alkali activated cement Archives – The Green Optimistic green tech news, since 2008 Fri, 24 Feb 2012 01:14:21 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Drexel Scientists Invent Greener Alkali-Activated Cement https://www.greenoptimistic.com/drexel-alkali-activated-cement-20120224/ https://www.greenoptimistic.com/drexel-alkali-activated-cement-20120224/#respond Fri, 24 Feb 2012 01:14:21 +0000 https://www.greenoptimistic.com/?p=22833 Although it’s being used since the late 1800s, the Portland cement (OPC) is guilty for a large amount of carbon dioxide spewed in the atmosphere by its manuacturers. The latest recipe comes from Drexel and uses an industrial byproduct to make the cement greener. The byproduct is called slag. It and limestone, a common mineral, […]

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