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
Reconstruction & Renovation | Mar 28, 2022
Is your firm a reconstruction sector giant?
Is your firm active in the U.S. building reconstruction, renovation, historic preservation, and adaptive reuse markets? We invite you to participate in BD+C's inaugural Reconstruction Market Research Report.
Legislation | Mar 28, 2022
LEED Platinum office tower faces millions in fines due to New York’s Local Law 97
One Bryant Park, also known as the Bank of America Tower, in Manhattan faces an estimated $2.4 million in annual fines when New York City’s York’s Local Law 97 goes into effect.
Healthcare Facilities | Mar 25, 2022
Health group converts bank building to drive-thru clinic
Edward-Elmhurst Health and JTS Architects had to get creative when turning an American Chartered Bank into a drive-thru clinic for outpatient testing and vaccinations.
Higher Education | Mar 24, 2022
Higher education sector sees 19 percent reduction in facilities investments
Colleges and universities face a growing backlog of capital needs and funding shortfalls, according to Gordian’s 2022 State of Facilities in Higher Education report.
Architects | Mar 16, 2022
James Hoban: Designer and builder of the White House
Stewart D. McLaurin, President of the White House Historical Association, chats with BD+C Executive Editor Robert Cassidy about James Hoban, the Irish draftsman and builder who convinced George Washington to let him design and build the White House.
Architects | Mar 16, 2022
Diébédo Francis Kéré named 2022 Pritzker Architecture Prize recipient
Diébédo Francis Kéré, architect, educator and social activist, has been selected as the 2022 Laureate of the Pritzker Architecture Prize, announced Tom Pritzker, Chairman of The Hyatt Foundation, which sponsors the award that is regarded internationally as architecture’s highest honor.
Architects | Mar 10, 2022
Gyo Obata, FAIA, HOK Founding Partner, passes away at 99
Obata's career spanned six decades and included iconic projects like the National Air and Space Museum in Washington, D.C., and Community of Christ Temple in Independence, Mo.
AEC Tech Innovation | Mar 9, 2022
Meet Emerge: WSP USA's new AEC tech incubator
Pooja Jain, WSP’s VP-Strategic Innovation, discusses the pilot programs her firm’s new incubator, Emerge, has initiated with four tech startup companies. Jain speaks with BD+C's John Caulfield about the four AEC tech firms to join Cohort 1 of the firm’s incubator.
Architects | Mar 2, 2022
FGM Architects and LeMay Erickson Willcox Architects join forces
FGM Architects announced that LeMay Erickson Wilcox Architects, a 19-person architectural studio based in Reston, VA is joining their firm.
Architects | Mar 1, 2022
Alyson Steele Elected President and CEO of Quinn Evans
(2.25.22) Alyson Steele, FAIA, LEED AP, has been elected president and chief executive officer of Quinn Evans, a nationally recognized firm providing architecture, planning, interior design, landscape architecture, and historic preservation services. Steele has been with the firm since 1997 and previously served as executive vice president and chief design officer. She succeeds Larry Barr, FAIA, who will continue to serve on the board of directors.