State Construction Engineer's Spec Changes in Paving Potpourri 2015

Assistant State Construction Engineer Bob Dyer and Secretary of Transportation Lynn Peterson discuss important spec changes in paving projects for 2015. Topics include elimination of anti-strip in HMA, density acceptance criteria, pavement smoothness, test frequency adjustments, and upcoming changes in RAP percentages. The presentation emphasizes the importance of quality control and adherence to standards in hot mix asphalt projects.

• Construction
• Engineering
• Paving
• State
• Specifications

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1. Paving Potpourri Paving Potpourri 2015 Spec Changes and More! Bob Dyer Assistant State Construction Engineer Lynn Peterson Secretary of Transportation WAPA Joint Training March 2015

2. Spec Changes Done Deal Eliminate Anti-Strip in temp HMA RAP/RAS Current RAP/RAS will be an amendment in April 2015 Density Acceptance by Cores Bid item for projects we want Contractor to core Date, time and initials of last edit 2

3. Spec Changes Done Deal Pavement Smoothness January 2015 GSP Mix Design Approval with QPL April 2015 Date, time and initials of last edit 3

4. Spec Changes Done Deal Test Frequency As of January 2015 As of April 2015 HMA Mix Mix Sublot size From 1/800T to 1/1000T Sublot Size (tons) 1,000 1,500 2,000 HMA Project Quantity (tons) <20,000 20,000 to 30,000 >30,000 Density Sublot size From 1/80T to 1/100T HMA Density Sublot Size (tons) 100 150 200 HMA Project Quantity (tons) <20,000 20,000 to 30,000 >30,000 Date, time and initials of last edit 4

5. Spec Changes Coming but not Finalized Increase in RAP Percent Nationally 0-15% OK; 15-25 drop a binder grade; >25 detailed mix design (like what we do now) HMA On bridge decks Should be something (GSP or amendment) by August 2015 Date, time and initials of last edit 5

6. HMA Points of Emphasis Old Way Pass/Fail with tolerance on an individual test Today s Way: Statistical Evaluation Date, time and initials of last edit 6

7. HMA Points of Emphasis Standard Spec 3-04 Fine Aggregate Angularity Sand Equivalent Coarse Aggregate Fracture 7

8. Hot Mix Asphalt, Asphalt Binder & Crude Oil Indices 600 Asphalt Binder 500 Crude Oil 400 300 200 Hot Mix Asphalt 100 0 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Base: 2002 = 100

9. Hot Mix Asphalt Unit Bid Price $ / TON $90 $80 $70 $60 $50 Trendline $40 $30 $20 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14

10. Government Regulation and Taxes

11. Government Regulation and Taxes

12. Bob Dyer Assistant State Construction Engineer, Roadway DyerB@wsdot.wa.gov 360.705.6980 12