Eco-concrete breakwater structures – IJmuiden

Lessons Learned

The following lessons were learned from this project:

  • Use of certain types of textures and geometrical shapes on the concrete blocks of a harbour breakwater has a positive impact on the amount of biomass at the breakwater.
  • The additional costs of eco-friendly concrete blocks are only in the order of a few percent of the costs of concrete blocks.
  • One can control the settlement of certain species by applying a certain texture or geometrical shape: mussels prefer grooves, periwinkles settle mainly in the grooves and holes, etc.