Sustainable Production and Environmental Impact of Cement

Cement underpins modern infrastructure but ranks among the largest industrial sources of carbon dioxide and other environmental burdens. Traditional clinker‐based manufacture involves calcination of limestone and combustion of fossil fuels, leading to process and energy‐related CO₂ emissions that account for approximately 7 %–8 % of global anthropogenic emissions. Sustainable production strategies focus on reducing the clinker content, improving kiln and process efficiency, adopting alternative fuels such as biomass and waste‐derived residues, and deploying carbon capture and storage (CCS). Life cycle assessment (LCA) methodologies reveal that combinations of clinker substitution, fuel switching and technological upgrades can cut emissions by over half by mid‐century, while advanced CCS offers a route towards near‐neutral operations. Beyond climate impacts, the sector faces challenges in raw material depletion, land use and particulate emissions. The global scale of cement demand—driven by urbanisation and emerging economies—renders decarbonisation both a technical and policy imperative. Progress hinges on integrated industrial measures, supportive regulatory frameworks and cross‐sectoral cooperation to ensure that low‐carbon cement technologies are economically viable, scalable and environmentally beneficial over their full life cycle.

Research from Nature Portfolio

Recent studies have quantified the climate mitigation potential of diverse decarbonisation pathways in mature markets. One assessment of European cement plants evaluated fifteen technological and material strategies, demonstrating that individual measures—such as fuel substitution and process optimisation—can reduce climate impacts per tonne of clinker by up to 30 %, while an integrated portfolio of improvements could achieve around 50 % emission reduction by 2050. Only rapid, large-scale deployment of CCS approaches could approach full climate neutrality, although trade-offs with other environmental indicators must be managed. Another global analysis employed bottom-up accounting to project cement CO₂ emissions in developing countries outside China, finding that emissions could rise to 1.4–3.8 Gt by mid-century under varying industrialisation trajectories. The study identifies that an optimal combination of low-carbon measures—tailored to regional infrastructure scenarios—could reduce annual emissions by roughly 65 % in 2050 and nearly halve cumulative emissions over 2020–2050, highlighting the importance of context-specific technological pathways.

Sustainable Production and Environmental Impact of Cement publication trend

The graph below shows the total number of articles in sustainable production and environmental impact of cement across all publications each year (not limited to Nature Index journals).

Technical terms

Clinker: The hydraulic precursor formed by heating a mixture of limestone and clay in a cement kiln, which is then ground to produce cement.

Clinker substitution: The replacement of a proportion of clinker with supplementary cementitious materials (such as fly ash or slag) to reduce energy use and emissions.

Alternative fuels: Non-conventional kiln fuels—including biomass, refuse‐derived fuel or industrial by-products—used to lower the carbon intensity of cement production.

Carbon capture and storage (CCS): A suite of technologies that capture CO₂ emissions from the cement process and transport them to secure underground geological formations.

Life cycle assessment (LCA): A systematic approach for quantifying environmental impacts of a product or process from raw material acquisition through end of life.

References

1. Paving the way for sustainable decarbonization of the European cement industry. Nature Sustainability (2024).
2. Projecting future carbon emissions from cement production in developing countries. Nature Communications (2023).
3. Prospective life cycle assessment of European cement production. Resources Conservation and Recycling (2023).
4. Literature review on policies to mitigate GHG emissions for cement and concrete. Resources Conservation and Recycling (2022).
5. Can Portland cement be replaced by low-carbon alternative materials? A study on the thermal properties and carbon emissions of innovative cements. Journal of Cleaner Production (2018).