midwestern pavement preservation partnership · 2009-10-01 · midwestern pavement preservation...

Midwestern Pavement Midwestern Pavement Preservation Partnership Preservation Partnership

October 22 October 22 –– 25, 200725, 2007Missoula, Mt.Missoula, Mt.

Asphalt Rejuvenators

A Contractors perspective

Maltene Based Asphalt Rejuvenator

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

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”

Which component changed?

Asphalt CementAsphalt CementStable Stable component:component:

AsphaltenesAsphaltenes

Reactive Reactive components:components:

Saturated Saturated hydrocarbons hydrocarbons (paraffins)(paraffins)First acidaffinsFirst acidaffinsSecond acidaffinsSecond acidaffinsPolar compoundsPolar compounds

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

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

ASPHALT CEMENT EVALUATIONASPHALT CEMENT EVALUATION

Viscosity testingViscosity testing

Penetration number testPenetration number test

When viscosity When viscosity goes upgoes up

Asphalt Cement Asphalt Cement Hardness Hardness

Increases and Increases and Pavement Pavement

Flexibility goes Flexibility goes downdown

Penetration Penetration numbers go downnumbers go down

Asphalt Cement Asphalt Cement Hardness goes upHardness goes up

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.

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.

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.

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

Reactive components deteriorate Reactive components deteriorate causing an imbalance with causing an imbalance with

the asphaltenes. the asphaltenes.

Penetrate Into the Pavement

Maltenes must penetrate into the pavement .

Performance Specifications For

Asphalt Rejuvenators

LajesLajes Field, AzoresField, AzoresPerformance SpecificationsPerformance Specifications

January, 1982January, 1982

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.

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



171710810831.431.4UntreatedUntreated

65655.105.101.971.97TreatedTreated


Binder #1Binder #1

Table ICore Samples

Hillsborough County, FloridaMicro viscosity Test Data

Table ICore Samples

Hillsborough County, Florida

Micro viscosity Test Data



393910.010.05.795.79UntreatedUntreated

72721.881.881.541.54TreatedTreated


Octavia #1Octavia #1

DeSoto County, FloridaOpen Graded Friction Course

FIELD EVALUATIONFIELD EVALUATIONofof

ASPHALT REJUVENATORSASPHALT REJUVENATORSOver TimeOver Time

ClevelandReclamite City of

Evaluation1977/1987

West 110th Street

TreatedTreated After five yearsAfter five years untreated

City of ClevelandReclamite Evaluation

1977/1987West 110th Street

TreatedTreated After ten yearsAfter ten years Untreated

NEW PAVEMENT 1997UN-TREATED

NEW PAVEMENT 1997TREATED WITH RECLAMITE

ASPHALT REJUVENATOR

THIS PHOTO TAKEN AUGUST 2001

*THIS PICTURE TAKEN

SEPTEMBER 2001

NEW PAVEMENT 1997TREATED WITH

RECLAMITEPAVEMENT SEALED

AGAINSTWATER ABSORPTION

NEW PAVEMENT 1997UN-TREATED

PAVEMENT HOLDING WATER

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

Treated

Untreated

Town of Southern Pines, NC

Maltene BasedAsphalt Rejuvenator

Tennessee Department of Transportation Briley Parkway

2003

Shoulder Rejuvenation

JOINTBONDLongitudinal Joint Stabilization

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.

JOINTBOND JOINTBOND Being Applied To The Being Applied To The Longitudinal JointsLongitudinal Joints

®

WithWith JOINTBONDJOINTBOND ,, Striping is Not Striping is Not Obliterated!Obliterated!

®

JOINTBONDJOINTBOND®®

after after three years three years

in in TDOT trial.TDOT trial.

Does it work?Does it work?

NOT

TREATED

“Untreated joints are beginning to

crack and separate after three years”

TDOT

Not Treated

““Untreated VUntreated V’’s Treateds Treated””

Treated with JOINTBOND®

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

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

Porous Friction Course

“Prediction is very hard, especially whenit’s about the future”

-Yogi Berra.

AASHTO Nat ional Init iat ive MANAGEMENTMANAGEMENT

ASSETASSET

Future

Questions Questions oror

Comments?Comments?

800-333-630934 Years Of Service

To Public Works

midwestern pavement preservation partnership · 2009-10-01 · midwestern pavement preservation...

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