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Headline

Concrete: do architects have their heads in the sand?

Comment

The technology exists to make the cement manufacture process much cleaner in terms of CO2 production - it is called the Calcium Carbonate Looping process (CCL). This can isolate CO2 from exhaust gasses from the clinker production etc. and can even be organised that the waste product of the process is in fact the raw material of cement. It uses existing proven technology (fluidised bed systems) and is exothermic (i.e. it vastly reduces energy costs). Just needs the industry to invest, perhaps take slightly smaller profits, and do their bit to save the planet. There are a whole series of "carbonate looping" processes that have massive potential for future clean energy systems (e.g. thermite reactions). Effectively heat produced without exhaust gas...

Posted date

16 January, 2019

Posted time

11:00 am

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