News tagged with concrete
'BacillaFilla' for concrete cracks
A bacteria that can knit together cracks in concrete structures by producing a special 'glue' has been developed by a team of students at Newcastle University.
Nov 12, 2010 |
5 / 5 (23) |
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Self-healing concrete for safer, more durable infrastructure (w/Video)
(PhysOrg.com) -- A concrete material developed at the University of Michigan can heal itself when it cracks. No human intervention is necessary--just water and carbon dioxide.
Apr 22, 2009 |
4.5 / 5 (18) |
3
'Green' research results in new geopolymer concrete technology
Dr. Erez Allouche, assistant professor of civil engineering at Louisiana Tech University and associate director of the Trenchless Technology Center, is conducting innovative research on geopolymer concrete ...
Sep 29, 2009 |
4.3 / 5 (16) |
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MIT slows concrete creep to a crawl
MIT civil engineers have for the first time identified what causes the most frequently used building material on earth — concrete — to gradually deform, decreasing its durability and shortening the lifespan of infrastructures ...
Jun 16, 2009 |
4.9 / 5 (12) |
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Concrete experiment may eliminate storm drains
Shoreview, Minn., is betting on a new "green" concrete paving method that lets rainwater pass right through the street surface to prevent damaging runoff.
Jun 15, 2009 |
4.7 / 5 (12) |
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110-foot concrete bridge withstands 8.0 earthquake simulation (w/ Video)
After a succession of eight separate earthquake simulations, a 110-foot long, 200-ton concrete bridge model at the University of Nevada, Reno withstood a powerful jolting, three times the acceleration of the ...
Jun 16, 2010 |
5 / 5 (10) |
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Green Ideas: Making Concrete from Rice
(PhysOrg.com) -- Concrete accounts for about 5% of all human-related CO2 emissions. The fact that we use so much cement in building could mean that the issue becomes even more pronounced in the future. Bu ...
Jul 21, 2009 |
3.2 / 5 (14) |
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A full-sized California-style home made of bamboo
A new type of eco-friendly residential house made of bamboo now stands in Changsha, Hunan Province, China.
Apr 08, 2009 |
4.9 / 5 (9) |
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Recipe for success: Recycled glass and cement
(PhysOrg.com) -- Michigan State University researchers have found that by mixing ground waste glass into the cement that is used to make concrete, the concrete is stronger, more durable and more resistant ...
Feb 21, 2012 |
4.9 / 5 (8) |
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Scientists test blast-resistant concrete
Engineers at the University of Liverpool have tested a new form of concrete designed to reduce the impact of bomb blasts in public areas.
Jan 22, 2009 |
4.5 / 5 (8) |
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Want to convince? Use abstract rather than concrete language
When consumers talk to each other about products, they generally respond more favorably to abstract language than concrete descriptions, according to a new study in the Journal of Consumer Research.
Other Sciences / Social Sciences
Jan 19, 2010 |
4.4 / 5 (8) |
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New camera makes seeing the 'invisible' possible
(PhysOrg.com) -- The science similar to the type used in airport body scanners could soon be used to detect everything from defects in aerospace vehicles or concrete bridges to skin cancer, thanks to researchers ...
Mar 03, 2011 |
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Japan nuclear meltdown 'maybe worse than thought'
Molten nuclear fuel at Japan's Fukushima plant might have eaten two thirds of the way through a concrete containment base, its operator said, citing a new simulation of the extent of the March disaster.
Dec 01, 2011 |
5 / 5 (7) |
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Viscosity-Enhancing Nanomaterials May Double Service Life of Concrete
(PhysOrg.com) -- Engineers at the National Institute of Standards and Technology are patenting a method that is expected to double the service life of concrete. The key, according to a new paper*, is a nano-sized ...
Nanotechnology / Nanomaterials
Jan 28, 2009 |
5 / 5 (6) |
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Waste ash from coal could save billions in repairing US bridges and roads
Coating concrete destined to rebuild America's crumbling bridges and roadways with some of the millions of tons of ash left over from burning coal could extend the life of those structures by decades, saving billions of dollars ...
Mar 29, 2011 |
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Concrete
Concrete is a construction material composed of cement (commonly Portland cement) as well as other cementitious materials such as fly ash and slag cement, aggregate (generally a coarse aggregate such as gravel, limestone, or granite, plus a fine aggregate such as sand), water, and chemical admixtures. The word concrete comes from the Latin word "concretus" (meaning compact or condensed), the past participle of "concresco", from "com-" (together) and "cresco" (to grow).
Concrete solidifies and hardens after mixing with water and placement due to a chemical process known as hydration. The water reacts with the cement, which bonds the other components together, eventually creating a stone-like material. Concrete is used to make pavements, architectural structures, foundations, motorways/roads, bridges/overpasses, parking structures, brick/block walls and footings for gates, fences and poles.
Concrete is used more than any other man-made material in the world. As of 2006, about 7.5 cubic kilometres of concrete are made each year—more than one cubic metre for every person on Earth. Concrete powers a US $35-billion industry which employs more than two million workers in the United States alone.[citation needed] More than 55,000 miles (89,000 km) of highways in the United States are paved with this material. Reinforced concrete and prestressed concrete are the most widely used modern kinds of concrete functional extensions.
For more information about Concrete, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
