A new kind of concrete could reduce emissions from the construction industry. Calcium carbonate concrete is made from waste concrete and carbon dioxide from the air or industrial exhaust gases. It shows promise as a future construction material, especially in places where natural resources are limited.
The modern world is built from concrete. Every tall building in every city on Earth uses the durable and versatile material to give it shape and strength.
The concrete industry therefore is enormous, and this comes at a cost: It is estimated that around 7 percent of the world’s carbon dioxide emissions come from the manufacture and use of cement, the main component of concrete. And a large proportion of this 7 percent is due to the necessary use of calcium, which is usually obtained by burning limestone. [Read more…] about A concrete solution: Recycled concrete and CO2 from the air are made into a new building material
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