Lowering emissions using calcined clay concrete

We recently poured the first calcined clay concrete on an Australian rail project.

Produced in the same way as cement, the clay requires only a fraction of the heat to produce it. Therefore, used as a substitute for 30% of the cement in concrete, it lowers greenhouse gas emissions by up to 50%. 

Additionally, the mix demonstrated workability and durability, confirming its suitability for large-scale infrastructure projects.

And the great thing is - there’s an extensive supply of suitable clay throughout Australia.

We used the calcined clay in a temporary site slab as a trial. It was a collaborative effort in partnership with the Low Carbon Concrete Working Group, the University of Melbourne, our customer (the Level Crossing Removal Project), Eifers Civil, and Heidelberg Materials.