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
| Aug 18, 2014
SPARK’s newly unveiled mixed-use development references China's flowing hillscape
Architecture firm SPARK recently finished a design for a new development in Shenzhen. The 770,700 square-foot mixed-use structure's design mimics the hilly landscape of the site's locale.
| Aug 18, 2014
Seaside luxury: Arquitectonica, Melo Group introduce Aria on the Bay condo tower in Miami
Melo Group has launched sales for Aria on the Bay, its new 647-unit luxury condominium in Miami. The bayfront condo will overlook Margaret Pace Park, Biscayne Bay and the Miami Beach skyline.
Sponsored | | Aug 16, 2014
Fire-rated framing system makes the grade at Johnson & Wales University Center
The precision engineering of TGP’s Fireframes Aluminum Series creates narrow profiles and crisp sightlines at Johnson & Wales University Center for Physician Assistant Studies
| Aug 16, 2014
Decoupling the professional services firm
Business consultant Tim Williams authored a recent LinkedIn post that highlights the emerging trend among professional services firms toward “decoupling,” or consciously separating the high-value services that are scarce from the low-value services that are plentiful. SPONSORED CONTENT
| Aug 16, 2014
The science of learning: Designing the STEM learning facilities of the future
New technology and changing pedagogies are influencing how to best teach a generation of learners who have never known a world without smartphones or tablets, writes HOK's Kimberly Robidoux.
| Aug 16, 2014
Calatrava in hot water again? Famed architect charged to appear in court in Spanish construction case
The Valencia High Court has requested documents detailing how Calatrava was hired in private, without any publicity, for a convention center project in Castellon. For contracts over a certain minimum value, that is illegal in Spain.
| Aug 15, 2014
First look: RMJM’s 'jumping fish' tower design for the Chinese Riviera
The tower's fish-jumping gesture is meant to symbolize the prosperity and rapid transformation of Zhuhai, China.
| Aug 15, 2014
Periscope structure gives public toilet an unobstructed sea view
Polish architect Adam Wiercinski designs a public toilet with a periscope mechanism that gives visitors unobstructed views of the sea.
| Aug 14, 2014
8 do's and don'ts for completing an HVAC life cycle cost assessment
There are many hurdles to overcome when completing a life cycle cost assessment. RMF Engineering’s Seth Spangler offers some words of advice regarding LCCAs.
| Aug 14, 2014
Life cycle cost analysis using energy modeling
A life cycle cost analysis helps a school district decide which HVAC system to use in $198 million worth of future building projects.