Warm Mix Asphalt Technologies

Transcription

1 Matthew Corrigan, P.E. Asphalt Pavement Engineer Warm Mix Asphalt Technologies National Initiatives Federal Highway Administration Office of Pavement Technology Washington DC, USA

2 Moving Ahead for Progress in the 21 st Century Act Provides an array of provisions designed to increase innovation and improve efficiency, effectiveness, and accountability in the planning, design, engineering, construction and financing of transportation projects. Building on FHWA s Every Day Counts initiative, MAP-21 changes will speed up the project delivery process, saving time and money for individuals and businesses, and yielding broad benefits nationwide.

3 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

4 Accelerates project delivery and promotes innovation. Technology Innovation and Deployment Program $62.5 M per fiscal year ( ) SHRP2 Implementation Every Day Counts initiatives Demonstrations Pilots and Testing Accelerated Innovation Deployment At least $12 million per year of these funds must be used to accelerate the deployment and implementation of pavement technology.

5 The Every Day Counts Initiative Accelerating Technology Deployment Every Day Counts is NOT about inventing the next "big thing". It is about taking effective, proven and marketready technologies and getting them into widespread use. By advancing 21 st century solutions, we can improve safety, reduce congestion and keep America moving and competitive.

6 Every Day Counts

7 Every Day Counts 7 7

8 The Every Day Counts Initiative Accelerating Technology Deployment Warm Mix Asphalt (WMA)

9 Performance Metrics 1. By December 2011, 40 State DOTs and all Federal Lands Highway Divisions will have a specification &/or contractual language that allows WMA on Federal-aid or Federal Lands projects. 40 States + all FLHD (Complete) 2. By December 2012, at least 30 State DOTs will have achieved set targets for WMA usage. 18 Total with set usage goals (as of Fall 2012)

10 In 2010, use of WMA estimated: We saved over 30 million gallons of fuel during production We reduced CO 2 e by 800,000 tons Equivalent to taking 150,000 vehicles off the road! If used 100% WMA 10 x

11 General Technology Categories Material 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: H Surfactant

12 Technology Overview** Many US technologies web-linked at: This listing does NOT constitute an endorsement or approval. **Federal Highway Administration does not endorse or promote any particular proprietary product or technology.

13 Stakeholder Engagement: WMA Technical Working Group Established in 2005 Adjourned in 2012 Co-Chairs: Matthew Corrigan Group (TWG) NIOSH FHWA NAPA Labor Industry Ron White AASHTO State DOT NCAT State APA

14 FHWA Commitment to Stakeholder Engagement in the Pavement & Materials Program Asphalt Pavements Concrete Pavements Mixture ETG Binder ETG Models ETG Sustainability ETG Executive ETG Engineer ETG WMA Task Group RAP/RAS Task Group Performance Testers TG MSCR Task Group Linear Amplitude Sweep TG GTR Task Group Pavement Preservation ETG Construction AASHTO Subcommittees Maintenance RPUG Surface Characteristics IRI ETG Materials Roadmap Track Team Roadmap Track Team Roadmap Track Team Construction Task Group Others as Needed AASHTO JTP DGIT 14

15 NCHRP Projects funded as a result of WMA TWG efforts: Mix Design Practices for WMA $522,501 completed --Engineering Properties, Emissions, and 9-47 Field Performance of WMA Technologies $79,000 completed --Properties and Performance of WMA 9-47A $1,121,000 Jan 2013 Technologies --Performance of WMA Technologies: 9-49 $450,000 Jun 2013 Stage I--Moisture Susceptibility --Performance of WMA Technologies: 9-49A Stage II--Long-Term Field Performance $900,000 Jul Short-Term Laboratory Conditioning of 9-52 Asphalt Mixtures $800,000 Dec Properties of Foamed Asphalt for Warm 9-53 Mix Asphalt Applications $700,000 Sept Long-Term Aging of Asphalt Mixtures for 9-54 $800,000 begin 2013 Performance Testing and Prediction --Recycled Asphalt Shingles in Asphalt 9-55 $600,000 begin 2013 Mixtures with WMA Technologies --Development of a WMA (311) Tech. Evaluation Program $50,000 completed Total $6,022,501

16 National Research Initiatives NCHRP 9-43 Mix Design Practices for Warm Mix Asphalt $500,000

17 Products: NCHRP Project Appendix to AASHTO R35 with commentary Special Mixture 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 Mix Design Manual Standard Practice For Measuring Properties of Warm Mix Asphalt (WMA) for Performance Analysis Using the AASHTO MEPDG (AASHTO DARWin-ME Software)

18 Resource

19 Course Number: FHWA-NHI

20 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 and Testing (32nd Edition, 2012)

21 Mix Design Considerations WMA 240 F HMA 330 F

22 Commercially Available Laboratory Foaming Devices Wirtgen, WLB 10 S PTi THE FOAMER InstroTek, Inc. AccuFoamer

23 NCHRP 20-07/ Task 311, Development of a Warm Mix Asphalt Technology Evaluation Program (complete) Myers McCarthy Consulting Engineers, LLC asp?projectid=3075 AASHTO NTPEP Panel has been established to review findings: POC: Tom Baker, Washington State DOT

24 Warm-Mix Asphalt: Best Practices, 3 nd Edition Stockpile Moisture Management Burner Adjustments and Efficiency Aggregate Drying and Baghouse Temperatures Drum Slope and Flighting Combustion Air RAP usage Placement Changes Quality Improvement Series 125

25 State DOT WMA Usage AK WA OR ID MT WY ND SD MN WI MI VT NY ME NH MA RI CA NV UT CO NE KS IA MO IL IN KY OH PA WV VA CT NJ DE MD Guam AZ NM OK AR TN SC NC DC HI TX LA MS AL GA VI FL PR Mobile Asphalt Testing Laboratory Program WMA Project Locations

26 State DOT WMA Usage AK Guam HI CA WA OR NV ID UT AZ MT WY CO NM ND SD NE KS OK TX MN WI IA IL MO AR MS LA MI IN KY TN AL OH GA PA WV VA NC SC 495 VT NY ME CT NJ DE MD DC NH MA RI VI FL PR Mobile Asphalt Testing Laboratory Program WMA Project Locations

27 CT NJ DE MD DC 78 I-WMA 495 CA AZ CO NM TX OK AR LA MO KY AL GA FL VA OH MI VT AK VI MT NV ME WA OR UT KS ID WY ND SD MN NE WI IA IL IN MS TN SC NC WV PA NY MA NH PR RI MnROAD VT VI MA NH RI 295 Interstate Highway WMA Usage HI Guam 66 81

28 Source: draft NAPA annual survey presented during Feb NAPA Annual Meeting WMA Usage in HMA/WMA Percentage of Total Mix Production in USA Total HMA/WMA mix: (million tons) 25% 20% % 10% 5% 0% 2006 WMA trials begin 5% million tons 11% 41.1 million tons 19% 68.7 million tons data being collected

29 Source: draft NAPA annual survey presented during Feb NAPA Annual Meeting WMA Usage by Technology Percent of market for WMA production in USA Plant Foaming Chemical Additive Additive Foaming Organic Additive

30 Source: draft NAPA annual survey presented during Feb NAPA Annual Meeting RAS Usage in HMA/WMA Total RAS tons used for mix production in USA Total asphalt mix: (million tons) ,600 1,400 1,200 1, thousand tons 1,099 thousand tons 1,192 thousand tons data being collected

31 Source: draft NAPA annual survey presented during Feb NAPA Annual Meeting RAP Usage in HMA/WMA Percentage of Total Mix Production in USA Total HMA/WMA mix: (million tons) % 20% 15% 10% 19% 20% 22% 5% 0% million tons 73.5 million tons 79.1 million tons data being collected

32 National Research Initiatives NCHRP 9-54: Long-Term Aging of Asphalt Mixtures for Performance Testing and Prediction RFP close date: 10/18/2012 NCHRP 9-55: Recycled Asphalt Shingles in Asphalt Mixtures with WMA Technologies RFP close date: 11/14/2012

33 National Research Initiatives Research Needs Statement for proposed 2014 NCHRP 09-xx project: Recycling Agents Used For Asphalt Mixtures Containing High Recycled Asphalt Binder Ratios

34 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?

35 Items for continued involvement: 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?

36 Every Day Counts 36

37 Every Day Counts 37

38 Every Day Counts 38

39 Thank You! Matthew Corrigan, P.E. Asphalt Pavement Engineer FHWA - Washington D.C.