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
Giants 400 | Nov 18, 2021
2021 Multifamily Sector Giants: Top architecture, engineering, and construction firms in the U.S. multifamily building sector
Clark Group, Humphreys and Partners, and Kimley-Horn head BD+C's rankings of the nation's largest multifamily building sector architecture, engineering, and construction firms, as reported in the 2021 Giants 400 Report.
Laboratories | Nov 18, 2021
Tapping into the life sciences building boom
Paul Ferro of Form4 Architecture discusses how developers are pivoting to the life sciences sector, and what that means for construction and adaptive reuse.
2021 Building Team Awards | Nov 17, 2021
Caltech's new neuroscience building unites scientists, engineers to master the human brain
The Tianqiao and Chrissy Chen Institute for Neuroscience at the California Institute of Technology in Pasadena wins a Gold Award in BD+C's 2021 Building Team Awards.
K-12 Schools | Nov 10, 2021
K-12 school design innovation: 'Learning Everywhere' and the mobile classroom
Last September, AIA San Francisco awarded the Professional Category in its 2021 Future Classroom Competition to a five-person team from Culver City, Calif.-based Berliner Architects. The firm was selected for its “Learning Everywhere” idea that features a mobile strategy for education at school, home, on field trips, and in transit. BD+C's John Caulfield discuss that concept with Richard Berliner, AIA, Principal, Berliner Architects.
Architects | Nov 9, 2021
Download BD+C’s 2021 Design Innovation Report
AEC and development firms share where new ideas come from, and what makes them click.
Architects | Nov 9, 2021
Download BD+C’s 10 Predictions for the Construction Industry in 2022
Our prognostications focus on how AEC firms will streamline and modernize their projects and operations.
Architects | Nov 9, 2021
Pelli Clarke Pelli Architects announces renaming
Founded by Cesar Pelli with partners Fred Clarke and Diana Balmori in 1977, the firm began its legacy as Cesar Pelli & Associates at its first office in New Haven, Connecticut.
Movers+Shapers | Nov 7, 2021
Passage of $1.2 trillion infrastructure bill expected to spur stronger construction activity
AEC firms see federal investment as historic
Architects | Nov 2, 2021
What rugby can teach us about designing the workspace of the future
Two veteran workplace designers offer a sports-based analogy for designing agile spaces to meet the needs of an evolving workforce.
Adaptive Reuse | Nov 1, 2021
CallisonRTKL explores converting decommissioned cruise ships for housing
The rapid increase in cruise ship decommissioning during the last 18 months has created a unique opportunity to innovate and adapt these large ships.