Replacing clinker with industrial byproducts
Replacing the clinker in our final cement products with alternative mineral components reduces the carbon intensity of the cement. Our operations use the byproducts of other industrial processes, such as fly ash from the power industry and blast furnace slag from the iron and steel industry, to replace clinker in the final cement product. We do this where it is geographically and economically feasible and where these materials are available.
Co-processing is a form of waste management that recovers the energy and recycles mineral content from waste such as spent solvents, used tires, waste oils, contaminated soils, industrial and sewage sludges and demolition material.
Sustainable construction and solutions
We have developed a range of sustainable solutions, which in 2018 represented 11 percent of net sales. However, virgin aggregates are too cheap and the general perception of recycled concrete is poor. Another big hurdle is the lack of standards covering the recycling of concrete.