Ecologically valuable

Grouted revetments not only have to withstand current and waves but have to meet ecological demands. When it comes to underwater grouting the general permeability and sufficient remaining porosity have to be ensured as long as there is no need for full grouting because of special stress conditions. Both demands are met by means of the right mortar consistency which is ensured by using automated underwater equipment or manually by experienced engineering staff above water.

Revetments built above water must allow a quick re-planting of vegetation and therefore the adjustment to the scenic conditions found before. This is being achieved either by planting different types of aquatic plants such as reeds, sedge, rush, iris and calamus or by installing a continuous capillary border between the in-situ soil and the upper plantation of the revetment.

The topsoil is converted into fluid consistency by means of an agitated mixer and then installed into the pores of the revetment. To advance growth and strengthen the plants, alginate is added to the topsoil.

Fluidized topsoil is pumped into a grouted revetment.

Vegetated grouted revetment