Recycle Asphalt Materials

Transcription

1 Recycle Asphalt Materials RAP Reclaimed Asphalt Pavements Asphalt is the leading recycling leader in the United States at 80 million plus tons recycled annually, and is the most recycled product in terms of both percentage and tonnage. Recycled asphalt pavement materials are being used in combination with virgin asphalt, asphalt construction for streets, highways, road resurfacing projects, parking lots, bike trails and are presently being placed on most all other areas that use hot-mix asphalt. The Federal Highway Administration estimates that nearly 100 million tons of asphalt pavements are either removed or milled, off roads during resurfacing and widening projects. Using Reclaimed Asphalt Products (RAP), results in lower costs, reduced use of virgin aggregate materials, lower petroleum demands, and helps to preserve landfill space. The American public has predominately been unaware of pavement recycling efforts that are taking place in their own backyard. The use of recycling products have economic benefits to everyone involved, because recycling stretches tax dollars, reduces initial construction costs, as well as environmental benefits. Industry experience over time has proven that hot-mix asphalt is a resource that can be recycled time after time for the public s benefit. Reclaimed asphalt pavements have proven that, when properly designed and constructed, these pavements will perform as well as or better than hot-mix-asphalt produced from all virgin materials. The consumer wins with lower costs of construction and rehabilitation without compromising quality. Recycle Products 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 80% 64% 60% 54% 37% 31% 23% Asphalt Pavement Scrap Steel Aluminum Cans Newspaper Plastic Beverage Containers Glass Bottles Magazines Disclaimer: Chart percentages are approximate quantities Source: EPA website. Recycling is an everyday business practice for Asphalt Specialties Company, Inc. (ASCI). ASCI will continue to be a leader in recycling, not only with the use of RAP but also in other recycled products, such as recycled concrete materials and asphalt shingles. Last year, ASCI recycled over a half-million tons in our contracting and manufacturing operations. Asphalt Specialties Company Inc. will continue to be in the forefront as environmental stewards of our land use with the use of reclaimed materials.

2 Asphalt Specialties Company Inc. (ASCI) strives to negotiate the most competitive prices in the marketplace with its vendors so we may provide the best price and service to you, our customer. The growing demand on our nation s roadways over the past couple of decades, decreasing budgetary funds, and the need to provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing pavements. The last 25 years has also seen a dramatic growth in asphalt recycling and reclaiming as a technically and environmentally preferred way of rehabilitating the existing pavements. Asphalt recycling and reclaiming meets all of our societal goals of providing safe, efficient roadways, while at the same time drastically reducing both the environmental impact and energy (oil) consumption, compared to conventional pavement reconstruction. RAS Recycle Asphalt Shingles Manufacture asphalt shingle waste is one supply of materials needed for recycling. Another available material is asphalt shingle Tear-Off s (re-roofing shingles) that is the most readily available material on the Colorado Front Range. Disposing of Tear-Off shingle is one of the largest cost factors that will help to encourage recycling. Unless this material is recycled, it will continue to be disposed in landfills, at a cost that can range from $7.00 to $ per cubic yard. Asphalt shingles require many years to breakdown and decompose. Approximately 150,000 tons of shingles are disposed of each year on the Colorado Front Range.

3 Using asphalt shingles in Hot-Mix Asphalt (HMA) is being recognized as another alternative to finding cost savings in the production of asphalt. Below is a breakdown of the composites of new asphalt shingles: Shingle Composite: Component Organic shingles Fiberglass shingles Asphalt Cement 30-36% 19-22% Mat 2-15% 2-15% Mineral granular/aggregates 20-38% 20-38% Mineral filler/stabilizer 8-40% 8-40% APTER As you can see, shingles contain other materials, including fibers, fine aggregates, and mineral filler commonly used in the production of Hot-Mix Asphalt. Below is a table that represents how to calculate the value of asphalt shingles in HMA. Shingle Economics A. Savings from asphalt cement New AC $/ton ( ) x AC % in shingles ( ) x % shingles in mix ( ) $ B. Savings from fine aggregates Fine aggregates $/ton ( ) x % fine agg. in shingles ( ) x % shingles in mix ( ) $ C. Saving from handling fee Handling fee $/ton ( ) x % shingles in mix ( ) $ D. Gross Savings per ton of hot-mix (A+B+C) E. Cost of shingles (includes trucking) Costs of collecting $/ton ( ) x % shingle in mix ( ) $ F. Processing & Crushing Process/crush cost $/ton ( ) x % shingle in mix ( ) $ G. Miscellaneous costs (capital for equipment) Misc. cost $/ton ( ) x % shingles in mix ( ) $ H. Net Savings per ton of hot mix asphalt (D less E, F, G) $ Information on Research Efforts States that have conducted laboratory studies using recycled asphalt shingles in HMA include Georgia, Ohio, North Carolina, Minnesota and Texas. In addition, Pennsylvania, North Carolina and Minnesota have conducted field studies where portions of highways or trailways have been paved with asphalt containing recycled shingles and monitored over time. The following is a list of states that allow a certain percentage of recycled asphalt shingles in hot asphalt mix pavements: Florida up to 5% manufacturer's scrap Georgia up to 5% manufacturer's scrap Indiana up to 5% manufacturer's scrap Maryland up to 5% manufacturer's scrap Michigan up to 5% manufacturer's scrap New Jersey up to 5% manufacturer's scrap North Carolina up to 5% manufacturer's scrap Ohio "certain percentage of recycled material Pennsylvania up to 5% manufacturer's scrap

4 Benefits shown from these studies include: Increased stiffness of the asphalt Decreased cracking No effect on moisture sensitivity Decreased susceptibility to rutting Decreased optimum content of virgin asphalt cement. ASCI Best Practices for Manufactured Waste Asphalt Shingles Recycling: Allocating Space Asphalt Plant Locations Collection quantity Manufactured Waste and Tear-Off s Collection quality Testing, Mix Designs (properties, gradations, mix formulas) Processing Sorted, Clean, Grinding, Sizing and Grading Materials Specifications Proven Studies and Participating Agencies End User Participation Private, Commercial and Public use CONCLUSION: 1. Based on laboratory and field studies from other states and companies, asphalt shingles can be used in the production of HMA successfully. 2. Similar to RAP use. 3. Cost savings using 5% shingle can range from $1.00/ton to $4.80/ton. All relative to the costs of asphalt shingle supply and asphalt cement. I would like to re-iterate that ASCI is the only current producer of RAS and is looking to integrate this product into our asphalt mixes, thereby projecting cost savings to our end users. Ultimately, we are promoting an energy efficient, eco-friendly process for the Front Range Market.

5 For additional information please contact: Gary Stillmunkes Asphalt Specialties Company, Inc Dallas Street Henderson, CO Office: (303) Tom Gee Asphalt Specialties Company, Inc Dallas Street Henderson, CO Cell: (303)