Other major cement producers have also been working on similar projects. HeidelbergCement has been working on a concept called ReConcrete-360 ˚ to reconstitute products from recycling concrete. The idea is to reuse demolition concrete by separating it into its components including sand, gravel, and hardened cement paste. ReConcrete-360˚ is then developed as a limestone substitute, which can also use carbon-containing exhaust gases from cement production to decarbonise the industry. Vicat has also carried out pioneering work in this field with the Secondary Raw Materials for Concrete ( SeRaMCO ) project in 2017-21. The programme upcycled inert waste from demolition sites before incorporating fines in the cement manufacturing process at the Créchy plant in France, while clinker was milled in Chambéry, France.