Repair of dams and hydroelectric power plant constructions with UHPC concrete

Hydroelectric power plant

UHPC Concrete has been used as a construction or

repair material in offshore, port construction and

coastal protection worldwide for more than 25

years. UHPC concretes are far superior to standard

concretes in their application and service life

expectations.

Typical areas for UHPC concrete repairs

 - Core walls
 - Deflection tunnel
 - Spillways
 - Stilling basins
 - Slope protection

Advantages of UHPC compared to standard concrete

 - Extremely high compressive strength
 - Very good adhesion
 - Waterproof from a layer thickness of 15 mm
 - Very high wear resistance
 - Very high corrosion resistance
 - Very high resistance to frost and ice
 - Very good impact resistance
 - Quick and easy installation, even of large areas
 - Thanks to the extremely fine UHPC binder, even the

   smallest joints and cracks can be closed well and permanently
 - UHPC can be processed as shotcrete, castable or as mortar.
 - UHPC reaches more than 70% of its maximum nominal

   strength after 48 hours.

Dams
Especially the slides of a dam are subjected to high amount

of wear as a very high volume of water is running over

these. UHPC can easily withstand this water. UHPC is the

ideal material for dam reinforcement and repair/maintenance.

UHPC materials can be quickly and extensively processed

as mortar, cast or shotcrete.

The rapid and high strength development favors a quick

restart of the system.
In the lake in front of the dam, the dam will be subjected

to impact by debris, which can deteriorate concrete. Placing

a layer of UHPC will end the deterioration.