The Mitigation of CO2-emissions in the cement industry is becoming a must in most countries. One of the levers, the reduction of the clinker factor, is usually seen as impacting the cement quality. In addition, current supplementary cementitious materials like reactive fly ash and slag are currently limited to less than 20% of cement demand worldwide and this will decrease in the near future.

For the last five years our team from the Swiss École Polytechnique Fédérale de Lausanne (EPFL) has been working on a new cement called LC3 made of only 50% clinker content in cement plus a combination of calcined clay (30%) and limestone (15%).

LC3 is ready to be implemented and mentioned as a key technology to combat climate change and to be considered regarding frameworks.

In the following two pages, we show exemplary how LC3 contributes to achieving the Sustainable Development Goals (SDGs) and Nationally Determined Contributions (NDCs).