Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

NCAT/MN Road - 2015 Preservation Group Experiment

611 views

Published on

For more information visit
http://www.arra.org/about-us/job-stories/2015-ncat-mn-road-us280/

Published in: Engineering
  • Be the first to comment

  • Be the first to like this

NCAT/MN Road - 2015 Preservation Group Experiment

  1. 1. NCAT Test Track Construction CCPR & CIR, US280 MP 132 Location September 2015 Updated: 22.09.15 Mike Marshall
  2. 2. Pre-mill US280, Wirtgen W200i Milling Machine
  3. 3. Pre mill depth 5 ins, to accommodate 4 ins of Recycling RAP (including fluff) with provision for 1ins HMA overlay
  4. 4. Screened ¾ ins RAP at NCAT Yard
  5. 5. KMA220 Cold Mix Plant Production, Foam RAP Mix Foam CCPR
  6. 6. 30 t Bitumen tanker 5000 gal Water tanker 20 t Cement silo Cold mixing plant KMA 200 350 kW Payloader 20 t tip trucks Typical KMA220 CCPR Site Set Up
  7. 7. KMA220 Cold Mix Plant Control Panel
  8. 8. Foamed Asphalt Mix Design Inputs 1.5% Cement, @.0% Compaction Water, 2.5% Foamed Asphalt
  9. 9. Foamed Asphalt Test Nozzle KMA220 Plant Mix
  10. 10. As the cement requirement was low, cement loaded into feed hopper manually
  11. 11. KMA220 discharge conveyor, 100% Recycled RAP directly to truck
  12. 12. Foam RAP Mix delivered to Roadtec Paver, fitted with Carlson Screed
  13. 13. Foamed Asphalt RAP at Paver Screed
  14. 14. Paving Foamed Asphalt RAP, Compacted to 4ins depth
  15. 15. Foamed Asphalt RAP Compaction
  16. 16. Completed Foam CCPR section prior to tack coat application.
  17. 17. Emulsion Tanker & Cement Feed Connection Positions Emulsion CCPR
  18. 18. Emulsion Mix Test, determine optimum moisture %age addition
  19. 19. Paving Emulsion RAP after compaction 4ins depth Mix design, 3.0% Emulsion, 1.5% cement & 3.0% Compaction water
  20. 20. Emulsion RAP Compaction
  21. 21. Completed Emulsion CCPR section prior to tack coat application
  22. 22. Tackcoat application to both Foam & Emulsion CCPR sections following compaction Application Rate 0.050 gal/sqyd
  23. 23. Both CCPR Sections, Foam & Emulsion opened to full traffic after tackcoat application Sections were trafficked 4 hours after placing recycled RAP
  24. 24. Foam RAP CCPR Section Emulsion CCPR Section View both sections after overnight unrestricted speed high truck traffic
  25. 25. Emulsion CIR CIR Section Pre-milled to depth of 1.4ins, 1.5% cement pre-spread on milled pavement
  26. 26. Wirtgen 3800CR, recycling depth, 4ins, emulsion binder, rear load directly to paver
  27. 27. Emulsion recycled material loaded directly into following Roadtec paver hopper
  28. 28. Paving Emulsion CIR Material
  29. 29. 3800CR Control panel Emulsion mix design, 3.3% emulsion, 3.3% added compaction water
  30. 30. Emulsion CIR Compaction
  31. 31. Completed Emulsion CIR Section
  32. 32. Foam CIR

×