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Floor slab reinforcement - New building of a primary school - Nebikon, Switzerland

Flexural

Country 

Switzerland

Location 

Nebikon/LU

Date 

2014

Case Study 

Floor slab reinforcement with S&P CFK-Laminates 150/2000 (FRP 2014_06)

Solution 

For the conversion of a fire brigade building into a primary school, the client wished to integrate some of the existing structure into the new building. To bear the new loads, the floor slab had to be reinforced with a new layer of in-situ concrete on top and S&P CFK-laminates on its underside. Furthermore, new columns required a local adaptation of the studrails (punching shear reinforcement). The concrete surface was prepared by sandblasting, onto which the laminates are then mounted transversally with S&P Resin 220, securing a force-transferring bond. The structure is not loaded during the reinforcement work period.

Material 

3’000 m’ S&P CFK-Laminates, type 150/2000, various cross sections

Testing the tensile adhesive strength on the sandblasted bearing substrate

Detail of reprofiling with S&P Resin 230 in the area around a ceiling ledge

Application of the first layer of CFK-Laminates

Section of completed floor slab reinforcement, seen from below

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Region

S&P