What systems are used? what are the differences?
In practice, two systems are preferentially used. One option is the fresh concrete composite membrane with a fleece backing. This backing forms a mechanical bond with the concrete after pouring and hardening. The bond between the fresh concrete composite membrane and the concrete is virtually impossible to detach.
The second system used is an adhesive bond system. Here, the concrete-facing side of the fresh concrete composite membrane is coated with an adhesive layer that reacts with the concrete to create a bond.
In practice, almost all types of fresh concrete composite membranes are based on the two main systems of mechanical or adhesive bonding with the concrete. In terms of the membrane types and their layer structure, however, they differ in the number of layers, material thickness and functionality.