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NAVFAC ESC - Pavement Research Update FAA Airport Pavement Working Group Meeting April 26, 2012

NAVFAC ESC - Pavement Research Update FAA Airport Pavement Working Group Meeting April 26, 2012. Victor G Cervantes Navy Base Ventura County – Port Hueneme victor.g.cervantes@navy.mil. Outline. Airfield Pavements Group ASR Research In-House Capabilities High Performance

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NAVFAC ESC - Pavement Research Update FAA Airport Pavement Working Group Meeting April 26, 2012

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  1. NAVFAC ESC - Pavement Research UpdateFAA Airport Pavement Working Group MeetingApril 26, 2012 Victor G Cervantes Navy Base Ventura County – Port Hueneme victor.g.cervantes@navy.mil

  2. Outline • Airfield Pavements Group • ASR Research • In-House Capabilities • High Performance • Airfield Pavements (HPAP) • Pavement Design • Concrete Design • Joint Sealants www.jsf.mil

  3. Navy Pavement Evaluation Program • The Navy Pavement Evaluation Team conducts three types of airfield pavement evaluations on every Navy and Marine Corps base: • Condition assessment surveys every 3 years to determine the PCI(Pavement Condition Index) • Structural condition evaluations every 8 to 10 years to determine the PCN (Pavement Classification Number) • Pavement void detections (PVD) every 8 to 10 years • Marine Corp Roads and Parking Lots – (PCI) • These evaluations are used to prioritizemaintenance and repair of all airfield pavements

  4. Alkali-Silica Reaction (ASR) Research • Oregon State University • To better understand, characterize and develop a test method to determine the true Alkali contribution of fly ashes to the pore solution of concrete that may be subject to deleterious ASR • Establishing a connection between field performance and accelerated lab testing • C&CS Atlantic • Currently there is more than one set of guidance to mitigate ASR being used by several agencies which causes confusion to contractors • The goal of this research is to bring those different approaches together to minimize the confusion

  5. Alkali-Silica Reaction (ASR) Research • Clemson University • Characterization of different slag and natural Supplementary Cementitious Materials (SCMs) on their ability to mitigate ASR • Investigate how blending SCMs and Slag can mitigate ASR • Investigate how slag with lithium can mitigate ASR • Develop policy recommendations for the use of slag and other SCMs for ASR mitigation • Focus on the effects of natural pozzolans and their combination with high lime fly ashes on ASR mitigation

  6. In-House Capabilities • Concrete Mix Design and Casting • Aggregate testing • Testing • Baldwin Universal Testing Machines • 120 Kip and 400 Kip • MTS • 100Kip • Aircraft Engine Simulation Facility (AESF) • Reproduces aircraft engine exhaust temperatures and pressures (JSF, F-18 APU, AV-8B, MV-22) in order to see their effect on airfield pavements and matting systems

  7. High Performance Airfield Pavements (HPAP) www.jsf.mil

  8. HPAP- Introduction • The JSF F-35B Short Take Off Vertical Landing (STOVL) airplane will expose airfield pavements to temperatures and pressures not experienced before • Asphalt will melt and conventional concrete will spall creating a FOD potential • Concrete mixes were developed at NAVFAC ESC • Light weight aggregate, Cement, Class F Fly Ash, Fibers • High temperature igneous aggregate, Cement, Class F Fly Ash, Fibers • Continuously Reinforced Concrete Pavement (CRCP) • Center target area

  9. Aviation Engine Simulation Facility - AESF

  10. Temperature Profile Transform vertical landing into horizontal exposure Temperature www.jsf.mil Time Focus on center of test specimens

  11. Test procedure and AESF All FY 2011 JSF concrete test specimens used the water only procedure • Water soaked surface • Exposure in AESF

  12. High Temperature Concrete - HTC • Expanded Slate, Expanded Shale, High Temperature Igneous Aggregate • ASTM C 618 Class F Fly Ash, Multifilament Polypropylene Fibers • Expanded Aggregate needs to meet ASTM C330 • Independent testing needs to be done within 30 days of delivery • Additional requirements in Table 10-1 (ETL 10-4) • Flexural Strength - 650 psi at 56 days • Specified as 550 psi at 28 days

  13. Sample Mix DesignExpanded Shale Material

  14. Joint Sealant JSF Simulated Landing Test Results 25 Cycles 25 Cycles 25 Cycles ONLY 5 Cycles

  15. Results of Phase III JSF VL Simulation Testing

  16. Geometry – Vertical Landing Zone (VLZ)

  17. Eglin AFB 1 4 2 5 3 19 January 2012

  18. Duke Field 4 1 5 2 3 6 19 January 2012

  19. MCAS Yuma 5 3 1 4 6 2 19 January 2012

  20. Acknowledgements • Office of Naval Research • Air Force Civil Engineer Support Agency • Contributors • Javier Malvar, PhD – NAVFAC ESC • John Anderson, PhD – Tigerbrain Engineering, Inc • Peter Bly – ERDC • Jeb Tingle – ERDC • Paul Rossetti – NAVFAC ESC • Justin Foster – NAVFAC ESC • Engineering Technicians • Jesse McNolty, Dave Wilson, Kevin Fitzgerald

  21. THANK YOU FOR YOUR TIME

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