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