The Hassan / Omann Shingles Recycling Demonstration Project A Presentation by Bill Boettner At the...
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Transcript of The Hassan / Omann Shingles Recycling Demonstration Project A Presentation by Bill Boettner At the...
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The Hassan / Omann Shingles Recycling Demonstration Project
A Presentation by Bill BoettnerAt the Dakota County Shingles Recycling Workshop
On Tuesday, December 4, 2007
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Who’s Who• Local agency sponsor: Town of Hassan• Original grant funding source: Minnesota Local Road
Research Board’s (LRRB)Local Operational Research Assistance (OPERA) program
• Shingle recycler, HMA producer and paving contractor:Omann Brothers
• Second source of grant funding:Hennepin County Lead By Example Program
• Key partner: Mn/DOT
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Who’s Who(continued)
• In-kind field support and technical assistance:Mn/DOT and Hennepin County DOT
• Third source of grant funding:Dakota County
• Additional lab work: Professor Mihai Marasteanu, U of MN Dept. of Civil Engineering
• Coordination and project management services: SWMCB via DKA
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Project Objectives
• Test tear-off RAS in wear course• Compare tear-off RAS vs. manufacturers’
RAS vs. virgin only HMA• No RAP in any test mix• Continue analysis of cost savings
potential
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Shingles Grinding by Omann
• ½-inch minus• G.L. Roofing Company provided 12 tons of
clean, certified tear-off shingles• Written certification forms used to document
compliance with state and federal rules• Nails removed by a series of magnets
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Shingles Grinding by Omann(continued)
• Three stage grinding process• Nails removed by a series of magnets and a
metal detector• July 18, 2006 observation by Mn/DOT and
Hennepin County• RAS stockpiled for a month prior to use.
“Fluffed” immediately prior to use in HMA plant.
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Omann Paving
• August 22, 2006, Omann Brothers first graded and then compacted the gravel road in preparation for paving
• August 23, 2006, the base course of hot-mix asphalt was applied
• August 25 , 2006 the wear course was applied
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Observations of Pavement Performance To-Date
• Mn/DOT has conducted two field surveys– March 2007– September 17, 2007
• Cracking– No observed pre-mature cracking
• Rutting– Using a FACE Dipstick®– Slight and irregular rutting with no significant
difference between mix types
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Other Presentations and Video *
Hassan / Omann Project web page onwww.ShingleRecycling.org
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For More Information• www.ShingleRecycling.org• Eddie Johnson, Mn/DOT: Unpublished report on
Rutting “Dipstick” Survey (October 2007)• Jim McGraw, Mn/DOT: Power Point presentation
to July 11, 2007 project close-out meeting• Mihai Marasteanu, U of MN: Power Point
presentation to July 11, 2007 project close-out meeting
• Debra Haugen, DKA: Final Report to LRRB (May 31, 2007)