Underwater concrete placement
Hydraulic concrete – Processing – Special concrete mixes

When pouring traditional concrete underwater, it is not uncommon for the material to become dislodged. The mortar and gravel separate, and the laitance leaches out. However, underwater concreting is essential for all marine and hydraulic works (construction or reinforcement of submerged foundations, superstructure foundations, dikes, canals, etc.).

The addition of active colloid can sometimes limit these problems of decohesion.