Sysav, Sweden – The Port of Trelleborg Expands with 87,000 tons of Sustainable “Slaggrus”

9 May 2025 (This article has been archived*)

The Port of Trelleborg, Sweden’s largest Ro-Ro port, is setting a new standard for sustainable construction. As part of its expansion, the port incorporated 87,000 tons of Sysav’s “Slaggrus,” demonstrating how waste can be transformed into a valuable circular resource. This high-performance material effectively replaces natural crushed rock while significantly reducing CO₂ emissions.

Using “Slaggrus” in Sweden requires compliance with strict site-specific guideline values. The Port of Trelleborg is one of the first locations permitted by local authorities to use it on such a large scale. This pioneering project showcases how innovative, waste-based materials can contribute to climate-positive infrastructure.

Thanks to its circular approach, the project avoided approximately 5,000 tons of CO_₂ emissions, verified by RISE (Research Institutes of Sweden). Beyond sustainability, “Slaggrus” delivers excellent cost-efficiency. As a locally produced material, it provides a sustainable, cost-efficient alternative to traditional construction aggregates without compromising performance.

Its durability and stability make it ideal for infrastructure projects. The Port of Trelleborg expansion is more than a regional milestone—it represents a bold step toward a greener, resource-efficient future. This project paves the way for a new era of sustainable urban development by scaling circular solutions, proving that climate-friendly construction is a reality today.

This project is a prime example of how residues from waste treatment can be repurposed at scale, setting a new benchmark for sustainability in infrastructure development.

Other nominees for the 3rd CEWEP Integration Award:

MVV, Germany – Improvements in Energy Efficiency in District Heating

A2A, Italy – Flue Gas Condensation Project

The Award winners will be decided by popular vote during CEWEP Congress 2025 on 5^th June in Gdańsk.

Back to all nominations

* Note on archived content: The texts and documents provided in this section serve exclusively to document the activities of CEWEP and to provide information about their progress. They reflect the factual and legal status as well as the data bases as of the respective publication date and will not be updated after publication. All information, in particular statements with environmental or sustainability references, key figures, goals and forecasts, refer exclusively to the time and the methodological and legal framework conditions applicable at that time. They do not make any statement about the current or future characteristics of products, services or activities and do not constitute advertising for specific products or services or an offer. Whether and in what form the goals or declarations of intent mentioned therein will be continued can be determined exclusively by the current publications.

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