Environmental Design + Construction - September 2008 - (Page S12)

CONCRETE RECYCLED RESOURCES BY JENNI PROKOPY The use of recycled materials is not new in the concrete industry, but in the past some contractors have downplayed its inclusion because of (mistakenly) perceived lower value. That time is gone, says Jason Buesing, president of ReCrete Materials, Inc. His company, along with its affiliate, Recycled Materials Company, is setting new standards for use of recycled materials in concrete. Recycled Materials Company’s role in the movement started in 1987, and accelerated in 1999 when it received the contract for deconstruction of the former Stapleton Airport in Denver. (At the time, the company joined with the Colorado School of Mines to create concrete mix designs that included recycled materials.) Since starting the deconstruction of the airport, says Buesing, the company has sold 6.5 million tons of recycled concrete and asphalt — and still operates an urban recycling center at the site. In 2006, Recycled Materials Company decided the demand for more highly-engineered recycled materials was growing fast enough that it needed to start up a separate venture to handle the prod- ReCrete Materials, Inc. created “ToroStone” from pieces of recycled runway at the former El Toro Marine Corps Air Station. ucts, and ReCrete Materials, Inc. was formed. One of its first big jobs: Enterprise Park at Stapleton, developed by Etkin Johnson Group and home to three tilt-up buildings with 441,000 square feet of office and industrial space. (CAL Construction Company is providing tilt-up services on the project.) Construction began in March 2008. According to Buesing, concrete foundations Tilt-up buildings at Enterprise Park, located at the site of the former Stapleton Airport, contain a large amount of recycled concrete aggregate in both foundations and tilt-up components. Images courtesy of ReCrete Materials, Inc. for the structures will use approximately 620 tons of recycled aggregate and 115 tons of fly ash; concrete for the tilt-up panels will use approximately 1,570 tons of recycled concrete aggregate. Much of the material is roughly 10 percent to 15 percent lighter in weight by volume, so the project requires less material overall. Plus, Insulating Concrete Forms GREEN-R Solution for Sustainable Construction Building Durability Lower Lifetime Costs Exceptional Indoor Air Quality WWW.EDCMAG.COM 888.711.5625 604.590.3111 www.quadlock.com READER SERVICE NO. s12 EDC01084Quad.indd 1 173 WWW.EDCMAG.COM/WEBCARD 12/13/07 9:28:55 AM Less Environmental Impact Faster Construction Times Superior Energy Performance http://www.quadlock.com http://www.edcmag.com http://www.quadlock.com http://www.edcmag.com/webcard

Table of Contents Feed for the Digital Edition of Environmental Design + Construction - September 2008

Environmental Design + Construction - September 2008 Contents Web TOC Editor's Note Newsline New and Notable Announcing the 2008 Excellence in Design Awards Award Winner: Yale Sculpture Building Snapshots: College and Universities Teach Sustainability Color ISH North America Green Continuing Education Special Section: Concrete Product Focus Marketplace and Classifieds Advertiser's Index Underwater Adventures

Environmental Design + Construction - September 2008

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