ECOncrete leads a pilot project to reuse dredged clay in Denmark

The Port of Esbjerg in Denmark is working with ECOncrete to reuse dredged sediments in a new generation of Coastalock coastal protection units. This initiative aims to lower the carbon footprint of port infrastructure works while creating habitats that can support richer marine biodiversity.

Clay from port dredging is incorporated into the concrete mix used to cast the Coastalock units, reducing the need to dispose of sediments and partially replacing conventional cement. This circular approach helps cut emissions associated with coastal construction, which is a significant challenge for ports seeking to decarbonize their operations.

In addition, ECOncrete’s proprietary concrete additive is used to improve surface conditions for marine life to settle and develop. The armour units can function as micro‑habitats, combining the required level of coastal protection with better ecological performance along the port’s waterfront.

This is the first time ECOncrete’s technology has been combined with the direct reuse of dredged clay in the same coastal protection element. The project offers a practical example for other ports interested in reusing dredged materials, integrating nature‑inclusive infrastructure, and reducing the environmental footprint of future development.

^{Credit: ECOncrete (ECOncrete Coastalock installation in Port of Esbjerg)}