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Technology Description

Traditionally, industrial by-products such as coal fly ash have been used as pozzolans to reduce the amount of clinker in cement making, but the decarbonisation of the power sector will likely lead to a reduction in the amount of fly ash available. Absent other supplementary cementitious materials, the clinker-to-cement ratio will need to increase, and emissions with it. Alternatives to traditional supplementary cementitious materials can be developed to avoid a rise in emissions from clinker.

Relevance for Net Zero

High abatement potential.

Key Countries

United States, Canada

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