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Author Topic: carbon eating concrete  (Read 1475 times)
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« on: January 13, 2009, 08:15:06 PM »

HI all

many will know the cement used in concrete has a huge carbon cost accounting for 5% of global industrial carbon output - more than aviation.

This is due to the crushing and high firing temperature to manufacture. this is slightly abated by absorption of carbon from the air during hardening but remains a big producer of carbon

Engineers at Imperial College have announced a new cement which maximises the mineral contant of carbon absorption constituents (mostly magnesium silicates). although still heavy for production the absorption is such that more carbon is absorbed than needed for manufacture and will actually help reduce airbourne carbon.

this is the type of engineering development we need. lets hope it proves successful and gets on stream quickly and is widely used  Cheesy.

cheers

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