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
| Sep 30, 2014
The Big Room concept: Using Building Team collocation to ensure project success
Implementing collocation via the Big Room concept will remove silos, ensure a cadence for daily communication, promote collaboration, and elevate your chances for success, write CBRE Healthcare's Stephen Powell and Magnus Nilsson.
| Sep 30, 2014
USGBC, Bank of America name recipients of 2014 Affordable Green Neighborhoods Grant Program
Eleven projects have been selected for the 2014 Affordable Green Neighborhoods grant program. Each will receive $31,000 and an educational package to support their pursuit of LEED for Neighborhood Development certification.
Sponsored | | Sep 30, 2014
What are you doing to win business and improve morale?? VDC Director Kris Lengieza shares ways to do both
Bluebeam's Sasha Reed sits down with Kris Lengieza, Director of Virtual Design and Construction for Stiles Corporation, to learn how he approaches change management. SPONSORED CONTENT
Sponsored | | Sep 30, 2014
How project managers can manage technology
Not long ago, the role of a construction project manager revolved around working with people: employees, vendors, consultants, designers, subcontractors and owners. Today, project managers primarily manage information. SPONSORED CONTENT
| Sep 30, 2014
With its 'stacked volumes' scheme, 3XN wins bid to design high-rise in Sydney
By dividing the 200-meter building into five separate volumes and placing atria throughout each volume, the spaces become smaller, more intimate social environments, according to the Danish architects.
| Sep 29, 2014
Living Building vs. LEED Platinum: Comparing the first costs and savings
Skanska USA's Steve Clem breaks down the costs and benefits of various ultra-green building standards and practices.
| Sep 29, 2014
10 common deficiencies in aging healthcare facilities
VOA's Douglas King pinpoints the top issues that arise during healthcare facilities assessments, including missing fire/smoke dampers, out-of-place fire alarms, and poorly constructed doorways.
| Sep 29, 2014
Snøhetta releases final plan for terraced central library in Calgary
The competition-winning New Central Library is now in the final design stages, after two years of community engagement on the part of design firms Snøhetta and DIALOG.
| Sep 25, 2014
Jean Nouvel unveils plans for National Art Museum of China
Of the design, Nouvel describes it as inspired by the simplicity of “a single brush stroke.”
Sponsored | | Sep 25, 2014
Your business doesn’t always need to change
By now, the idea that organizations must adapt to maintain both relevance and market share is so ingrained that it’s been reduced to pithy sayings. But is constant adaptation always the best policy? SPONSORED CONTENT
