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chain in Leeuwarden successfully demonstrated the feasibility of reusing demolition materials in local construction projects. By closing the concrete loop within the municipality, the initiative put in place measures to reduce CO₂ emissions, minimise the need for new raw materials, and decrease construction related transportation impacts. This project set a precedent for circular urban redevelopment, proving that circular construction practices can be both environmentally and economically viable, and could inspire other municipalities to adopt similar approaches.\u003C/p>","\u003Cp>The case addresses two major challenges: the significant CO₂ emissions generated by concrete production and the increasing global demand for raw materials. Traditional construction methods rely on producing new concrete, which is energy-intensive and produces a significant amount of GHG emissions (around 8% of global emissions in 2022). Construction and demolition waste is one one the largest waste streams in the EU and has significant potential for material recovery, however is often discarded rather than reused. 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