Recycling Tear Off Shingles in Bituminous Pavement Ramsey

Recycling Tear Off Shingles in Bituminous Pavement Ramsey County 2007 Lower Afton Road Trail Project By Jerry Auge, Jr. – Project Manager 651 -266 -7117 jerry. auge@co. ramsey. mn. us

Project Overview • Project Consisted of Utilizing Recycled Products – – – – – Tear Off Shingles in Bituminous Mix Recycled Plastics in Retaining Wall Recycled Plastic/Rubber Pavers Class 7 Aggregate (“gravel”) base Reuse of sand in Rain Gardens Benches have recycled plastics Utilizing natural soil erosion material HDPE Pipe Natural Products

Bituminous Pavement Design • Partially State Aid Funded • Mn/DOT Engineered HMA Spec. – Early involvement of Mn/DOT – County required 5% tear off shingles! – Option to have RAP – Utilized type PG 58 -28 virgin asphalt binder oil – Minimum of 70% virgin asphalt binder in mix

LAT Project RAS Spec – Shingles shall be ½-inch minus – Free of nails, other metal, plastic, wood, glass, other debris (less than 0. 5 percent) – Suppliers written certification that the shingles are in compliance – County to approve recycling plans for: • Where to source the tear-off shingles supplies • How debris will be sorted out from shingles • Grinding, screening and storage

LAT Project RAS Spec (continued) – County and Mn/DOT staff shall inspect recycling operations – Samples of final RAS product shall be provided to County and Mn/DOT

Source of Sorted Shingles • 75% sorted on site at the roofing job – J Zac, Inc. roofing company – Hauled by Veit – Minor contamination • 25% supplied from transfer station – Veit Industries – Minimal contamination

Omann’s Grinding Process: Phase I • Ground to 8” minus • Removed 95% of nails • Removed most of the remaining contamination

Omann’s Grinding Process: Phases II and III • Removed remaining nails • Removed all metallic material • Ground shingles to a very fine consistency 7/16 – inch minus • Provided very clean product to Midwest Asphalt

Bituminous Supplier & Installer: Midwest Asphalt • Utilized oil in recycled shingles as partial replacement of virgin asphalt oil • Used recycled shingles at 5% in place of recycled asphalt pavement (RAP)

Concerns/Lessons Learned With Tear off Shingles • • • Warm weather Wind Ground Shingle stockpile - tacky HMA – tacky

Recycling Tear Off Shingles in Bituminous Pavement Ramsey County 200 7 Lower Afton Road Trail Project By Jerry Auge, Jr. – Project Manager 651 -266 -7117 jerry. auge@co. ramsey. mn. us