Project: Melchsee-Frutt, Switzerland
Investor: Sika Bau AG, Switzerland
Works: Fixing the water intrusion in reinforced concrete manhole of the dam overflow

Condition of the structure: Reinforced concrete structure, h=27 m d=2x40,0 cm, fitted with Sikaplan foil and waterstop tape, connected with injection tubes; visible leaks in joint areas of the concrete segments and on the injection places.

The process of restoration: Implementation of the Euras Gel Type B enabled us to, on the principle of hydraulics, inject the material in the regime of high pressure (up to 50 bars), and entering into water courses in the area of concrete
segments joints, using the present water as vectors of movement of gel, permanently suppress it and prevent it’s return. On this occasion, the gel connected different injection places during injection. It appeared on the injection tubes after the displaced water, ie. by squeezing out the water, permanently strengthened the function of embedded insulating membrane.

Over 500 kgs of Euras gel was incorporated. It also shows a fact that in a seemingly quality concrete construction there are cavities filled with water in structures that were exposed to extreme impacts during construction and exploitation.