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
| Jun 23, 2014
Gehry's 'glass sail' cultural center for Foundation Louis Vuitton set to open in October
Comissioned by Bernard Arnault, American legendary architect Frank Gehry's newest structure in Paris for Foundation Louis Vuitton will house eleven galleries and an auditorium for performing arts.
| Jun 23, 2014
Power of IPD: Is integrated project delivery truly a transformative delivery model?
Now that many of the first-generation IPD projects have been completed, CBRE Healthcare's Tim McCurley and Stephen Powell ponder the lessons learned and pros and cons of the industry's newest delivery model.
| Jun 23, 2014
Lilker Associates launches Lighting Group; David Cyr announced as Director
New division rounds out building systems services offerings for the Manhattan-based consulting firm.
| Jun 23, 2014
Berlin House of One will accommodate Muslims, Jews, and Christians
The building will rise on the ruins of a 13th-century Christian church that was damaged during WWII and eventually demolished.
| Jun 22, 2014
5 ways to improve your firm’s branding efforts
Establishing, conveying, and maintaining a powerful brand is a critical component of an AEC firm’s marketing strategy. Here are five strategies to make a greater impact with your firm’s branding efforts.
Sponsored | | Jun 22, 2014
JW Marriott Indianapolis redefines city’s skyline
The 34-story JW Marriott is both the largest and tallest hotel in Indianapolis. One of the most prestigious hotels in the city, the JW Marriott has hosted celebrities and NFL teams alike.
| Jun 20, 2014
HOK releases proposal for Obama Library and Museum Campus
Proposal would locate the library in Chicago's historic Bronzeville neighborhood, aiming for urban revitalization as well as Living Building certification.
| Jun 20, 2014
Sterling Bay pulled on board for Chicago Old Main Post Office project
Sterling Bay Cos. and Bill Davies' International Property Developers North America partner up for a $500 million restoration of Chicago's Old Main Post Office
| Jun 20, 2014
First look: Hive-like 'Learning Hub' to be built in Singapore
In a competition to design a "Learning Hub" for students at Nanyang University in Singapore, London-based firm Heatherwick studio has won with a rounded, hive-like design.
| Jun 20, 2014
U.S. Energy Information Administration releases preliminary Commercial Buildings Energy Consumption Survey results
Federal survey project shows that commercial-building floorspace has grown 22% since 2003; energy-use data will be released in Spring 2015.