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
Laboratories | Apr 29, 2022
Oracle Industry Lab in Chicago enables development of solutions for multiple industries
The Oracle Industry Lab in Chicago, which provides customers in multiple industries the opportunity to test new technologies, recently opened.
Market Data | Apr 29, 2022
U.S. economy contracts, investment in structures down, says ABC
The U.S. economy contracted at a 1.4% annualized rate during the first quarter of 2022.
Codes and Standards | Apr 28, 2022
Architecture firm Perkins&Will to deliver ‘carbon forecasts’ for clients
Global architecture firm Perkins&Will says it will issue its clients a “carbon forecast” for their projects.
Retail Centers | Apr 28, 2022
Cannabis dispensary Beyond-Hello debuts ‘glass-box’ design for Culver City facility
Los Angeles’ Culver City will open its first cannabis dispensary with Beyond/Hello.
Office Buildings | Apr 28, 2022
A 48-story office tower to rise over boomtown Austin
In downtown Austin, Texas, a planned 48-story office tower, The Republic, recently secured its first major tenant—allowing for the groundbreaking by midyear.
Sports and Recreational Facilities | Apr 27, 2022
New Univ. of Texas Moody Center houses men’s and women’s basketball, other events
The recently completed 530,000 sf University of Texas Moody Center is the new home for men’s and women’s basketball at the Austin campus.
Architects | Apr 26, 2022
Low-tech skills architects need to keep in a high-tech world
As architects continue to lean into learning and mastering the latest technologies, let us not forget the foundational, fundamental skills that are still expected by clients. RS&H National Design Director Philip Robbie explains.
Green | Apr 26, 2022
Climate justice is the design challenge of our lives
As climate change accelerates, poor nations and disadvantaged communities are suffering the first and worst impacts.
Multifamily Housing | Apr 26, 2022
Fitness centers for multifamily housing: Advice from 'Dr. Fitness,' Karl Smith
In this episode for HorizonTV, Cortland's Karl Smith shares best practices for designing, siting, and operating fitness centers in apartment communities.
Mixed-Use | Apr 26, 2022
Downtown Phoenix to get hundreds of residential and student housing units
In fast-growing Phoenix, Arizona, a transit-oriented development called Central Station will sit adjacent to Arizona State University’s Downtown Phoenix campus.