Concrete repair PostParc Bern was our project part in the large-scale project The future of Bern station. Right next to the station, in the PostParc area, the existing concrete floor was at issue: it was heavily used, had an uneven structure and was no longer the right basis for the next stages of expansion.
Between November 2025 and January 2026, we therefore created a new, defined leveling surface. On this basis, the subsequent trades can later install insulation, load distribution plates and the final structure such as hard concrete or terrazzo cleanly and without additional corrections.
Concrete repair PostParc Bern as part of the Zukunft Bahnhof Bern project
In the PostParc, we encountered typical traces of a long «construction life»: localized spalling, height offsets and weak points from previous interventions. For further expansion, however, a surface was needed that would function as a reliable reference and permanently absorb loads.
The requirements were clear: a level compensation area, cleanly integrated drainage and a load capacity of four tons as specified by the engineer. So we dismantled the existing structure down to the load-bearing substance, removed damaged and loose areas and removed around 10 m³ of material. Only then was the surface prepared so that the new construction could be carried out in a continuous and controlled manner.
One point that is quickly underestimated in everyday life was the noise situation. Some of the demolition work, especially the topping, therefore took place at night. As a result, the process on the construction site remained stable and the impact on the surrounding area was noticeably lower during the day.
Leveling area on 2370 m² with PCI Repament Multi
For the new area, we relied on PCI Repament Multi. The mortar is described as a variable quick-setting mortar and can be adjusted in consistency depending on the amount of water added, which helps with varying layer thicknesses on large surfaces.
We processed a total of around 190 tons of material over an area of around 2370 m², creating a homogeneous, smooth and high-strength surface. The decisive factor here was not a «beautiful floor», but a clear function: the surface became the defined basis for the insulation and all subsequent structures, so that subsequent trades would not have to level out or make improvements first.
The new floor was designed without a slope, which simplified the work with reference heights and connections. At the same time, the drainage remained reliable: We integrated three existing drains into the new structure and connected them neatly.
Joint sealing with Sikadur-Combiflex SG
Where a floor structure is to function in the long term, details such as joints are often the crucial points. For sealing, we rely on Sikadur-Combiflex SG, a bonded membrane waterproofing system for joints and connections that can absorb movement and is designed for water and weather-resistant waterproofing.
In this way, the surface structure and waterproofing complement each other perfectly: the leveling surface ensures calm in the system, while the joint waterproofing reduces the risk of moisture or movement leading to damage and costly interventions later on.
What the PostParc Bern concrete repair will bring later on
Concrete repair PostParc Bern is ultimately not a «visible» highlight, but that is precisely what makes it so important. Our part of the project has three tangible benefits for subsequent operation and expansion:
-
Reserves for utilization
The required payload of four tons creates space for rolling loads, transport and technical equipment without the floor structure reaching its limits early on. -
Less friction in the extension
A level, defined leveling surface reduces the risk of interface problems. Insulation and subsequent structures can be built on an even substrate instead of first having to correct heights. -
More safety at critical points
Joint sealing addresses precisely those areas where problems often arise first in practice. This reduces the likelihood of early damage and subsequent restrictions in operation.
Key data on the PostParc project section
- Area: PostParc in the Future Berne Station project
- Client: B+S (site management), SBB (client)
- Period: November 2025 to January 2026
- Area: approx. 2370 m²
- Material: approx. 190 tons of PCI Repament Multi
- Drainage: Integration of 3 drains
- Geometry: without gradient
- Payload: 4 tons according to the engineer's specifications
- Dismantling: concrete removal, removal of approx. 10 m³ loose material, partly night work
This sums up the PostParc Bern concrete repairs pretty well: We have created a stable, level and clearly defined foundation on which the further expansion of PostParc can continue cleanly and without detours.
