Project Description

This modern concrete Cultural Centre was built in 1978 for exhibitions and concerts.
It contains some of the oldest works of art dating back to the Roman-Gaul period in Swiss history.

The prefabricated orange concrete elements and red marble features were suffering the effects of strong climatic conditions. Weathering of the cement skin and spalling resulted in degradation of concrete surface layer. High surface porosity was also leading to technical problems, for example the influence of freeze and thaw cycles. Dirt and contaminants were deposited in the shadowy regions where also moss could be found.

Project Requirements

The building owner recognized the rapidly increasing rate of deterioration and commissioned a comprehensive rehabilitation scheme with long-term protection. As part of the building conservation the existing aesthetic features had to be matched so not to alter the original appearance of the structure.

Sika Solutions

The large concrete elements were washed and cleaned with water pressure. The near-surface steel reinforcement bars were applied with Sika® MonoTop® corrosion protection.
Decayed, damaged and areas of concrete spalling were prepared and re-profiled using a Sika® MonoTop® concrete repair system.

To increase durability, protect against the climatic conditions and prevent moisture penetration the entire surface was applied with a multi-layer protection system. Firstly the surfaces were coated with a Sika® MonoTop® thin cement based leveling mortar. As part of the conservation strategy the original timber formwork imprint was simulated on the surface. An elastic Sikagard® protection system was then applied on the surface to close the pores and provide an effective resistance against carbon dioxide diffusion; one of the main causes of carbonation.

This water-tight system whilst still allowing a “breathable” facade and still permeable to water vapor.

Sika Products

In addition the following Sika products were used in the project:

  • Sika® MonoTop®-610
  • Sika® MonoTop®-613
  • Sika® MonoTop®-623
  • Sikagard®-545 W
  • Sikagard®-550 W
     

Check out more information about Sika products in the Swiss market

Project Participants

Client: Fondation Pierre Gianadda, Martigny
Concrete Repair: Mega SA, Martigny
Prefabricated elements: Martial Constantin & Cie, Vernayaz