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
Codes and Standards | Apr 8, 2024
Boston’s plans to hold back rising seawater stall amid real estate slowdown
Boston has placed significant aspects of its plan to protect the city from rising sea levels on the actions of private developers. Amid a post-Covid commercial development slump, though, efforts to build protective infrastructure have stalled.
Sustainability | Apr 8, 2024
3 sustainable design decisions to make early
In her experience as an architect, Megan Valentine AIA, LEED AP, NCARB, WELL AP, Fitwel, Director of Sustainability, KTGY has found three impactful sustainable design decisions: site selection, massing and orientation, and proper window-to-wall ratios.
Brick and Masonry | Apr 4, 2024
Best in brick buildings: 9 projects take top honors in the Brick in Architecture Awards
The Ace Hotel Toronto, designed by Shim-Sutcliffe Architects, and the TCU Music Center by Bora Architecture & Interiors are among nine "Best in Class" winners and 44 overall winners in the Brick Industry Association's 2023 Brick in Architecture Awards.
Retail Centers | Apr 4, 2024
Retail design trends: Consumers are looking for wellness in where they shop
Consumers are making lifestyle choices with wellness in mind, which ignites in them a feeling of purpose and a sense of motivation. That’s the conclusion that the architecture and design firm MG2 draws from a survey of 1,182 U.S. adult consumers the firm conducted last December about retail design and what consumers want in healthier shopping experiences.
Healthcare Facilities | Apr 3, 2024
Foster + Partners, CannonDesign unveil design for Mayo Clinic campus expansion
A redesign of the Mayo Clinic’s downtown campus in Rochester, Minn., centers around two new clinical high-rise buildings. The two nine-story structures will reach a height of 221 feet, with the potential to expand to 420 feet.
Sports and Recreational Facilities | Apr 2, 2024
How university rec centers are evolving to support wellbeing
In a LinkedIn Live, Recreation & Wellbeing’s Sadat Khan and Abby Diehl joined HOK architect Emily Ostertag to discuss the growing trend to design and program rec centers to support mental wellbeing and holistic health.
Architects | Apr 2, 2024
AE Works announces strategic acquisition of WTW Architects
AE Works, an award-winning building design and consulting firm is excited to announce that WTW Architects, a national leader in higher education design, has joined the firm.
Office Buildings | Apr 2, 2024
SOM designs pleated façade for Star River Headquarters for optimal daylighting and views
In Guangzhou, China, Skidmore, Owings & Merrill (SOM) has designed the recently completed Star River Headquarters to minimize embodied carbon, reduce energy consumption, and create a healthy work environment. The 48-story tower is located in the business district on Guangzhou’s Pazhou Island.
K-12 Schools | Apr 1, 2024
High school includes YMCA to share facilities and connect with the broader community
In Omaha, Neb., a public high school and a YMCA come together in one facility, connecting the school with the broader community. The 285,000-sf Westview High School, programmed and designed by the team of Perkins&Will and architect of record BCDM Architects, has its own athletic facilities but shares a pool, weight room, and more with the 30,000-sf YMCA.
Market Data | Apr 1, 2024
Nonresidential construction spending dips 1.0% in February, reaches $1.179 trillion
National nonresidential construction spending declined 1.0% in February, according to an Associated Builders and Contractors analysis of data published today by the U.S. Census Bureau. On a seasonally adjusted annualized basis, nonresidential spending totaled $1.179 trillion.