Complete reinforcement of a factory ceiling

Birsfelden, Switzerland

Description
In the course of modifications and new loads, a ceiling slab had to be strengthened. The slab is supported by rows of columns and shows static deficits. Sika® CarboDur® S1012 lammelas were installed on the underside of the slab to increase the structural safety. Above the columns, the negative bending moment had to be covered with re-bar 10 bars. For this purpose, the concrete was locally removed and roughened. The re-bar in the new mortar layer (Sika MonoTop®-452 N) were activated and prestressed by electrical resistive heating. Finally, the areas of the electrical connectors were poured.

re-fer product
Negative bending moment: re-bar 10 in repair mortar Sika MonoTop®-452 N
Pos. bending moment: Sika® CarboDur® S1012

Location
Birsfelden, Switzerland

Year
2022

Contractor
re-fer and Implenia

Info
Pos./neg. flexural strengthening

Engineering consultant
A. Aegerter & Dr. O. Bosshardt AG

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