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16 th Annual ICAR Symposium Session C1: DOT/Federal Agency Panelists

This session discusses the Materials Division Web Site and the research conducted on aggregate issues in Oklahoma, including aggregate base research and AIMS research.

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16 th Annual ICAR Symposium Session C1: DOT/Federal Agency Panelists

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  1. 16th Annual ICAR SymposiumSession C1: DOT/Federal Agency Panelists Aggregate Issues in Oklahoma Kenneth Ray Hobson, P.E. QA Engineer – Materials Division May 14, 2008

  2. Outline • Materials Division Web Site • 5 Step Review of Aggregate Information • Aggregate Base Research • AIMS Research • Micro-Deval Usage

  3. Materials DivisionWeb Site Navigationfor Aggregate Information • Step 1: Navigate to the Materials Web Site

  4. http://odot.org/materials

  5. Materials DivisionWeb Site Navigationfor Aggregate Information • Step 1: Navigate to the Materials Web Site • Step 2: Navigate to Materials & Testing

  6. http://odot.org /materials /materials.htm

  7. Materials DivisionWeb Site Navigationfor Aggregate Information • Step 1: Navigate to the Materials Web Site • Step 2: Navigate to Materials & Testing • Step 3: View Approved Aggregate Materials

  8. APL

  9. ALL

  10. Materials DivisionWeb Site Navigationfor Aggregate Information • Step 1: Navigate to the Materials Web Site • Step 2: Navigate to Materials & Testing • Step 3: View Approved Aggregate Materials • Step 4: View Aggregate Test Data

  11. Test Data

  12. Coarse Aggregate

  13. Coarse Agg. Data

  14. Materials DivisionWeb Site Navigationfor Aggregate Information • Step 1: Navigate to the Materials Web Site • Step 2: Navigate to Materials & Testing • Step 3: View Approved Aggregate Materials • Step 4: View Aggregate Test Data • Step 5: Aggregate Specifications

  15. Bases

  16. 303

  17. Materials

  18. 703

  19. Aggregate Base Research • Team with ODOT, Contractors and Academia (OTI) • Design New Gradation • Require High Permeability • Producible • Field Test Project • Control Sections • Geotextiles • Various Gradations (new and existing) • Test at Various Stages • Constructed at the University of Oklahoma

  20. AIMS Research • Researchers at the University of Oklahoma • Dr. Zaman, Dr. Laguros and Ashish Gupta • Coarse Aggregate • Quantify: 3-d Shape, Angularity and Texture • Sizes 4.75 - 37.5 mm • Fine Aggregate • Quantify: 3-d Shape and Angularity • Sizes 4.75 – 0.15 mm

  21. Micro-Deval Usage • Adopted in 2003 by Special Provision for HMA • Max Loss of 25 for 30 Million ESALs • Paper and Field Performance Reviewed to set Specification • In-House Research Varied Temperature, Loading and Gradation • Change is not Easily Accepted • AASHTO Standard to be Revised

  22. Thank you! khobson@odot.org

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