Tourism is an important source of income for Croatia’s economy, so the development of major infrastructure such as roads and motorways is essential to ensure that both domestic and foreign tourists can easily access the country’s beautiful seaside. The Istrian Y Motorway is one such major infrastructure: It already sees 10 million vehicles per year, with over 60,000 vehicles per day during the peak summer period.
For investor Bina Istra and building firm Bouygues Construction, the project posed three main challenges: reducing its carbon footprint by choosing the right construction materials, adhering to the strictest environmental regulations because the construction site lies within the Učka Nature Park, and timely completion.
The current phase of the Istrian Y Motorway involves converting the remaining part of the current Y Expressway into a motorway and constructing the second pipe of the Učka Tunnel, which will connect the two major cities of Pula and Rijeka by a full-width motorway.
For this crucial project, Bina Istra and Bouygues Construction partnered with Holcim to find an integrated solution that would lower the project’s carbon footprint, close the material loop and improve the tunnel’s drainage during times of heavy rainfall.
To respond to the project’s strict performance, low-carbon and environmental demands, Holcim Croatia is supplying more than 120,000 m3 of ECOPact, the world’s broadest range of low-carbon concrete with CO2 reduction starting at 30% and no compromise in performance.
Additionally, Holcim is saving 200,000 tons of virgin materials by placing a mobile ready-mix plant onsite that uses tunnel excavation material for ECOPact concrete production. With the mobile plant, Holcim is not only driving circular construction but also reducing the environmental impact from transporting minerals from a quarry.