NCAT Pavement Test Track · 2015-05-21 · APAI – 12/2/08 2012 Track • Green Group (GG) study...
Transcript of NCAT Pavement Test Track · 2015-05-21 · APAI – 12/2/08 2012 Track • Green Group (GG) study...
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Preservation Update
NCAT Pavement Test Track
10 million ESALs
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Private Sector Sponsors Cargill Deicing Technology FP2 Kraton Polymers Modified Asphalt Solutions Oldcastle Materials Polycon Manufacturing Seneca Petroleum Shell Sulfur Solutions Trinidad Lake Asphalt
FHWA
Pre-2012, 2012, 2015
Track Research Sponsors
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Content
• NCAT Pavement Test Track • Lee Road 159 • 2015 research cycle (US-280)
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APAI – 12/2/08
2012 Track
• Green Group (GG) study • 100% RAP CCPR base mix (+FDR) • Surface crack prevention • Crack and rut resistant thin overlays • Perpetual pavement design • HiMA for new/rehab pavements • Preservation Group (PG) study.
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APAI – 12/2/08
2012 Track
• Green Group (GG) study • 100% RAP CCPR base mix (+FDR) • Surface crack prevention • Crack and rut resistant thin overlays • Perpetual pavement design • HiMA for new/rehab pavements • Preservation Group (PG) study.
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2012 Track
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2012 Track
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2012 Track
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2012 Track
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2012 Track
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2012 Track
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Pavement Preservation on Lee Road 159
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Asphalt Plant
Martin Marietta Quarry
• Low ADT roadway • Very high % trucks • 14-year old 5½” pavement • Diverse pavement condition • Load data provided by quarry and asphalt plant
Lee Road 159
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1. Rejuvenating Fog Seal 2. Fibermat 3. Control 4. Control 5. Crack Seal (CS) 6. Single Layer Chip Seal 7. CS + Single Layer Chip Seal 8. Triple Layer Chip Seal 9. Double Layer Chip Seal 10. Microsurfacing + Single Chip (Cape) 11. Microsurfacing 12. CS + Microsurfacing 13. Double Layer Microsurfacing
14. Fibermat + Microsurfacing (Cape) 15. Scrub Seal + Microsurfacing (Cape) 16. Scrub Seal 17. Distress Demo Section 18. Fibermat + HMA thinlay (HMA Cape) 19. HMA Thinlay (PG 67-22) 20. HMA + 100% Foamed Recycle Inlay 21. HMA Thinlay (PG 76-22) 22. Ultra Thin Bonded Wearing Course 23. HMA Thinlay (50% RAP) 24. HMA Thinlay (5% PCRAS) 25. HMA Thinlay (High Polymer)
Pavement Preservation on Lee Road 159
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Quality
• Good material supply • Designs with actual stockpiles • Contractor quality commitment • Equipment setup and calibration • Test section preparation • Good execution.
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Emulsion Calibrated Prior to Placement
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Emulsion Calibrated Prior to Placement
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Chip Rate Checked Prior to Placement
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Plastic for Startup VariabilityL1
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Plastic for Overrun with Sample PansL1
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Plastic for Overrun with Sample PansS8B
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Tack & Chip Rate QC Measurements
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Alternative to Plastic
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Sample Treated Section on Lee Road 159 Pretreatment (July, 2012)
Outside Wheelpath Driving Towards Quarry
Inside Wheelpath Driving Towards Quarry
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Sample Treated Section on Lee Road 159 August, 2012
Outside Wheelpath Driving Towards Quarry
Inside Wheelpath Driving Towards Quarry
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Sample Treated Section on Lee Road 159 July 2, 2013
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Sample Treated Section on Lee Road 159 September 12, 2013
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Sample Treated Section on Lee Road 159 October 29, 2013
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Sample Treated Section on Lee Road 159 December 17, 2013
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Sample Treated Section on Lee Road 159 January 31, 2014
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Sample Treated Section on Lee Road 159 February 26, 2014
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Sample Treated Section on Lee Road 159 March 25, 2014
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Sample Treated Section on Lee Road 159 April 22, 2014
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Sample Treated Section on Lee Road 159 May 27, 2014
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Sample Treated Section on Lee Road 159 June 19, 2014
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Sample Treated Section on Lee Road 159 July 24, 2014
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Sample Treated Section on Lee Road 159 August 12, 2014
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Sample Treated Section on Lee Road 159 October 7, 2014
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Sample Treated Section on Lee Road 159 October 7, 2014
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Sample Treated Section on Lee Road 159 October 7, 2014
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Sample Treated Section on Lee Road 159 October 7, 2014
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Sample Treated Section on Lee Road 159 October 7, 2014
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Sample Treated Section on Lee Road 159 October 7, 2014
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Pavement Preservation on Lee Road 159
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Pavement Preservation on Lee Road 159
Condition Improving Benefit
Life Extending Benefit
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Pavement Preservation on Lee Road 159
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Pavement Preservation on Lee Road 159
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Pavement Preservation on Lee Road 159
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Pavement Preservation on Lee Road 159
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• Crack sealing appears to be beneficial in all cases • Differences between route/seal and blow/band • Scrub seal appears to exhibit crack seal benefit • Preservation treatments reduce subgrade moisture, but… • Durability of micro surface in accelerated traffic • Objective life extending benefit curves developing • Interim results presented at 2015 Track Conference.
Pavement Preservation on Lee Road 159
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Options in the 2015 Research Cycle
• Traffic continuation • Mill/inlay sections • Structural sections • Pavement preservation
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Preservation Group (PG15) Study
• Continue monitoring ‘12 sections (Track & 159) • Capture life extending benefit curve data • Partnership with MnROAD for nationwide scope • Build new sections on higher ADT roadway.
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Preservation Group (PG15) Study
• Continue monitoring ‘12 sections (Track & 159) • Capture life extending benefit curve data • Partnership with MnROAD for nationwide scope • Build new sections on higher ADT roadway.
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NCAT+MnROAD Preservation Partnership
To facilitate high value pavement research that addresses national needs using full-scale pavement testing facilities in both warm and cold climates on flexible, rigid, and composite pavement structures.
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NCAT+MnROAD Preservation Partnership
To facilitate high value pavement research that addresses national needs using full-scale pavement testing facilities in both warm and cold climates on flexible, rigid, and composite pavement structures.
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Higher ADT Off-Track Preservation
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Higher ADT Off-Track Preservation • US-280 3 miles to east of Track • 17,000 ADT, ≈9 year old surface • Westbound outside lane • ≥ MP 128.0 to MP 132.6 • Tenth mile sections • Repeat Lee Road 159 (±) • Add CCPRF,E, CIRF,E, HIR, etc. • High ABR thin overlays • Connection to Cracking Group.
NCAT Track
7¾” Asphalt Pavement 10” Aggregate Base
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www.pavetrack.com
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Dr. R. Buzz Powell, PE Assistant Director & Test Track Manager 277 Technology Parkway Auburn, AL 36830 Phone: (334) 844-6857 Cell: (334) 750-6293
Email: [email protected] Web: www.pavetrack.com Twitter: www.twitter.com/pavetrack