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Highly Modified Binder Yield Performance Gains for I-40 Project

Highly Modified Binder Yield Performance Gains for I-40 Project. 17 th Annual Conference & Workshop Grand Hyatt Seattle, Washington February 9-11, 2016. Kenneth Ray Hobson, P.E. Outline. NCAT 2009 Cycle N8 Caddo County I-40 3 Year Fatigue Research at OU LTPP SPS-10 Wagoner County GTR

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Highly Modified Binder Yield Performance Gains for I-40 Project

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  1. Highly Modified Binder Yield Performance Gains for I-40 Project 17th Annual Conference & Workshop Grand Hyatt Seattle, Washington February 9-11, 2016 Kenneth Ray Hobson, P.E.

  2. Outline • NCAT 2009 Cycle N8 • Caddo County I-40 • 3 Year Fatigue Research at OU • LTPP SPS-10 • Wagoner County GTR • Conclusions

  3. OK N9-N8 Sections

  4. NCAT 2009 Cycle N8 OK Sections http://pavetrack.com/construction.htm

  5. NCAT 2009 Cycle N8 • 2006 Cycle Perpetual 10″ thick Experiment • Failed after 10 MESALs • 2009 Cycle • Milled and Replaced  5.0″ • Two Fabric Types • Delay Bottom-up Fatigue

  6. NCAT 2009 Cycle N8

  7. NCAT 2009 Cycle N8 - Failure

  8. NCAT 2009 Cycle N8 • After 3.5 MESALs • Mill and Replace (PG 76E-28) • 1.25″ — 3/8″ [9.5 mm] NMAS • 3.25″ — 3/4″ [19 mm] NMAS • 1.25 ″ — 3/8″ [9.5 mm] NMAS • RIL (+0.2% Pb)

  9. NCAT 2009 Cycle N8 • Lasted 16.2 MESALs

  10. Caddo County I-40 MP 102-104

  11. Caddo County I-40 – 10/12 • Mill 5″ & Replace (PG 76E-28) • 3/4″ — OGFSC (PG 70-28 OK) • 1.5″ — 3/8″ [9.5 mm] NMAS S5 • 2.5″ — 3/4″ [19 mm] NMAS S3 • 2.5″ — 3/4″ [19 mm] NMAS S3 • 1.5″ — 3/8″ [9.5 mm] NMAS S5 • RIL (+0.2% Pb)

  12. Caddo County I-40 – TFHRC

  13. Caddo County I-40 – TFHRC Damage

  14. Caddo County I-40 – 1/21/16

  15. 3 Year Fatigue Research at OU • Select Best Fatigue Test for ODOT • Specify Fatigue Test Limits • Draft Fatigue Test Method if Needed

  16. 3 Year Fatigue Research at OU • Purchase and Install Fatigue Test Equipment at ODOT • Purchase and Install AMPT at ODOT • Train ODOT Personnel

  17. 3 Year Fatigue Research at OU • Chose SCB-LTRC Test Method • Delay Final for LTPP SPS-10 Research

  18. LTPP SPS-10

  19. LTPP SPS-10

  20. LTPP SPS-10 – SCB-LTRC

  21. LTPP SPS-10

  22. LTPP SPS-10 Min.

  23. LTPP SPS-10

  24. Wagoner County GTR

  25. Wagoner County GTR

  26. Wagoner County GTR • ODEQ Sponsored Research • OU GTR Literature Review • ODOT FWD Tests • ODOT GTR Mix Designs • OU SCB-LTRC Tests

  27. Conclusions • Based on N8 and Caddo County Experience and NCAT SN of 0.54 • Design Thickness -20%

  28. Conclusions – SN 0.44=7″ HMA

  29. Conclusions – SN 0.54=5.5″ HMA

  30. Conclusions • ODOT Adopt Fatigue Test 2018 • Dynamic Modulus • LTPP SPS-10 Fatigue Tests Complete Late 2016 • Wagoner County GTR • Construct Spring 2016 • Fatigue Performance is Key

  31. Questions? khobson@odot.org

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