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
Healthcare Facilities | Feb 21, 2023
Cleveland's Glick Center hospital anchors neighborhood revitalization
The newly opened MetroHealth Glick Center in Cleveland, a replacement acute care hospital for MetroHealth, is the centerpiece of a neighborhood revitalization. The eleven-story structure is located within a ‘hospital-in-a-park’ setting that will provide a bucolic space to the community where public green space is lacking. It will connect patients, visitors, and staff to the emotional and physical benefits of nature.
Multifamily Housing | Feb 21, 2023
Multifamily housing investors favoring properties in the Sun Belt
Multifamily housing investors are gravitating toward Sun Belt markets with strong job and population growth, according to new research from Yardi Matrix. Despite a sharp second-half slowdown, last year’s nationwide $187 billion transaction volume was the second-highest annual total ever.
Multifamily Housing | Feb 21, 2023
New multifamily housing and mixed-use buildings in Portland, Ore., must be ready for electric vehicle charging
The Portland, Ore., City Council recently voted unanimously to require all new residential and mixed-use buildings to be ready for electric vehicle charging. The move amends Portland’s zoning laws to require all new multi-dwelling and mixed-use development of five or more units with onsite parking to provide electric vehicle charging infrastructure.
K-12 Schools | Feb 18, 2023
Atlanta suburb opens $85 million serpentine-shaped high school designed by Perkins&Will
In Ellenwood, Ga., a southeast suburb of Atlanta, Perkins and Will has partnered with Clayton County Public Schools and MEJA Construction to create a $85 million secondary school. Morrow High School, which opened in fall 2022, serves more than 2,200 students in Clayton County, a community with students from over 30 countries.
Museums | Feb 17, 2023
First Americans Museum uses design metaphors of natural elements to honor native worldview
First Americans Museum (FAM) in Oklahoma City honors the 39 tribes in Oklahoma today, reflecting their history through design metaphors of nature’s elements of earth, wind, water, and fire. The design concept includes multiple circles suggested by arcs, reflecting the native tradition of a circular worldview that encompasses the cycle of life, the seasons, and the rotation of the earth.
Architects | Feb 17, 2023
Architect of the Capitol fired by President Biden after strong bipartisan criticism
Architect of the Capitol J. Brett Blanton was let go this week following alleged abuse of authority, misuse of government property, and wasted taxpayer money.
High-rise Construction | Feb 15, 2023
Bjarke Ingels' 'leaning towers' concept wins Qianhai Prisma Towers design competition
A pair of sloped high-rises—a 300-meter residential tower and a 250-meter office tower—highlight the Qianhai Prisma Towers development in Qianhai, Shenzhen, China. BIG recently won the design competition for the project.
Senior Living Design | Feb 15, 2023
Passive House affordable senior housing project opens in Boston
Work on Phase Three C of The Anne M. Lynch Homes at Old Colony, a 55-apartment midrise building in Boston that stands out for its use of Passive House design principles, was recently completed. Designed by The Architectural Team (TAT), the four-story structure was informed throughout by Passive House principles and standards.
Designers | Feb 13, 2023
Hoffmann Architects + Engineers Establishes Diversity Advancement Scholarship Fund
Hoffmann Architects + Engineers, a design firm specializing in the rehabilitation of building exteriors, contributed $25,000 to fund the Hoffmann Diversity Advancement Scholarship, administered through the Connecticut Architecture Foundation. The fund provides scholarships for students from underrepresented racial or ethnic groups who are seeking degrees in architecture or engineering.
Office Buildings | Feb 12, 2023
Smyrna Ready Mix’s new office HQ mimics the patterns in the company’s onsite stone quarry
Designed by EOA Architects to showcase various concrete processes and applications, Smyrna Ready Mix's new office headquarters features vertical layering that mimics the patterns in the company’s stone quarry, located on the opposite end of the campus site. The building’s glass and concrete bands are meant to mirror the quarry’s natural contours and striations.