green cement Archives – The Green Optimistic

MIT Researchers Cook Up Eco-Friendly Cement

Mila Luleva — Mon, 29 Sep 2014 10:39:21 +0000

Researchers from the MIT claim to have found the way to reduce greenhouse gas emissions from one of the most polluting processes- that of making cement. The team did not introduce any new ingredients. Instead, they only tweaked the ratio between calcium and silica-rich clay. Cement is one of the core ingredients in the making […]

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Biostone: Greener Cement Made from Sand, Bacteria and Urine

Mila Luleva — Thu, 13 Feb 2014 13:10:21 +0000

It is a commonly known fact that production of cement is a process, which can cause severe damage to the environment, mainly due to the large amount of carbon dioxide that is released in the atmosphere by the factories. Not long ago, we told you about ‘slag‘, the green cement, which is produced without any […]

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Drexel Scientists Invent Greener Alkali-Activated Cement

Ovidiu Sandru — Fri, 24 Feb 2012 01:14:21 +0000

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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New Cement Production Technology Absorbs Carbon Dioxide, Receives Award

Ovidiu Sandru — Fri, 18 Feb 2011 19:50:28 +0000

Cement is one of the most important CO2 emitters, accounting for 5% of the world's total emissions. Producing 1 ton of Portland cement, for example, outputs 800 kilograms of carbon dioxide, and that is because of the material used in the fabrication process: calcium carbonate.

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Rice Husks Making Cement Become Less Of a Polluter

Ovidiu Sandru — Wed, 14 Apr 2010 13:03:27 +0000

Cement is made by heating limestone with clay at high temperatures, and is responsible for 5 percent of the global carbon dioxide emissions, with a ton of CO2 released for every ton of cement produced. To reduce that figure, a team of researchers from the University of Dundee in UK, developed an environmentally-friendly cement made of waste organic materials, such as rice husks.

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