Eco-friendly cement made from burnt clay

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The manufacture of cement has a very large carbon footprint. Huge amounts of fuel are used to heat limestone — the raw material — at 1450 degrees, producing tons of CO2. We have a seen a number of greener building solutions, such as the a building block that is carbon negative, and an eco-friendly brick, which is made from industrial waste. Now, researchers at SINTEF have developed another solution using impure clay to make a more eco-friendly material. The burnt clay cement is made from Norwegian blue clay, which consists of a mixture of crystalline quartz and the minerals kaolin,…

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