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DateDate: 21-05-2019, 06:46
Traditional cement production accounts for about 8% of global carbon emissions. Since it is still impossible to do without cement, a team of geologists from the Martin Luther University decided to create an ecological alternative to it from industrial waste. This writes the Eurek Alert.
The main raw material for cement is limestone, which is heated in large kilns. At the same time, about one ton of carbon dioxide is emitted from each ton of limestone. Scientists propose to replace this material with waste from the production of kaolin and aluminum.
"This is industrial waste, which can still be used very efficiently, just for the production of alternative forms of cement," says geologist Herbert Pelmann. The study showed that "green" cement will have all the useful properties of the usual, but it will not emit greenhouse gases.