The European Green Deal is targeting to “decarbonise and modernise” energy intensive industries including the cement sector. As a major contributor to climate change, the cement industry is responsible for approx. 7% of all global anthropogenic emissions and 18% of the emissions covered by the EU Emissions Trading Scheme. Since more than half of the materials that humans use on earth are “cementitious” – including concrete, cement and other building materials – it is currently difficult to imagine a life without cement. On the contrary, an increasing use can be expected. Therefore, the need for sustainable pathways in the production of such materials is growing.