Hydrophobic treatments on concrete – Evaluation of the durability and non-destructive testing

In the current research two different types of concrete were used. A rather porous substrate was represented by a C20/25 according to DIN EN 206-1:2001. A rather dense material was represented by a C040 according to DIN EN 1766:2000. In order to avoid the influence of any organic substance, no fly ash, silica fume, super-plasticizer or release agents were added to the concrete.