A cement company has launched a new, more environmentally-friendly type of cement based on an old Roman recipe.
from Ellie NZ Rss http://www.stuff.co.nz/business/industries/88821832/New-cement-to-help-lower-carbon-emissions-from-concrete
from
https://ellieplume83.wordpress.com/2017/01/27/new-cement-to-help-lower-carbon-emissions-from-concrete/
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