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
Contractors | Oct 5, 2022
Materials shortages, cost spikes throwing Design-Bid-Build process out of whack
The traditional Design-Bid-Build delivery process is under considerable stress this year as materials shortages and cost spikes are upending usual practices, according to a new report from JLL.
Green | Oct 5, 2022
In California, a public power provider’s new headquarters serves as a test case for an innovative microgrid and for reducing greenhouse gas emissions
Sonoma Clean Power (SCP), the public power provider for California’s Sonoma and Mendocino Counties, recently unveiled its new all-electric headquarters.
Contractors | Oct 4, 2022
Which comes first, the building or the cost estimate?
At the start of a project, don’t forget to establish financial parameters when you’re discussing the design and program. By establishing the costs up front, you can avoid the pitfalls that might derail your project and guarantee its lasting success.
Fire and Life Safety | Oct 4, 2022
Fire safety considerations for cantilevered buildings
Bold cantilevered designs are prevalent today, as developers and architects strive to maximize space, views, and natural light in buildings. Cantilevered structures, however, present a host of challenges for building teams, according to José R. Rivera, PE, Associate Principal and Director of Plumbing and Fire Protection with Lilker.
| Oct 4, 2022
Rental property owners want access to utility usage data for whole properties
As pressure from investors for ESG reporting mounts, owners of multifamily properties increasingly look to collect whole-building utility usage data.
| Oct 4, 2022
In dire need of affordable housing, Aspen, Colo. will get a development that provides 277 affordable homes
A few miles from downtown Aspen, Colo., a development will provide 277 new affordable homes for an area experiencing a dire affordable housing crisis.
Green | Oct 3, 2022
California regulators move to ban gas heaters for existing buildings
California regulators voted unanimously recently on a series of measures that include a ban on the sale of natural gas-powered heating and hot water systems beginning in 2030.
| Oct 3, 2022
The College of the Holy Cross completes a $110 million performing arts center
In Worcester, Mass., a one-hour drive from Boston, the College of the Holy Cross has completed its $110 million Prior Performing Arts Center.
Resiliency | Sep 30, 2022
Designing buildings for wildfire defensibility
Wold Architects and Engineers' Senior Planner Ryan Downs, AIA, talks about how to make structures and communities more fire-resistant.
| Sep 30, 2022
Manley Spangler Smith Architects partners with PBK in strategic merger
Manley Spangler Smith Architects (MSSA), a Georgia-based, full-service architectural firm specializing in educational and municipal facilities, announced today a significant development aimed at increasing its capabilities, expertise, and suite of services.
