Word: ultra
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...concrete. Not the cheap, gray, easily cracked soulless stuff that gave urbanization a bad name when it was slathered over Western cities in the 1960s, but newfangled, bright--and still relatively expensive--concrete that has come on to the market this decade. High-performance concrete (or ultra-high-performance, as it's known in the industry) is up to 10 times as strong as regular concrete. It costs several times as much as standard concrete, yet industry experts say price comparisons are misleading because the high-tech versions have properties that make them more comparable to materials such as stainless...
...billion in 2007, Lafarge has set itself the goal by 2010 of cutting its net CO2 emissions for every ton of cement it produces to 20% below the 1990 level. But it is also steaming ahead with research efforts into smarter, stronger and less polluting products, including ultra-high-performance concrete. Research director Casanova traces the path of innovation back to the 1980s, when the first big gains were made in improving the resistance of concrete. In the two decades since, researchers have figured out how to increase that resistance by a factor of 10. "There's been a very...
...doesn't let in wind and water. Its density also means that it stores heat during the day and releases it at night, making it possible to save on air-conditioning and heating. Architects including Ferrier are playing with such possibilities as they design their new buildings. And the ultra-high-performance concretes can be put to surprising uses: in a showroom on the Lafarge campus, there's a table made of concrete that is so thin and elegant that from a distance it looks as though it could be made of marble...
...world's largest cement company, Lafarge has set itself a goal: by 2010, it will cut its net CO2 emissions for every ton of cement it produces to 20% below the 1990 level. But it is also steaming ahead with research into smarter, stronger and less polluting products, including ultra-high-performance concrete. Research director Casanova traces the path of innovation back to the 1980s, when the first big gains were made in increasing the resistance, or strength, of concrete. In the two decades since, researchers have figured out how to increase that resistance by a factor of 10. "There...
...insulates well because it doesn't let in wind and water. Its density also means it stores heat during the day and releases it at night, enabling savings on air conditioning and heating; architects including Ferrier are playing with such possibilities as they design their new buildings. And the ultra-high-performance concretes can be put to surprising uses: in a showroom on the Lafarge campus is a concrete table so thin and elegant that from a distance you might think it was made of marble...