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
University Buildings | May 19, 2015
Special Report: How your firm can help struggling colleges and universities meet their building project goals
Building Teams that want to succeed in the higher education market have to help their clients find new funding sources, control costs, and provide the maximum value for every dollar.
University Buildings | May 19, 2015
Renovate or build new: How to resolve the eternal question
With capital budgets strained, renovation may be an increasingly attractive money-saving option for many college and universities.
University Buildings | May 19, 2015
KU Jayhawks take a gander at a P3 development
The P3 concept is getting a tryout at the University of Kansas, where state funding for construction has fallen from 20% of project costs to about 11% over the last 10 years.
Multifamily Housing | May 19, 2015
Zaha Hadid unveils 'interlocking lattice' design for luxury apartments in Monterrey, Mexico
Hadid's scheme was inspired by the Mexican tradition of interlocking lattice geometries.
Retail Centers | May 18, 2015
ULI forecast sees clear skies for real estate over next three years
With asset availability declining in several sectors, rents and transactions should rise.
Architects | May 17, 2015
NCARB wants the title ‘architect’ confined to those who are licensed
The Council is urging state licensing boards to come up with a substitute for the pre-licensure title ‘Intern.’
Museums | May 13, 2015
The museum of tomorrow: 8 things to know about cultural institutions in today’s society
Entertainment-based experiences, personal journeys, and community engagement are among the key themes that cultural institutions must embrace to stay relevant, write Gensler's Diana Lee and Richard Jacob.
Industrial Facilities | May 11, 2015
SOM-designed Manufacturing and Design Innovation Institute opens in Chicago
The new space will be a place for academia, industries, and civic bodies to collaborate.
Sponsored | Roofing | May 11, 2015
How architects can tap into the expertise of their metal roof manufacturer, part 2
Here are three things metal roof manufacturers can do to help the architect
BIM and Information Technology | May 10, 2015
How beacons will change architecture
Indoor positioning is right around the corner. Here is why it matters.