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Second Asphalt Shingle Recycling Forum The Forum was held April 13, 2003 Sponsored by: Mn/DOT MOEA Funded in Part by: Recycled Materials Resource Center (RMRC) Website: The Forum was held April 13, 2003 Sponsored by: Mn/DOT MOEA Funded in Part by: Recycled Materials Resource Center (RMRC) Website:
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Wayne GjerdeMarket Development Coordinator
Presentation at the March 4, 2004
48th Annual MAPA Contractors’ Workshop
OEA’s Role in Shingle Recycling• Manufactured Asphalt Shingle Scrap • Tear-Off Asphalt Shingle Scrap
Second Asphalt Shingle Recycling Forum
The Forum was held April 13, 2003
Sponsored by:• Mn/DOT• MOEA
Funded in Part by:• Recycled Materials Resource Center (RMRC)
Website:www.projects.dot.state.mn.us/uofm/shingles
Second Asphalt Shingle Recycling Forum• Identified opportunities and barriers• Proposed National ASSHTO Shingle
Specification• Expanded the network of professionals
Second Asphalt Shingle Recycling Forum (continued)
• Identified, reviewed and discussed the latest research
• Discussed key issues and next steps
Shingle Scrap Characteristics in Minnesota
Manufactured Scrap• 40,000 to 50,000 tons per
year from manufacturers• Three manufacturing
plants• 20% to 40% recycled
in 2003
Tear-Off Scrap• 400,000 tons per year of
tear-off (post consumer) • From re-roofing projects
(hundreds of contractors)• Currently 100%
Landfilled
Three Asphalt Shingle Manufacturers in Minnesota:• CertainTeed
(Shakopee)
• GAF (Minneapolis)
• Owens Corning (Minneapolis)
Three Shingle Recyclers• Bituminous Roadways
(Inver Grove Heights, MN)
• Allied Blacktop (Eau Claire, WI)
• Omann Brothers Paving (St. Michael, MN)
Manufactured Shingle Scrap – Experience To-Date• Two of three shingle manufacturers have
contracts to manage their shingle waste• For more information about availability of
ground shingle scrap, contact recyclers• Excellent acceptance by Counties, cities,
townships and private customers
Key Operational Lessons Learned• Savings in virgin asphalt and aggregate costs
range between $0.50 to $1 per ton of finished HMA
• Cost of processing can range from $12 to $15 per ton of whole shingle scrap feedstock
• Production rate can range from 20 to 30 tons per hour
• Maintenance (e.g., hard surfacing of grinding surfaces) is critical
Key Operational Issues (cont’d)
• Airborne dust, fibers and other particles can be managed
• Ground shingle product may re-agglomerate (especially with organic / felt shingles)
• Regrinding just before use in HMA plant can help maximize benefit of shingles
• Oversized product off of screen (1/2-inch plus) can be re-ground or potentially used as is in alternative applications
Alternative End Use Applications• Aggregate as base• Dust control on existing aggregate
surfaced roads• Lightweight, cold mix pavement
alternatives
Minnesota’s Tear-Off Demonstration Projects• RMRC-sponsored air sampling in 2002• Tear-off scrap collection by Sella Roofing• Sorting and transfer by Armor Waste• Bituminous Roadways installation for
City of St. Paul residential paving in 2003
ContactsMinnesota Office of Environmental AssistanceWayne Gjerde Market Development Coordinator520 Lafayette Road N Floor 2St. Paul, MN 55155-4100(651) [email protected]
Contacts (continued)Minnesota Office of Environmental
AssistanceDon Kyser Project Engineer520 Lafayette Road N Floor 2St. Paul, MN 55155-4100(651) [email protected]
Thank You! • MAPA• Asphalt Roofing Shingles Manufacturers:
– CertainTeed– GAF– Owens Corning
• Shingle Recyclers:– Allied Blacktop– Bituminous Roadways– Omann Brothers Paving
• SWMCB• Mn/DOT• RMRC
