The formula makes the new type of cement reduce the amount of CO2

In order to reduce the amount of carbon dioxide (CO ₂ ) released into the environment during cement production, scientists at the Massachusetts Institute of Technology (MIT) have developed a new formulation of cement. the ratio between material components.

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Normally, cement production requires the burning of limestone and clay at about 1,500 ° C. Energy used to heat the mixture in and the chemical reaction with CO ₂ emissions, a process which scientists believed to contribute about 5-10% of total greenhouse gas emissions of the industry.

After reviewing the process of cement manufacturing, a team led by Roland Pellenq found that reducing the ratio of calcium to silica-rich clay could significantly reduce CO ₂ emissions. Today, the proportion of lime to silica can range from 1.2 to 2.2, although 1.7 is considered the standard in cement production. But when comparing the chemical composition, the researchers identified 1.5 as the optimal ratio.

This small change in lime content can reduce CO ₂ emissions by up to 60%. In addition, new mixtures have been shown to be twice as likely to break than normal cement.

At this point, scientists will have to undertake a more in-depth study to ensure that new methods of cement production can be applied to the engineering process. Pellenq says new cement will be a useful solution for the oil and gas industry, helping to prevent pipeline leakage and cracking.

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