Minnesota Research
A significant amount of related tear-off shingles recycling development work is underway in Minnesota. On July 12, the Minnesota Department of Transportation (Mn/DOT) and the Solid Waste Management Coordinating Board (SWMCB) cosponsored a summit meeting and workshop to review and discuss results of a recent series of laboratory analyses from the 'Minnesota Lab Research on Tear-off Shingles Scrap ' project. These lab studies were originally funded by the Minnesota Office of Environmental Assistance (OEA ), now an office of the Minnesota Pollution Control Agency (MPCA). Also, the Missouri Department of Transportation (MoDOT) funded a similar study. The University of Minnesota, Department of Civil Engineering’s asphalt lab conducted indirect tensile strength tests on both sets of hot mix asphalt (HMA) samples (from Minnesota and from Missouri). Mn/DOT and MoDOT also conducted their own series of tests on the cold RAS.
This meeting is summarized in a separate document, along with the Power Point presentations. Click here to view these presentations. The July 12 Mn/DOT meeting was very successful in bringing together key parties on the cutting edge of research and development.
A number of the project partners have initiated a new asphalt shingles recycling demonstration in Minnesota known as the Town of Hassan / Omann Brothers Shingle Recycling Demonstration Project. This Hassan / Omann research and development project is intended to conduct field and lab research on tear-off shingles in various HMA mix types. The Hassan / Omann Project now enjoys funding from three different local Minnesota agencies. Demonstration – scale tear-off shingles grinding took place on July 18. HMA production of the test mixes and paving construction was completed on August 23 – 24, 2006. Click here to view a project summary and a short video on the grinding of the shingles and paving of the demonstration. A final report will be available once the laboratory testing is completed.
For more information please contact Dan Krivit with Dan Krivit and Associates at: DKrivit@bitstream.net
