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Cold In Place Recycling City of Charlotte September, 2011 Amy E. Schoonover, PE Director of Public Works.

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Presentation on theme: "Cold In Place Recycling City of Charlotte September, 2011 Amy E. Schoonover, PE Director of Public Works."— Presentation transcript:

1 Cold In Place Recycling City of Charlotte September, 2011 Amy E. Schoonover, PE Director of Public Works

2 Cold In Place Recycling Tight budget Many streets in need of repair Identified major and local streets that were candidates for CIR

3 Can We Use CIR? No utility work needed under the street Evaluate type of distress that needs to be addressed Quality of the material to be recycled At least 3 inches of asphalt

4 Background Information Needed Details of pavement that was originally constructed Thickness of as-built layers Pavement cores

5 Construction Sequence Remove castings Recycle pavement Adjust structures Place overlay

6 Charlotte’s Project 1.2 miles of 3 ½-4” CIR (18,000 SY) Single train Engineered asphalt emulsion ¾” ultra-thin overlay Mikesell Street Hall, Washington, McClure Streets

7 Mikesell Street Spartan Motors main shipping entrance- dead end street Public school bus yard Schedule coordination to minimize construction impact

8 Mikesell Street Last paving ” HMA over aggregate base 3” HMA + ½” base reclamation CIR = 3.8% engineered emulsion + RAP Ultra thin overlay

9 Mikesell Street BeforeDuringAfter

10 Hall-Washington-McClure Streets Last paved ” HMA 4” HMA reclamation CIR = 2.8% engineered emulsion + RAP Ultra thin overlay

11 Minimal Disruption Hall StreetWashington St.

12 Quality Assurance Material gradation Emulsion addition rates Rolling patterns Density testing

13 Resident/business notification City website Facebook Press Releases Community Relations

14 CIR Advantages Environmentally friendly Shorter construction time Able to maintain traffic Cost effective

15 Emission Comparison

16 Additional Resources Asphalt Recycling and Reclaiming Association (ARRA) %20FINAL% pdfhttp://www.pavementpreservation.org/toolbox/links/CR%20Brochure %20FINAL% pdf Federal Highway Administration (FHWA) Transportation Research Board Michigan’s Local Technical Assistance Program


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