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Key strategies to cut carbon emissions in cement production include improving energy efficiency, switching to lower-carbon fuels, promoting material efficiency (to reduce the clinker-to-cement ratio and total demand), and advancing innovative near zero emission production routes.
The clinker-to-cement ratio (percentage of clinker compared to other non-clinker components) has an impact on the properties of cement so standards determine the type and proportion of alternative main constituents that can be used.
Clinker, and clinker substitutes, are the active components that confer cement its binding properties. Producing traditional cement clinker is an extremely energy and CO2 intensive process. In the EU, 90% of clinker is now made via the more energy efficient dry clinker-making process (2).
30 de sept. de 2022 · For example, the average European cement contains a clinker-to-cement mass ratio of ~0.75 32,33 and the average cement in the United Kingdom contains ~20 mass% coal fly ash and granulated...
26 de sept. de 2023 · Cement. Cutting emissions from cement production is difficult due to the present reliance on carbon-containing raw materials and high-temperature heating requirements. Energy and material efficiency and low-emissions fuels are key measures in the near term.
Reduce emissions intensity of clinker production by: – Increasing fuel substitution with biomass and renewable waste274 – Reducing thermal energy consumption through efficiency improvements – Substituting clinker with supplementary cementitious materials (SCMs) and reducing the clinker-cement ratio.275 Next generation assets
1 de feb. de 2024 · The average clinker-to-cement ratio in the EU in 2017 was 77%, and Europe currently consumes Portland cement. The use of other low clinker-to-cement ratios can further reduce carbon emissions. ECA aims to decrease the average proportion of cement clinker from 77% to 65% by 2050.
