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
Senior Living Design | Sep 8, 2022
What’s new with AQ: The top trends in active adult living
Today's 55-or-better buyers are ready to design their lives and their homes as they see fit. With so much growth on tap, builders and developers must stay apprised of trends related to home, environment, and culture of 55+ communities.
Sports and Recreational Facilities | Sep 8, 2022
Chicago Bears unveil preliminary master plan for suburban stadium district
As the 2022 NFL season kicks off, the league’s original franchise is fortifying plans to leave its landmark lakefront stadium for a multi-billion-dollar mixed-use stadium district in northwest suburban Arlington Heights.
| Sep 8, 2022
The Twin Cities’ LGBTQ health clinic moves into a new and improved facility
For more than 50 years, Family Tree Clinic has provided reproductive and sexual health services to underserved populations—from part of an old schoolhouse, until recently.
| Sep 8, 2022
U.S. construction costs expected to rise 14% year over year by close of 2022
Coldwell Banker Richard Ellis (CBRE) is forecasting a 14.1% year-on-year increase in U.S. construction costs by the close of 2022.
Giants 400 | Sep 7, 2022
Top 95 Industrial Sector Architecture + AE Firms for 2022
Ware Malcomb, Stantec, Haskell, and Macgregor Associates Architects top the ranking of the nation's largest industrial facility sector architecture and architecture/engineering (AE) firms for 2022, as reported in Building Design+Construction's 2022 Giants 400 Report.
| Sep 7, 2022
Use of GBCI building performance tools rapidly expanding
More than seven billion square feet of project space is now being tracked using Green Business Certification Inc.’s (GBCI’s) Arc performance platform.
| Sep 7, 2022
K-8 school will help students learn by conducting expeditions in their own communities
In August, SHP, an architecture, design, and engineering firm, broke ground on the new Peck Expeditionary Learning School in Greensboro, N.C. Guilford County Schools, one of the country’s 50 largest school districts, tapped SHP based on its track record of educational design.
| Sep 6, 2022
Herbert V. Kohler, Jr. (1939-2022) An incomparable spirit
Dynamic leader and Kohler Co. Executive Chairman Herbert Vollrath Kohler, Jr. passed away on September 3, 2022, in Kohler, Wisconsin.
| Sep 6, 2022
Demand for flexible workspace reaches all-time high
Demand for flexible workspace including coworking options has never been higher, according to a survey from Yardi Kube, a space management software provider that is part of Yardi Systems.
| Sep 2, 2022
Converting office buildings to apartments is cheaper, greener than building new
Converting office buildings to apartments is cheaper and greener than tearing down old office properties and building new residential buildings.