The Vinci group undertakes to use 90% low carbon concrete in 2030

Batirama.com 03/06/20210

The French BTP giant Vinci undertakes to implement 90% low carbon concrete in its constructions in 2030, and plans to reduce its CO2 emissions by 40% by 2030.

"Vinci Construction has the ambition to develop the use of these concretes for the realization of all types of works, buildings as infrastructure, and undertakes to generalize their employment on its own projects during the decade," saidThe construction group in a press release.

"This is a very ambitious objective," said Vinci Construction Pierre Anjolras president, adding that this concrete had already been used on a site in Roissy, where the group has "reached 88% of the use of low carbon concrete".

Crucial ingredient of concrete, cement production remains a polluting process, requiring the heating of limestone and clay at very high temperature to create "clinker", basic cement and main source of CO2 emission by reactionchemical.

Use of the blast furnace

To keep its objective of reducing carbon in construction, Vinci has developed low carbon "low-furnace-made" concrete "from waste recycling" coming from the production of melting ".This ultra low carbon concrete, "that is to say without clinker," said Mr..Anjolras, would make it possible to achieve "60% CO2 savings compared to normal concrete".Note that this dairy resource is limited and also criticized due to its high carbon footprint (with cooking in the blast furnace)

In addition to the use of its new concrete, the construction group wishes to develop its supply of recycled materials.On a wider scale, Vinci and its Energies, Concessions, Highway and Real estate poles wish to reduce their CO2 emissions by 2030 compared to 2018 by 40% compared to 2018 compared to 2018 compared to 2018 compared to 2018 compared to 2018 compared to 2018 compared to 2018 compared to 2018 compared to 2018 compared to.

Its great competitor, Bouygues, announced close objectives, promising the same deadline to reduce direct emissions of its road and railway work, Colas, and 40% those of its other construction activities by 30%.The other French BTP giant Eiffage is experimenting for its part with up to 100% recycled aggregates, the first use of which is expected next year.

Photo © F.Leroy

Source: Batirama.com