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Mn/DOT’s Perspective on Shingle Recycling

Mn/DOT’s Perspective on Shingle Recycling. March 4, 2004 Roger Olson, Research Operations Engineer. Building upon ongoing research and development efforts by Mn/DOT, OEA and RMRC. In cooperation with the SWMCB’s Shingle Recycling Project. Shingle - History. Mn/DOT tests

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Mn/DOT’s Perspective on Shingle Recycling

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  1. Mn/DOT’s Perspective on Shingle Recycling March 4, 2004 Roger Olson, Research Operations Engineer Building upon ongoing research and development efforts by Mn/DOT, OEA and RMRC

  2. In cooperation with the SWMCB’s Shingle Recycling Project

  3. Shingle - History • Mn/DOT tests (with University of Minnesota) • Willard Munger Trail (1990) • Hwy 25south of Mayer, MN (1991) • Scott County Hwy 17 south of Shakopee, MN (1991)

  4. Scrap Asphalt Shingles • Mn/DOT’s most recent specifications,Combined 2360 / 2350, allows 5% manufactured shingle scrap in hot mix • Shingles considered as RAP • At discretion of HMA producer

  5. Shingle Processing • Can be added like recycled asphalt pavement (RAP) • Steps include: grinding, sizing and grading • Contaminants must be removed • Certification of supply required • Manufactured waste only at this time

  6. Previous and Ongoing R&D • Phase One: Research, Development, Field Demonstrations  Specification • Phase Two: Market Development Project • Phase Three: RMRC-funded Field Demonstrations and Technology Transfer, emphasis on “Tear Off” Scrap

  7. TH 25 Test Section (Since 1991)

  8. Test Results

  9. Ongoing Mn/DOT Shingle Project Co-Sponsored By: • Minnesota Office of Environmental Assistance (OEA) • Recycled Materials Resource Center (RMRC)

  10. For More Information Roger Olson 651-779-5517 Roger.Olson@dot.state.mn.us

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