Create a demonstrator of circular economy practices at the scale of an ecodistrict
Terms of the action or commitment
1. Eiffage Aménagement will schedule early on the selective deconstruction of buildings to improve the recovery of deposited materials and products. The association Réavie will oversee the deconstruction and recovery of materials and products which are grouped together on an experimental reuse platform: the “Solid’R” platform. The latter will allow materials and products to be grouped together, refurbished and sold if they are not reused on site.
2. The project aims to reuse 100% of the demolition material and rubble on site via a crushing operation that will produce recycled aggregates. The new buildings will therefore be constructed using recycled concrete and incorporate other less carbon-intensive materials (notably novel concretes). These actions aim to enhance the valuation of local resources while taking a global approach to reducing carbon emissions. Eiffage ambitions to achieve the E3C1 grade of the Carbon-Energy Label for the whole eco-district.
2022 follow-up of the action
b) Numerical / Qualitative information
The E3S collaborative project is currently producing concrete walls and posts integrating 100% recycled aggregates which has obtained an ATEx (a temporary product approval for experimental use within a construction project) granted by the CSTB (Building’s Technical and Scientific Centre).
In addition, Eiffage Immobilier has included the Châtenay works with the “Reuse Booster”, intending to integrate reused elements in its construction program.
The E3S is joint effort led by Eiffage Group and the future University Gustave Eiffel and benefits from the “I-SITE FUTURE” grant which is part of the national Future Investments Program. The latter regroups the University Paris-Est Marne-La-Vallée, IFSTTAR, ESIEE, ENSG Géomatique, EIVP and the Paris-Est School of City and Territory Architecture