Outside Paris, Holcim, a Swiss-based provider of innovative and sustainable building solutions, and Seqens, a social housing provider in France, are partnering to build Recygénie—a 220-unit housing complex, including 70 social housing units. Holcim is calling the project the world’s first fully recycled concrete building.
To build Recygénie, Holcim will use a concrete it has developed in which all components—cement, aggregates, and water—are made of recycled materials. The organization says its recycled cement has saved about 3,000 tons of natural resources that would have been extracted from quarries. Holcim’s concrete—made with recycled aggregates from construction and demolition waste, recycled wastewater, and rainwater—has saved more than 6,000 tons of natural resources.
“We need to shift gears: from a linear take-make-waste economy to a circular one, to improve living standards for all, while staying within our planet’s limits,” Edelio Bermejo, Holcim’s head of global R&D, said in a statement.
The Recygénie project is part of a renewal program launched by the City of Gennevilliers, located in the northwest suburbs of Paris. The project will offer new and diversified housing—including both social and private housing—as part of a redevelopment of the entire district.
After creating cement with 20% recycled construction and demolition waste in Switzerland, Holcim has been working to scale the solution across Europe. Holcim says it aims to use fully recycled concrete across all its markets, adapting the solution to local building norms and material availability. In 2022, Holcim recycled 34 million tons of materials, 7 million tons of which were construction and demolition waste—turning these materials into new building solutions and alternative fuels.
Construction of Recygénie is underway, with completion expected by the end of 2024.
On the Building Team:
Architect: A26 BLM
Owner and developer: Seqens
Engineer: Ingea
Control bureau: Qualiconsult
General contractor: Legendre
Related Stories
| Aug 11, 2010
Concrete Solutions
About five or six years ago, officials at the University of California at Berkeley came to the conclusion that they needed to build a proper home for the university's collection of 900,000 rare Chinese, Japanese, and Korean books and materials. East Asian studies is an important curriculum at Berkeley, with more than 70 scholars teaching some 200 courses devoted to the topic, and Berkeley's pro...
| Aug 11, 2010
Precast All the Way
For years, precast concrete has been viewed as a mass-produced product with no personality or visual appeal—the vanilla of building materials. Thanks to recent technological innovations in precast molds and thin veneers, however, that image is changing. As precast—concrete building components that are poured and molded offsite—continues to develop a vibrant personality all it...
| Aug 11, 2010
AIA Course: Historic Masonry — Restoration and Renovation
Historic restoration and preservation efforts are accelerating throughout the U.S., thanks in part to available tax credits, awards programs, and green building trends. While these projects entail many different building components and systems, façade restoration—as the public face of these older structures—is a key focus. Earn 1.0 AIA learning unit by taking this free course from Building Design+Construction.
| Aug 11, 2010
Tall ICF Walls: 9 Building Tips from the Experts
Insulating concrete forms have a long history of success in low-rise buildings, but now Building Teams are specifying ICFs for mid- and high-rise structures—more than 100 feet. ICF walls can be used for tall unsupported walls (for, say, movie theaters and big-box stores) and for multistory, load-bearing walls (for hotels, multifamily residential buildings, and student residence halls).
Concrete | Aug 11, 2010
8 Innovations That Will Rock Your Next Concrete Project
If you think you've seen it all when it comes to concrete construction, then you haven't sat down with Blaine Brownell. The architect-turned-blogger-turned-author has become the industry's foremost expert in everything that is unconventional and provocative in the building products field. For the past eight years, this LEED Accredited Professional, BD+C “40 Under 40” winner, and vis...
| Aug 11, 2010
Great Solutions: Products
14. Mod Pod A Nod to Flex Biz Designed by the British firm Tate + Hindle, the OfficePOD is a flexible office space that can be installed, well, just about anywhere, indoors or out. The self-contained modular units measure about seven feet square and are designed to serve as dedicated space for employees who work from home or other remote locations.
