Recycled concrete: a “prerequisite”
In addition, Antiglio-Frutiger planned to build the new extension by demolishing two library buildings originally renovated in 1976. This extension has now taken shape as a striking architectural statement, featuring a glass facade with vertical wooden slats and strips of anodized aluminum.
With sustainability concerns at the forefront for the build, Antiglio-Frutiger chose EcoPact low-carbon concrete with construction demolition materials (CDM) inside, to meet more than 50% of the project’s concrete needs.
“Using recycled concrete was a prerequisite for the client to meet the project’s sustainability requirements, and this led us to explore the most advanced solutions on the market,” says Pierre-Yves Poncet, construction manager and board member of Antiglio SA.
Susteno cement containing high-quality mixed granulate from demolished buildings was the basis for bespoke ECOPact concrete mixes that also contain recycled aggregates – preserving primary materials and leading to a 10% further CO2 reduction versus standard recycled concrete.
“Both in terms of processing and the final result, there is no discernible difference compared to non-recycled concrete,” Pierre-Yves Poncet says.