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
Architects | Mar 11, 2016
Architecture for Humanity rebrands itself as Open Architecture Collaborative
With a new name, logo, and mission, the Open Architecture Collaborative is seeking a fresh start.
Architects | Mar 11, 2016
AIA survey finds many women and minority architects still feeling underrepresented and unfulfilled
Dissatisfaction with “work-life balance” and compensation are cited as reasons why companies’ diversity strategies may be faltering.
University Buildings | Mar 11, 2016
How architects can help community colleges promote community on campus
Even in the face of funding challenges and historic precedent, there are emerging examples of how partnership between two-year academic institutions and designers can further elevate community on campus. CannonDesign's Carisima Koenig has a few key examples.
Architects | Mar 10, 2016
Value engineering: How to manage the process and limit the risk of VE
AEC consultant Steve Whitehorn shares several ways in which architects can be more effective managers of value-engineered change.
Architects | Mar 9, 2016
Two Houston firms merge to form Method Architecture
In mid-2016, Architects-Plus and Three Square Design Group will join to make a studio that will design industrial centers, corporate interiors, breweries, and more.
Hotel Facilities | Mar 7, 2016
Exclusive villas and spa in China will be built at the center of a lake
The only connection between the complex and the mainland will be a narrow pedestrian bridge.
Office Buildings | Mar 2, 2016
HDR redesigns Twin Cities' studio to have coffee shop vibe
With open spaces, huddle rooms, and a design lab, the firm's new digs are drastically different than the old studio, which felt like working in a law office. Design Principal Mike Rodriguez highlights HDR's renovation plan.
Architects | Feb 25, 2016
12 architects selected for 2016 AIA Young Architects Award
Winners include Amy Kalar and Karen Lu, both with HGA, BNIM's Carey Nagle, and MSR Design's Bob Ganser.
Architects | Feb 24, 2016
Is the booming freelance economy a threat to AEC firms?
By shifting the work (and revenue) to freelancers, “platform capitalism” startups have taken considerable market share from traditional businesses.
Industry Research | Feb 22, 2016
8 of the most interesting trends from Gensler’s Design Forecast 2016
Technology is running wild in Gensler’s 2016 forecast, as things like virtual reality, "smart" buildings and products, and fully connected online and offline worlds are making their presence felt throughout many of the future's top trends.
