Clinker is a major component of cement, which is a major component of concrete. Which means the production of clinker, globally, is huge.
But currently, clinker production releases very large amounts of carbon dioxide.
I know Stuart Licht's group at George Washington University, and others, have been looking at alternative production methods for clinker that would decarbonise the production of cement and concrete; others are looking at substitutes for clinker.
What are the most promising routes for decarbonising this sector, in terms of preserving the best qualities of cement and concrete as much as possible, including the economics and scalability?