This concrete can trap CO2 emissions forever

Subject: This concrete can trap CO2 emissions forever Thu Jun 21, 2018 3:41 am

Concrete is the most abundant man-made material on earth. There's a good chance you're standing on it right now, and it's holding up the buildings around you.

This concrete can trap CO2 emissions forever 180531172158-concrete-mission-ahead-1-780x439

But concrete has an emissions problem. Its essential ingredient, cement, has a huge carbon footprint.
Cement is the glue that makes concrete strong, but the process of making cement requires superheating calcium carbonate, or limestone, and releases massive amounts of carbon dioxide into the atmosphere.
Cement is responsible for 7% of global man-made greenhouse emissions, making it the world's second largest industrial source of carbon dioxide, according to the International Energy Agency. Data from the United States Geological Survey -- the scientific agency of the US government -- reveals that global cement production was responsible for about 4 billion pounds of CO2 emissions in 2017 alone.
But a Canadian startup has invented a new system for making concrete that traps CO2 emissions forever and at the same time reduces the need for cement.
CarbonCure's system takes captured CO2 and injects it into concrete as it's being mixed. Once the concrete hardens, that carbon is sequestered forever. Even if the building is torn down, the carbon stays put. That's because it reacts with the concrete and becomes a mineral.

http://money.cnn.com/2018/06/12/technology/concrete-carboncure/index.html

This concrete can trap CO2 emissions forever

Concrete is the most abundant man-made material on earth. There's a good chance you're standing on it right now, and it's holding up the buildings around you.

This concrete can trap CO2 emissions forever

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