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- 2022-10-17
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1st:cement is the most widely used substance and the most polluting particle. Both during the way it was made and the reaction it releases, it contributes to global warming. By the industry's own admission, cement-making accounts for 5% of the world's emission.
2nd: the European union has restricted emissions from kilns and other jurisdictions may follow. Even the biggest cement firm joined an sustainability initiative ( heading off further regulation), the increasing demand made it hard to improve worldwide situation.
3rd: the three biggest firms have pledged to cut the emission.
4th: how they cut emission from three way: making kilns more efficient, lessen the energy the cement making needs; change fuel fuels; mixing more additives.
5th: but all three tactics have limitation. Few improvement can be done; substitution fuel may release noxious chemicals; building code has additives restraints.
6th: the demanding increase fast. And the cement firms are emerging.
7th: it's impossible to change how cement making, and they want to capture releasing carbon dioxide. And provides more sparingly choice. Doing something in construction may lessen the usage of cement.
8th: at the end of day, we still need to find out a substitution of cement. |
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