What is clinker?
Clinker is traditionally produced through the calcination of limestone, heating it to around 650 – 1050°C, whereby quarried limestone undergoes thermal decomposition to form clinker, the active ingredient in cement powder which give it its compressive strength
Building the new from the old
In 2021, Holcim reported that it recycled 54 million t of materials across its business and is doubling down on this rate to reach 100 million t by 2030. The company recycled 6.6 million t of construction and demolition waste in 2021 and are scaling up to recycle 10 million t by 2025. The production of 100% recycled clinker is a major step in the shift to circular construction, and Holcim is leading the change.
