s7_fhwa perspective on warm mix asphalt_ltc2013

8/23/2019 S7_FHWA Perspective on Warm Mix Asphalt_LTC2013

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Warm Mix Asphalt

Technologies

Federal Highway Administration

Office of Pavement Technology

Washington DC, USA

Matthew Corrigan, P.E.Asphalt Pavement Engineer

National Initiatives


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Moving Ahead for Progress in the

21st Century Actwww.fhwa.dot.gov/map21/

Provides an array of provisions designed toincrease innovation and improve efficiency,effectiveness, and accountability in the planning,design, engineering, construction and financing oftransportation projects.

Building on FHWAs Every Day Counts initiative,MAP-21 changes will speed up the projectdelivery process, saving time and money forindividuals and businesses, and yielding broad

benefits nationwide.
http://www.fhwa.dot.gov/map21/http://www.fhwa.dot.gov/map21/


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Research, Technology Deployment,

Training & Education

Highway Research & Development - $115.0 million*

Technology & Innovation Deployment - $62.5 million*

Training & Education - $24.0 million*

ITS Program - $100.0 million*

University Transportation Centers - $72.5 million*

Bureau of Transportation Statistics - $26.0 million* SHRP 2 implementation (funded as set aside of State

Planning and Research funds) - $TBD

*Annual $ Funding Levels


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Accelerates project delivery and promotes innovation.

Technology Innovation and Deployment Program $62.5 M per fiscal year (2013-14)

SHRP2 Implementation

Every Day Counts initiatives Demonstrations

Pilots and Testing

Accelerated Innovation DeploymentAt least $12 million per year of these funds must be used

to accelerate the deployment and implementation of

pavement technology.

www.fhwa.dot.gov/map21/tid.cfm
http://www.fhwa.dot.gov/map21/tid.cfmhttp://www.fhwa.dot.gov/map21/tid.cfm


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Accelerating Technology Deployment

The Every Day Counts Initiative

Every Day Counts is NOT about inventing the next "bigthing". It is about taking effective, proven and market-

ready technologies and getting them into widespread

use. By advancing 21st century solutions, we can improve

safety, reduce congestion and keep America moving andcompetitive.
http://www.fhwa.dot.gov/everydaycounts/


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Every Day Counts


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Every Day Counts 7

7


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The Every Day Counts Initiative

Warm Mix Asphalt (WMA)

www.fhwa.dot.gov/everydaycounts

Accelerating Technology Deployment


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1. By December 2011, 40 State DOTs and all Federal

Lands Highway Divisions will have a specification

&/or contractual language that allows WMA onFederal-aid or Federal Lands projects.

40 States + all FLHD (Complete)

2. By December 2012, at least 30 State DOTs willhave achieved set targets for WMA usage.

18 Total with set usage goals (as of Fall 2012)

Performance Metrics


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We saved over 30 million gallons offuel during production

We reduced CO2e by 800,000 tons Equivalent to taking 150,000 vehicles

off the road!

If used 100% WMA 10 x

In 2010, use of WMA estimated:


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General Technology CategoriesMaterial Processing

Ex. LEA (Hot Coated Coarse Agg + Moist Fine Agg + Additives)

Organic Additives

Waxes, Hydrocarbon Based Products

Chemical Additives

Surfactants

Foaming Processing

Water Injection, Zeolites

Hybrid Systems

example: H20 + Surfactant


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TechnologyOverview**

**Federal Highway Administration does not endorse or promote any particular proprietary product or technology.

Many US technologies web-linked at:

http://warmmixasphalt.com/wmatechnologies.aspx

This listing does NOT constitute an

endorsement or approval.
http://warmmixasphalt.com/Default.aspx


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StakeholderEngagement:

WMATechnicalWorkingGroupFHWA

NAPA

Industry

State DOT

State APANCAT

AASHTO

Labor

NIOSH

Co-Chairs:

Matthew Corrigan

Ron White

Established in 2005Adjourned in 2012
http://warmmixasphalt.com/Default.aspx


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FHWA Commitment to Stakeholder Engagement

in the Pavement & Materials ProgramAsphalt

Pavements

Mixture ETG

WMA

Task Group

RAP/RASTask Group

PerformanceTesters TG

ConstructionTask Group

Binder ETG

MSCR

Task Group

LinearAmplitudeSweep TG

GTRTask Group

Others asNeeded

Models ETGSustainability

ETG

Concrete

Pavements

Executive ETG Engineer ETG

Roadmap

Track Team

RoadmapTrack Team

RoadmapTrack Team

14

PavementPreservation

ETG

RPUGSurface

Characteristics

AASHTO JTP

DGIT

AASHTO

Subcommittees

MaterialsMaintenanceConstruction

IRI ETG


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9-43 $522,501 completed

9-47 $79,000 completed9-47A $1,121,000 Jan 2013

9-49 $450,000 Jun 2013

9-49A $900,000 Jul 20169-52 $800,000 Dec 2014

9-53 $700,000 Sept 2014

9-54 $800,000 begin 2013

9-55 $600,000 begin 2013

20-07 (311) $50,000 completed

Total $6,022,501

NCHRP Projects funded as a result of WMA TWG efforts:

--Mix Design Practices for WMA

--Engineering Properties, Emissions, andField Performance of WMA Technologies

--Properties and Performance of WMA

Technologies

--Performance of WMA Technologies:

Stage I--Moisture Susceptibility--Performance of WMA Technologies:

Stage II--Long-Term Field Performance--Short-Term Laboratory Conditioning of

Asphalt Mixtures

--Properties of Foamed Asphalt for Warm

Mix Asphalt Applications

--Long-Term Aging of Asphalt Mixtures for

Performance Testing and Prediction

--Recycled Asphalt Shingles in Asphalt

Mixtures with WMA Technologies

--Development of a WMA

Tech. Evaluation Program


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NCHRP 9-43 Mix Design Practices for WarmMix Asphalt $500,000

NationalResearchInitiatives
http://www.trb.org/default.asp


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Products:

Appendix to AASHTO R35 with commentary SpecialMixture Design Considerations and Methods for Warm

Mix Asphalt (WMA)

WMA Mix Design Workshop/Training Module

Being converted to web based training thru NHI

Chapter on WMA Mix Design for the NCHRP Project

09-33 Mix Design Manual

Standard Practice For Measuring Properties of WarmMix Asphalt (WMA) for Performance Analysis Using the

AASHTO MEPDG (AASHTO DARWin-ME Software)

NCHRPProject09-43


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Resourcewww.ct.gov/dot/AASHTO-R35


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19

Course Number:

FHWA-NHI-131137


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Appendix to AASHTO R35 with commentary Special

Mixture Design Considerations and Methods for

Warm Mix Asphalt (WMA)

Approved by AASHTO

Subcommittee on Materials

and published:Standard Specifications for

Transportation Materials and

Methods of Sampling andTesting (32nd Edition, 2012)


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HMA

330F

WMA

240F

Mix Design Considerations

i ll il bl b i i


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CommerciallyAvailableLaboratoryFoamingDevices

InstroTek, Inc. AccuFoamer

PTi THE FOAMER

Wirtgen, WLB 10 S


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NCHRP 20-07/ Task 311, Development of a

Warm Mix Asphalt Technology Evaluation

Program (complete)

Myers McCarthy Consulting Engineers, LLC

http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.

asp?ProjectID=3075

AASHTO NTPEP Panel has been established toreview findings: www.ntpep.org

POC: Tom Baker, Washington State DOT
http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3075http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3075http://www.ntpep.org/http://www.ntpep.org/http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3075http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3075http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3075


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Warm-Mix Asphalt:

Best Practices, 3nd Edition Stockpile Moisture Management

Burner Adjustments and

Efficiency

Aggregate Drying and BaghouseTemperatures

Drum Slope and Flighting

Combustion Air

RAP usage Placement Changes

Quality Improvement Series 125


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State DOT WMA Usage - 2006

VI

VT

RI

MANH

CT

NJ

DE

MD

DC

CA

AZ

CO

NM

TX

OKAR

LA

MOKY

ALGA

FL

VA

OH

MI

AK

MT

NV

Guam

ME

WA

OR

UT

KS

IDWY

ND

SD

MN

NE

WI

IA

ILIN

MS

TN

SC

NC

WV

PA

NY

PR

HI

Mobile Asphalt Testing Laboratory ProgramWMA Project Locations


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State DOT WMA Usage - 2012

VI

VT

RI

MANH

CT

NJ

DE

MD

DC

495

CA

AZ

CO

NM

TX

OKAR

LA

MOKY

ALGA

FL

VA

OH

MI

AK

MT

NV

Guam

ME

WA

OR

UT

KS

IDWY

ND

SD

MN

NE

WI

IA

ILIN

MS

TN

SC

NC

WV

PA

NY

PR

HI

Mobile Asphalt Testing Laboratory ProgramWMA Project Locations


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CT

NJDE

MD

DC

78

I-WMA

495

CA

AZ

CO

NM

TX

OKAR

LA

MOKY

ALGA

FL

VA

OH

MI

VTAK

VI

MT

NV

ME

WA

OR

UT

KS

IDWY

ND

SD

MN

NE

WI

IA

IL IN

MS

TN

SC

NC

WV

PA

NY MANH

PR

RI

90

70

35

10

37

30

40

820

75

5

75

55

94MnROAD

495

70

65465

15

90

8781

86

95

10 295

VT

VI

MANH

RI

295

Interstate Highway WMA Usage

HI

Guam

66

81

/


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WMA Usage in HMA/WMA

16.8

million

tons

41.1

million

tons

0%

5%

10%

15%

20%

25%

2009 2010 2011 2012

5%11%

19%

68.7

million

tons

data

being

collected

Percentage ofTotalMix Production in USA

2006WMA trials

begin

Source: draft NAPA annual survey presented during Feb. 2013 NAPA Annual Meeting

358.4 359.8 366.0Total HMA/WMA mix:(million tons)

b h l


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Organic Additive

Additive Foaming

Chemical Additive

Plant Foaming

0

20

40

60

80

100

20092010

2011


WMA Usage by TechnologyPercentof market for WMA production in USA

RAS U i HMA/WMA


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RAS Usage in HMA/WMA

701

thousand

tons

1,099

thousand

tons

0

200

400

600

8001,000

1,200

1,400

1,600

2009 2010 2011 20121,192

thousand

tons

data

being

collected


Total asphalt mix: 358.4 359.8 366.0(million tons)

TotalRAS tons used for mix production in USA

RAP U i HMA/WMA


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RAP Usage in HMA/WMA

67.2

million

tons

73.5

million

tons

0%

5%

10%

15%

20%

25%

2009 2010 2011 2012

19% 20% 22%

79.1

million

tons

data

being

collected

Percentage ofTotalMix Production in USA


Total HMA/WMA mix: 358.4 359.8 366.0(million tons)


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NCHRP 9-54: Long-Term Aging of Asphalt Mixtures forPerformance Testing and Prediction

http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp

?ProjectID=3400

RFP close date: 10/18/2012

http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp

?ProjectID=3401

RFP close date: 11/14/2012

NCHRP 9-55: Recycled Asphalt Shingles in Asphalt

Mixtures with WMA Technologies

http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3400http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3400http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3401http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3401http://www.trb.org/default.asphttp://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3401http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3401http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3400http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3400http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3400


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Research Needs Statement for

proposed 2014 NCHRP 09-xx project:

Recycling Agents Used For Asphalt

Mixtures Containing High Recycled

Asphalt Binder Ratios

http://www.trb.org/default.asp


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Items for continued involvement:

Standardize reheating procedure for WMA

mixtures for volumetric and performance tests?

Use of RAS, RAP, GTR, alternate binders, and

combinations used with WMA technologies?

Low temperature applications w/ high percentages?

Rejuvenating agents marketed as WMA?

Use of WMA to remove SMA fiber requirements?

Incentives and motivation for improved density?

Increased density requirements on WMA?


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Conditioning for WMA performance testing?

Need for WMA specific mix design? (AASHTO R-35)

Incorporate impact of aggregate absorption?

Short term and long term?

Need for laboratory foaming equipment?

Evaluation of asphalt foam characteristics? Are unique foam properties provided or simply

volume expansion & improved coating?

Local agency WMA acceptance

and training?

Items for continued involvement:


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Every Day Counts 36


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Every Day Counts 37


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Every Day Counts 38


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Thank You!

Matthew Corrigan, P.E.Asphalt Pavement Engineer

hi C

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