Scrap tires could gain a new purpose as ingredients for construction materials, thanks to research at Missouri University of Science and Technology.
Discarded tires are a big problem. Landfills are teeming with them and they can harbor disease-carrying mosquitos and rodents. Stockpiles of old tires also burn easily — creating fires that can quickly get out of control and may burn for months or even years.
But the longevity and resilience of scrap tires also makes them ideal for other uses.
Dr. Mohamed A. El Gawady, a researcher at Missouri S&T, is currently testing new masonry blocks made with ground tires.
“Rubber has a lot of benefits in addition to its sustainability,” says El Gawady, associate professor of civil, architectural and environmental engineering. “It’s very durable and provides good insulation. Among their many potential benefits, these new blocks could cut heating bills by 50 percent.”
ElGawady has been working with Midwest Block and Brick, a Jefferson City, Mo.-based company, to create the blocks, which are made from sand and scrap tires ground to fine particles.
These rubber-added blocks, called rubberized blocks, were constructed with a variety of ratios of sand to rubber particles before coming up with the right balance.
“The rubber makes the blocks a bit weaker, so after testing various percentages, we now only replace about 20 percent of the sand with rubber, so the blocks retain their strength,” ElGawady says.
He and his students use a compression machine to test and compare the strength of prisms built with the rubberized blocks to conventional concrete masonry blocks.
Both rubberized and conventional blocks are being tested in an environmental chamber at Missouri S&T. In the chamber, the blocks undergo cycles of extreme temperatures and humidity levels, simulating different weather conditions. The rubberized blocks are also tested under cyclic compression loads simulating earthquake loads.
“Construction with these new blocks could improve a building’s resiliency during an earthquake by acting as shock absorbers,” says ElGawady.
Related Stories
| Oct 13, 2010
Campus building gives students a taste of the business world
William R. Hough Hall is the new home of the Warrington College of Business Administration at the University of Florida in Gainesville. The $17.6 million, 70,000-sf building gives students access to the latest technology, including a lab that simulates the stock exchange.
| Oct 13, 2010
Science building supports enrollment increases
The new Kluge-Moses Science Building at Piedmont Virginia Community College, in Charlottesville, is part of a campus update designed and managed by the Lukmire Partnership. The 34,000-sf building is designed to be both a focal point of the college and a recruitment mechanism to get more students enrolling in healthcare programs.
| Oct 13, 2010
Cancer hospital plans fifth treatment center
Construction is set to start in December on the new Cancer Treatment Centers of America’s $55 million hospital in Newnan, Ga. The 225,000-sf facility will have 25 universal inpatient beds, two linear accelerator vaults, an HDR/Brachy therapy vault, and a radiology and imaging unit.
| Oct 13, 2010
Apartment complex will offer affordable green housing
Urban Housing Communities, KTGY Group, and the City of Big Bear Lake (Calif.) Improvement Agency are collaborating on The Crossings at Big Bear Lake, the first apartment complex in the city to offer residents affordable, eco-friendly homes. KTGY designed 28 two-bedroom, two-story townhomes and 14 three-bedroom, single-story flats, averaging 1,100 sf each.
| Oct 13, 2010
Residences bring students, faculty together in the Middle East
A new residence complex is in design for United Arab Emirates University in Al Ain, UAE, near Abu Dhabi. Plans for the 120-acre mixed-use development include 710 clustered townhomes and apartments for students and faculty and common areas for community activities.
| Oct 13, 2010
HQ renovations aim for modern look
Gerner Kronick + Valcarcel Architects’ renovations to the Commonwealth Bank of Australia’s New York City headquarters will feature a reworked reception lobby with back-painted glass, silk-screened logos, and a video wall.
| Oct 13, 2010
New health center to focus on education and awareness
Construction is getting pumped up at the new Anschutz Health and Wellness Center at the University of Colorado, Denver. The four-story, 94,000-sf building will focus on healthy lifestyles and disease prevention.
| Oct 13, 2010
Community center under way in NYC seeks LEED Platinum
A curving, 550-foot-long glass arcade dubbed the “Wall of Light” is the standout architectural and sustainable feature of the Battery Park City Community Center, a 60,000-sf complex located in a two-tower residential Lower Manhattan complex. Hanrahan Meyers Architects designed the glass arcade to act as a passive energy system, bringing natural light into all interior spaces.
| Oct 13, 2010
Community college plans new campus building
Construction is moving along on Hudson County Community College’s North Hudson Campus Center in Union City, N.J. The seven-story, 92,000-sf building will be the first higher education facility in the city.
| Oct 13, 2010
Bookworms in Silver Spring getting new library
The residents of Silver Spring, Md., will soon have a new 112,000-sf library. The project is aiming for LEED Silver certification.