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
| Aug 22, 2022
Less bad is no longer good enough
As we enter the next phase of our fight against climate change, I am cautiously optimistic about our sustainable future and the design industry’s ability to affect what the American Institute of Architects (AIA) calls the biggest challenge of our generation.
Giants 400 | Aug 21, 2022
Top 110 Architecture/Engineering Firms for 2022
Stantec, HDR, HOK, and Skidmore, Owings & Merrill top the rankings of the nation's largest architecture engineering (AE) firms for nonresidential and multifamily buildings work, as reported in Building Design+Construction's 2022 Giants 400 Report.
Giants 400 | Aug 20, 2022
Top 180 Architecture Firms for 2022
Gensler, Perkins and Will, HKS, and Perkins Eastman top the rankings of the nation's largest architecture firms for nonresidential and multifamily buildings work, as reported in Building Design+Construction's 2022 Giants 400 Report.
Giants 400 | Aug 19, 2022
2022 Giants 400 Report: Tracking the nation's largest architecture, engineering, and construction firms
Now 46 years running, Building Design+Construction's 2022 Giants 400 Report rankings the largest architecture, engineering, and construction firms in the U.S. This year a record 519 AEC firms participated in BD+C's Giants 400 report. The final report includes more than 130 rankings across 25 building sectors and specialty categories.
| Aug 19, 2022
Cuningham appoints Jacqueline Dompe as new Chief Executive Officer
Cuningham, a national design firm, is thrilled to announce the appointment of Jacqueline Dompe as the firm’s Chief Executive Officer (CEO).
| Aug 19, 2022
Future sea rise could expose 720,000 more people on East Coast to flooding
An analysis by NPR based on modeling from the National Hurricane Center for New York City, Washington, D.C., and Miami-Dade County found future sea rise could expose about 720,000 more people to damaging floods later this century.
| Aug 19, 2022
Manassas Museum renovated to reimagine a civic design & engage the community
Manassas, VA has recently added to its historic Manassas Museum.
Architects | Aug 18, 2022
GSA names Charles Hardy, AIA, CCM, Chief Architect at GSA Public Buildings Service
The U.S. General Services Administration (GSA) has named Charles (Chuck) Hardy as GSA’s next Chief Architect, effective August 14, 2022. A licensed architect, workplace strategist, and certified construction manager, Hardy’s career with GSA spans more than 31 years, beginning in GSA’s Great Lakes Region as an architect and project manager.
| Aug 18, 2022
U.S. Treasury moves to boost affordable housing
The Department of the Treasury recently announced new guidance to “increase the ability of state, local, and tribal governments to use American Rescue Plan (ARP) funds to boost the supply of affordable housing in their communities,” according to a news release.
Daylighting | Aug 18, 2022
Lisa Heschong on 'Thermal and Visual Delight in Architecture'
Lisa Heschong, FIES, discusses her books, "Thermal Delight in Architecture" and "Visual Delight in Architecture," with BD+C's Rob Cassidy.