A team of researchers at Norway's SINTEF organization recently developed an eco-friendly cement that can serve as an alternative to limestone. One of the problems with using cement as a building material is that a significant amount of fuel is required to heat the limestone. In order to cut down on the carbon footprint associated with the production of cement, SINTEF has come up with a clever alternative.
The eco-friendly cement developed by the SINTEF researchers is made from bunt clay instead of limestone. The team specifically selected Norwegian blue clay because it is comprised of materials such as crystalline quartz, kaolin, smectite and illite -- all of which are less reactive than other types of clay. As a result, the material produced far less CO2 without compromising the material's strength in the process.
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