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New Technologies Land on Airport Pavements

New Technologies Land on Airport Pavements. Rocky Mountain Asphalt Conference February 18-20, 2009. AAPTP Background. Cooperative Agreement FAA & AU Created in 2004 $2million/year $1.6 million for 3 year obtained Organized similar to TRB NCHRP 19 Projects funded

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New Technologies Land on Airport Pavements

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  1. New Technologies Land on Airport Pavements Rocky Mountain Asphalt Conference February 18-20, 2009

  2. AAPTP Background • Cooperative Agreement FAA & AU • Created in 2004 $2million/year • $1.6 million for 3 year obtained • Organized similar to TRB NCHRP • 19 Projects funded • Future dependent upon New FAA Legislation in Congress

  3. Obstacles for Technology • Lack of experience with technology • Aversion to risk • Differences between airport and highways • FAA lack of encouragement

  4. Technologies Introduced • PG Binder Grading (04-02) • Superpave (04-03) • SMA (04-04) • Guidelines for Rubblization (04-01) • Longitudinal Joints (04-05)

  5. Projects of Interest • HMA Airport Construction Best Practice Manual (05-01) • Techniques for Mitigation of Reflective Cracking (05-04) • Use of RAP in Airport Pavements (05-06)

  6. Projects Underway • Life Cycle Cost Analysis For Airfield Pavements (06-06) • Non Coal Tar Based Fuel Resistant Sealers and Binders (05-02) • Techniques for Prevention and Remediation of Non-load Related Distresses (05-07 & 06-01) • Effect of De-icing Chemical on HMA Airfield Pavements (05-02)

  7. Projects Underway (Cont.) • Non-destructive Testing to Identify Presence and Extent of Delamination of HMA Airfield Pavements (06-04) • Use of Recycled ASR PCC Materials in HMA (06-02) • Guidelines for Use of State DOT Specs (06-05) • Performance Base Specs for Airfields (06-3) • Assessment of Existing Overlay Design Procedures for Airfield Pavements (06-07)

  8. Project 04-02 PG Binder Selection • Change from highways to airfield • Considerations for airfield use • Gross vehicle weights • Number of loads • Speed of Loadings • Wander • Use of pavement facility • Availability of required asphalt grade

  9. PG Binder Selection Background • PG System Design based upon highway traffic and expected temperatures at the pavement site • Grades based upon same performance measurement at different temperatures • PG 64-22 represents a binder that provides satisfactory performance at a high temperature of 64 C and at a low temperature of -22C

  10. LTPPBind Software

  11. PG Binder Selection Procedure • Convert aircraft weights into Equivalent Highway loads (EHE) • Select base temperature from LTPPBind 3.1 • Adjust for traffic and pavement location on facility • Check for availability within US

  12. Convert Aircraft to EHE

  13. PG Adjustments *Polymer modified binders must have a minimum elastic recovery value of 60 % at 25 C, following procedures described in AASHTO 301.

  14. Check for Availability

  15. Questions? www.AAPTP.US

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