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
Sustainable Development | Jul 14, 2022
Designing for climate change and inclusion, with CBT Architects' Kishore Varanasi and Devanshi Purohit
Climate change is having a dramatic impact on urban design, in terms of planning, materials, occupant use, location, and the long-term effect of buildings on the environment. Joining BD+C's John Caulfield to discuss this topic are two experts from the Boston-based CBT Architects: Kishore Varanasi, a Principal and director of urban design; and Devanshi Purohit, an Associate Principal.
Multifamily Housing | Jul 14, 2022
Multifamily rents rise again in June, Yardi Matrix reports
Average U.S. multifamily rents rose another $19 in June to edge over $1,700 for the first time ever, according to the latest Yardi® Matrix Multifamily Report.
Building Team | Jul 14, 2022
Austin PBS gets a new state-of-the-art facility with three studios
Since the 1970s, Austin PBS, birthplace of the Austin City Limits TV series, has been based inside the communications building on the University of Texas campus—a space it has long outgrown.
Building Team | Jul 13, 2022
The YIMBY movement emerges as valuable advocate for affordable housing
Over the past few decades, developers grew accustomed to nothing but staunch opposition to dense affordable housing project proposals.
Energy | Jul 13, 2022
Electrification of buildings, new and old, furthers environmental responsibility and equity
It’s almost a cliché in our industry, but nonetheless: The greenest building is the one that is already built.
Building Team | Jul 13, 2022
Austin’s newest entertainment and hospitality complex has been made from repurposed shipping containers
A new entertainment and hospitality complex in Austin, The Pitch, has been made out of repurposed shipping containers.
Codes and Standards | Jul 12, 2022
USGBC sets out principles for LEED’s future
The U.S. Green Building Council recently published a report containing principles outlining how LEED will evolve.
Building Team | Jul 12, 2022
10 resource reduction measures for more efficient and sustainable biopharma facilities
Resource reduction measures are solutions that can lead to lifecycle energy and cost savings for a favorable return on investment while simultaneously improving resiliency and promoting health and wellness in your facility.
Office Buildings | Jul 12, 2022
Miami office tower nears completion, topping off at 55 stories
In Miami, construction of OKO Group and Cain International’s 830 Brickell office tower is nearing completion.
University Buildings | Jul 11, 2022
Student life design impacts campus wellness
As interior designers, we have the opportunity and responsibility to help students achieve deeper levels of engagement in their learning, social involvement, and personal growth on college campuses.
