Client
Ifercat (Infraestructures Ferroviàries de Catalunya) is the public body of the Government of Catalonia responsible for maintaining, managing, and administering the railway infrastructures in Catalonia assigned by the Government. Ifercat is in charge of the Line 9 metro project.
Challenge
To introduce circularity criteria into the materials and construction solutions of the fit-out and installation projects for the Maragall and Guinardó stations on Barcelona Metro Line 9.
What was done?
Applying a life cycle perspective, the proposed construction materials and solutions from the design teams were mapped and analysed.
Subsequently, materials without specific requirements, limitations or technical restrictions were identified — allowing for the proposal of circular economy alternatives. Actions were defined to prioritise regenerative resources, extend material lifespan, and incorporate surplus materials generated during construction.
When prioritising one solution over another, we assessed technical and economic feasibility as well as the potential environmental impact.
The project considered various elements, including flooring and wall finishes, ventilation and air conditioning systems, plumbing and sanitation, doors, and finishes and signage, among others.
Results
17
Improvement alternatives proposed for 8 materials or construction solutions.
1 - 3
Circular alternatives prioritised for 8 materials according to technical, economic, and environmental considerations.
1
Set of KPIs defined to assess the success of the proposed alternatives.
Conclusions
Although the project does not involve a complete redesign of construction materials, it demonstrates how circular economy principles can be integrated into the infrastructure sector.
This initiative represents a step forward towards more sustainable and resilient transport infrastructure, aligning with the European Union’s goals on decarbonisation and resource efficiency.
All the cases