Increases and Pavement Pavement
Flexibility goes Flexibility goes downdown
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Penetration Penetration numbers go downnumbers go down
Asphalt Cement Asphalt Cement Hardness goes upHardness goes up
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From the moment an asphalt pavement From the moment an asphalt pavement is created at a central mixing plant is created at a central mixing plant ----deterioration of the deterioration of the ““GLUEGLUE”” begins.begins.
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This is due to the high heat environment necessary to blend asphalt cement with
stone and get it to the job site in a pliable state.
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DeteriorationDeterioration
Substantial chemical changes such as a decrease in penetration number and an increase in viscosity (embrittlement) of the asphalt cement take place during this short mixing period primarily due to the high heat environment.
The penetration number The penetration number ((softnesssoftness) of the asphalt ) of the asphalt
cement after the mixing cycle cement after the mixing cycle is only 60% to 75% is only 60% to 75% of its original value.of its original value.
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Deterioration continues once Deterioration continues once the asphalt mixture is placed on the asphalt mixture is placed on
a roadway from:a roadway from:
Environmental Environmental temperaturetemperatureOxidationOxidationStripping action of Stripping action of storm water and storm water and melting snowmelting snowTraffic wearTraffic wear
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Reactive components deteriorate Reactive components deteriorate causing an imbalance with causing an imbalance with
the asphaltenes. the asphaltenes.
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Penetrate Into the Pavement
Maltenes must penetrate into the pavement .
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Performance Specifications For
Asphalt Rejuvenators
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LajesLajes Field, AzoresField, AzoresPerformance SpecificationsPerformance Specifications
January, 1982January, 1982
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Asphalt Pavement And Recycling Technologies, Inc. (APART)5207 Minter Field Avenue Shafter, CA 93306Telephone: 661-393-2748 Fax: 661-393-2804
Report: 04-0423April 30, 2004Customer: Pavement Technology, Inc. – Colin DuranteProject:Reclamite® rejuvenation of various pavements in Hillsboro County, Florida.
Samples were identified as:Ridgebrook #1 – Treated Ridgebrook #2 – TreatedRidgebrook #1 – Untreated Ridgebrook #2 – UntreatedBinder #1 – Treated Binder #2 – TreatedBinder #1 – Untreated Binder #2 – UntreatedOctavia #1 – Treated Octavia #2 – TreatedOctavia #1 – Untreated Octavia #2 – Untreated
Requested Testing:Determine the viscosity and penetration of the asphalt binder obtained from the top 3-8-inch of the submitted core samples to determine the affect of the Reclamite® treatment.
Summary of Testing:The cores identified as #1 treated and untreated from each pavement were subjected to testing. The asphalt binder was extracted from the top 3/8-inch of each core and recovered for testing. Viscosities were determined by sliding-plate viscometer. Penetrations were calculated from a nomograph. Test data are reported by Table I.
Test data reported herein has been secured by reliable testing pTest data reported herein has been secured by reliable testing procedures. As we have no knowledge of, or control over the condrocedures. As we have no knowledge of, or control over the conditions that may affect the use of material from which samples weitions that may affect the use of material from which samples were taken, we re taken, we assume no responsibility in furnishing this data other than to wassume no responsibility in furnishing this data other than to warrant that they represent reliable measurements of the propertiarrant that they represent reliable measurements of the properties of the sample (s) received and tested. No warranties, expresses of the sample (s) received and tested. No warranties, expressed or implied, ed or implied, including warranties of merchantability or fitness for a particuincluding warranties of merchantability or fitness for a particular use, are made with respect to the products described herein.lar use, are made with respect to the products described herein. Nothing contained herein shall constitute a permission or recoNothing contained herein shall constitute a permission or recommendation to mmendation to practice any invention covered by a patent without license from practice any invention covered by a patent without license from the owner of the patent.the owner of the patent.
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Table ICore Samples
Hillsborough County, FloridaMicro viscosity Test Data
8822602260170170UntreatedUntreated
131352052060.560.5TreatedTreated
Top 3/8Top 3/8--inchinch
Ridgebrook #1Ridgebrook #1
PenetrationPenetration0.001 sec0.001 sec--110.05 sec0.05 sec--11Sample IdentificationSample Identification
EquivalentEquivalentMicro viscosity, 25Micro viscosity, 25ººC, MPC, MP
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PenetrationPenetration0.001 sec0.001 sec--110.05 sec0.05 sec--11Sample IdentificationSample Identification
EquivalentEquivalentMicro viscosity, 25Micro viscosity, 25ººC, MPC, MP
171710810831.431.4UntreatedUntreated
65655.105.101.971.97TreatedTreated
Top 3/8Top 3/8--inchinch
Binder #1Binder #1
Table ICore Samples
Hillsborough County, FloridaMicro viscosity Test Data
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Table ICore Samples
Hillsborough County, Florida
Micro viscosity Test Data
PenetrationPenetration0.001 sec0.001 sec--110.05 sec0.05 sec--11Sample IdentificationSample Identification
EquivalentEquivalentMicro viscosity, 25Micro viscosity, 25ººC, MPC, MP
393910.010.05.795.79UntreatedUntreated
72721.881.881.541.54TreatedTreated
Top 3/8Top 3/8--inchinch
Octavia #1Octavia #1
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DeSoto County, FloridaOpen Graded Friction Course
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FIELD EVALUATIONFIELD EVALUATIONofof
ASPHALT REJUVENATORSASPHALT REJUVENATORSOver TimeOver Time
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ClevelandReclamite City of
Evaluation1977/1987
West 110th Street
TreatedTreated After five yearsAfter five years untreated
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City of ClevelandReclamite Evaluation
1977/1987West 110th Street
TreatedTreated After ten yearsAfter ten years Untreated
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NEW PAVEMENT 1997UN-TREATED
NEW PAVEMENT 1997TREATED WITH RECLAMITE
ASPHALT REJUVENATOR
THIS PHOTO TAKEN AUGUST 2001
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*THIS PICTURE TAKEN
SEPTEMBER 2001
NEW PAVEMENT 1997TREATED WITH
RECLAMITEPAVEMENT SEALED
AGAINSTWATER ABSORPTION
NEW PAVEMENT 1997UN-TREATED
PAVEMENT HOLDING WATER
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NEW PAVEMENT 1997UN-TREATEDPAVEMENT
HOLDING WATER
NEW PAVEMENT 1997UN-TREATEDPAVEMENT
HOLDING WATERNEW PAVEMENT 1997
TREATED WITHRECLAMITEASPHALT
REJUVENATORPAVEMENT SEALED
AGAINST WATER ABSORPTION
NEW PAVEMENT 1997TREATED WITH
RECLAMITEASPHALT
REJUVENATORPAVEMENT SEALED
AGAINST WATER ABSORPTION
THIS CLOSE UP PICTURE TAKENSEPTEMBER 2001
THIS CLOSE UP PICTURE TAKENSEPTEMBER 2001
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Treated
Untreated
Town of Southern Pines, NC
Maltene BasedAsphalt Rejuvenator
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Tennessee Department of Transportation Briley Parkway
2003
Shoulder Rejuvenation
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JOINTBONDLongitudinal Joint Stabilization
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The weakest part of a new asphalt pavement The weakest part of a new asphalt pavement is the longitudinal construction joint between is the longitudinal construction joint between paving machine passes.paving machine passes.
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JOINTBOND JOINTBOND Being Applied To The Being Applied To The Longitudinal JointsLongitudinal Joints
®
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WithWith JOINTBONDJOINTBOND ,, Striping is Not Striping is Not Obliterated!Obliterated!
®
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JOINTBONDJOINTBOND®®
after after three years three years
in in TDOT trial.TDOT trial.
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Does it work?Does it work?
NOT
TREATED
“Untreated joints are beginning to
crack and separate after three years”
TDOT
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Not Treated
““Untreated VUntreated V’’s Treateds Treated””
Treated with JOINTBOND®
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Asphalt Pavement And Recycling Technologies, Inc. (APART)5207 Minter Field Avenue
Shafter, CA 93263Telephone: 661-393-2748
Fax: 661-393-2804E-mail: [email protected]: 07-0406
April 21, 2007Customer: Pavement Technology, Inc. – Colin DuranteProject: JOINTBOND Treatment-Whispering Hills Drive, Nashville, TN Samples Submitted:Four pavement samples, 4” cores, were received. Samples were labeled as: # 1: JOINTBOND Treated (3/15/07) # 2: JOINTBOND Untreated (3/15/07)# 3: JOINTBOND Treated (3/15/07) # 4: JOINTBOND Untreated (3/15/07)Requested Testing:Determine the viscosity at 60ºC, Pa*s, phase angle, complex, elastic and viscous moduli of the asphalt binder obtained from the top 3-8-inch and 3/8-inch to 3/4-inch layer of the submitted core samples to determine the affect of the JOINTBOND treatment.Summary of Testing:The top 3/8” and the 3/8”-3/4” layers of each core specimen were removed separately. The asphalt binder was extracted and recovered from both layers separately by California Test Method 365. Viscosities, Pa*s, phase angle, complex, elastic, and viscous moduli were determined on the recovered asphalt binder using the Dynamic Shear Rheometer as prescribed AASHTO T316 at 60ºC. See Table 1 for test results:Conclusion:Reported data are based on the testing of limited samples submitted as being representative of the treated and untreated pavement.
Steven Escobar
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1126918621142280.611213/8”-3/4”
1558338531602376.11573Top 3/8”
# 4. Untreated
93331987954378.0936.63/8”-3/4”
83541531849779.6833.5Top 3/8”
# 3. Treated
89502160920876.4903.63/8”-3/4”
1430638381481175.01454Top 3/8”
# 2. Untreated
93952285966976.3948.93/8”-3/4”
87472017897777.0881.0Top 3/8”
# 1. Treated
ViscousElasticComplex
M O D U L U S, PaPhase Angle, ºViscosity@60ºC, Pa*sCore Sample
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Porous Friction Course
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“Prediction is very hard, especially whenit’s about the future”
-Yogi Berra.
AASHTO Nat ional Init iat ive MANAGEMENTMANAGEMENT
ASSETASSET
Future
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Questions Questions oror
Comments?Comments?
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800-333-630934 Years Of Service
To Public Works