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WEDNESDAY, NOVEMBER 25, 2009
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NEWS ABOUT: concrete

concrete stories: 3 news summaries

 Infected Concrete 
 Heals Self: Study 

Scientists create self-healing concrete

May 2, 09 2:17 AM CDT
(Newser) - Bacteria that secrete minerals are a well-known tool for "healing" cracked limestone statues, and the process got a Dutch scientist thinking. He theorized that concrete seeded with bacteria and a substance they transform into calcium carbonate would create a material that's able to seal cracks as they form. It... More »

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Netherlands • bacteria • engineering • scientific study • concrete • calcium carbonate • limestone

(Newser) - An elevated walkway under construction at Atlanta’s Botanical Garden collapsed today, killing a worker and injuring 18, the Journal-Constitution reports. Workers were pouring concrete for the 40-foot-high footbridge when the collapse set off a scene one EMT described as "sheer chaos." Those nearby described a “... More »

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Atlanta • construction • accident • bridge collapse • concrete • botanical garden • walkway

 Did the Egyptians
 Invent Concrete?

New theory on the Pyramids: 'less sweat and more smarts'

Apr 22, 08 1:25 PM CDT
(Newser) - The Egyptians may have used concrete to build the pyramids, an MIT professor suggests, and he's using materials available at the time (and students as his slave labor), to test the theory on a small mock-up of a pyramid, reports the Boston Globe. "It could be they used... More »

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Boston • MIT • Pyramids • ancient Egypt • concrete • Linn Hobbs

3 Stories


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