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
Security and Life Safety | Jul 5, 2022
What AEC firms should look for in a cybersecurity partner
When looking for expert partners in cybersecurity, AEC firms will find quite a lot of companies claiming to be at the forefront of modern threats. Here are five key points to look for when choosing a cybersecurity firm.
Performing Arts Centers | Jul 5, 2022
Tour the new Patricia Reser Center for the Arts in Oregon
This month, the community of Beaverton, Oregon, welcomed a new haven for artistic expression with the opening of Patricia Reser Center for the Arts (The Reser).
Building Team | Jul 5, 2022
Dallas’ Fair Park, home to the State Fair of Texas, will place a park atop a new parking garage
A registered National Historic Landmark, Fair Park is the 227-acre home to the Texas State Fair and various cultural institutions in Dallas, Tex.
Market Data | Jul 1, 2022
Nonresidential construction spending slightly dips in May, says ABC
National nonresidential construction spending was down by 0.6% in May, according to an Associated Builders and Contractors analysis of data published today by the U.S. Census Bureau.
Building Team | Jul 1, 2022
How to apply WELL for better design outcomes
The International WELL Building Institute (IWBI) cites attracting top talent, increasing productivity, and improving environmental, social or governance (ESG) performance as key outcomes of leveraging tools like their WELL Building Standard to develop healthier environments.
Building Team | Jul 1, 2022
Less portable potty, more movable restroom
Some contractors are packing up their portable potties and instead using the H3 Wellness Hub.
Market Data | Jun 30, 2022
Yardi Matrix releases new national rent growth forecast
Rents in most American cities continue to rise slightly each month, but are not duplicating the rapid escalation rates exhibited in 2021.
Headquarters | Jun 30, 2022
Lenovo to build its new global headquarters in Beijing
Washington, D.C.-based architecture and design firm CallisonRTKL has announced it will create the new global headquarters in Beijing for Lenovo Group, a Chinese multinational personal technology company.
Mass Timber | Jun 29, 2022
Mass timber competition: building to net-zero winning proposals
The 2022 Mass Timber Competition: Building to Net-Zero is a design competition to expand the use of mass timber in the United States by demonstrating its versatility across building types and its ability to reduce the carbon footprint of the built environment.
Laboratories | Jun 29, 2022
The "collaboratory" brings digital innovation to the classroom
The Collaboratory—a mix of collaboration and laboratory—is a networking center being designed at the University of Denver’s College of Business.