Projects

Structural Refurbishment at Germany’s Highest Peak – Zugspitze

Location: Zugspitze, 2,962 m above sea level
Structure: Antenna and telecommunications facility (built in 1991)
Company: Hydro-Tech

Scope of Work:
Crack repair and concrete restoration on three foundations
Sealing of concrete-to-steel transitions with liquid waterproofing
Operations under high-alpine conditions

Highlights:
Germany’s highest workplace
Use of weather-resistant, extreme-condition materials
In close proximity to Germany’s highest photovoltaic system and public Wi-Fi hotspot

Floor Coating
AMG Workshop Augsburg

Client: Mercedes-Benz Branch Augsburg
Company: Hydro-Tech

Scope of Work:
Self-leveling coating applied over tiled floor
Substrate preparation (shot blasting, smoothing)
Integrated AMG logo using stencil technique
Water-based lacquer reinforced with glass beads

Highlights:
Exclusive design with slip resistance
Executed without removing the existing floor

Restoration
Olympic Stadium Munich

Location: Munich
Structure: Olympic Stadium (built in 1966, 70,000 seats)
Execution: 04/2010 – 12/2011
Company: Hydro-Tech

Scope of Work:
Concrete removal and reprofiling on main frame girders
Renewal of drainage channels including robotic technology
Restoration of edge beams and stair elements
Application of surface protection systems (OS-D II, OS8)

Highlights:
Work carried out during ongoing event operations
Listed historic structure
Complex scaffolding solutions

Complete Renovation
Donaucenter Neu-Ulm

Location: Neu-Ulm
Structure: Residential & office building (55 m, 18 floors)
Execution: 2023
Company: Hydro-Tech

Scope of Work:
Refurbishment of 168 balconies and loggias
Installation of 996 linear meters of window sills
5,500 m² of facade scaffolding
Disposal of 200 tons of construction debris
Installation of 45 tons of steel substructure

Highlights:
Scaffolding erected on parking garage roof with special support system
Limited crane use due to site conditions
Operations carried out during ongoing occupancy

Restoration of the Old Elbe Tunnel
– Hamburg

Location: Hamburg
Company: SGAT

Scope of Work:
Waterproofing and mastic asphalt application
Epoxy sealing and liquid waterproofing systems
Restoration of the western tunnel tube (400 meters in length)

Highlights:
Unusual surface geometry: total area approx. 800 m², length: 400 meters
Challenging material logistics due to narrow access zones and elongated layout
Precision machinery required – only 1.93 m between curbs

Silo Restoration Buttstädt

Location: Buttstädt
Execution: 2024/25
Company: BIK Uhr

Scope of Work:
Concrete repair of the silo facade with a total surface area of 31,000 m²
Restoration of concrete damage due to insufficient concrete cover and carbonation
Corrosion protection of reinforcement using dry abrasive blasting and coating
Coating of the concrete façade
Corrosion protection of four emergency ladders made of steel structures
Application of corporate logos

Highlights:
Work at heights up to 60 meters using suspended platforms
Cylindrical geometry of the silo cells
Operations during ongoing production
Strict safety measures due to fall hazards

Large-scale chloride extraction Munich

Location: Munich
Building: Office building
Execution: 08/2024-05/2025
Company: instakorr

Scope of work:
Conversion and revitalisation
Repair by electrochemical chloride extraction (ECE) for 2,190 m² area

Highlights:
Europe’s largest measure with chloride extraction
Simultaneous extraction current: 1,020 A
3 construction phases

Complete refurbishment of underground car park Nuremberg

Location: Sebalder Höfe, Nuremberg
Building: Underground car park
Execution: 10/2020 to 09/2021
Company: instakorr

Scope of work:
Complete refurbishment of the underground car park using a cathodic corrosion protection system (CCP)
Protected areas: 816 m² floor areas

Highlights:
Execution of the construction site during the Corona pandemic
Monitor & control devices and software CAB|ONE
650 m hybrid cable
8,816 m² floor area protected by Ti/MMO grid anodes
28 protection zones
106 reference electrodes
2 levels
4 construction phases
4 Bauabschnitte

Hybrid repair with CCP Berlin

Location: Friedrichsstraße, Berlin
Building: Underground car park
Execution: 09/2022 – 09/2023
Company: instakorr

Scope of work:
Complete repair of the underground car park. Combination of conventional concrete repair by means of HDW removal and including new concreting and cathodic corrosion protection (CCP).
3,950 m² CCP on floor areas
CCP on 42 support bases
Crack sealing
Coating work
Painting work

Highlights:
Combined repair by means of concrete removal with new concreting and CCP

ECE on prestressing steel bridge Borken

Location: Borken
Structure: Road bridge over railway line
Execution: 06/2021 – 11/2021
Company: instakorr

Scope of work:
Internal, leaking drainage of the carriageway through box girder floor
Removal of penetrated chlorides by electrochemical chloride extraction (ECE)

Highlights:
Prestressed steel bridge with slack plain steel reinforcement
Very cramped conditions

Historic wholesale market with KKS protected Hamburg

Location: Hammerbrook, Hamburg
Building: Fruit and vegetable wholesale market
Execution: 05/2017 – 10/2025
Company: instakorr

Scope of work:
17 construction phases in 8 years
Europe-wide tender won
Repair work while the vegetable and wholesale market is in operation
Partial conversion into an event location
The Federal Chamber of Engineers and the Hamburg Chamber of Engineers BAU honoured the hall as a historically significant engineering structure

P4 PPS system of superlatives Vienna

Location: Vienna Airport, Austria
Building: P4 multi-storey car park, Austria’s largest car park
Execution: 2016-2018
Company: instakorr

Scope of work:
Installation of a cathodic corrosion protection system (CCP)
200 m² floor areas
660 m wall base areas
240 column bases
3,000 m² preventive cathodic corrosion protection (pKKS)

Highlights:
89 protection zones with 4 controllers and 16 BUS interfaces
419 reference electrodes
4,900 discrete anodes
114,000 m Ti/MMO anodes in slots
17,350 m protective current-carrying cables
5,010 m of signalling cable
50 control cabinets
10 levels
13 sections
4 ramps

CCP protection for listed hyper roof shell Hamburg

Location: Alster swimming pool, Hamburg
Building: Hyper roof shell, swimming pool
Execution: 02/2021 – 07/2021
Company: instakorr

Scope of work:
Basic repair with demolition and new construction down to the hyper roof shell of the swimming pool built in 1973
Cathodic corrosion protection on over 3,255 m² on the underside of the ceiling of the listed prestressed concrete ceiling to protect against corrosion and to preserve the supporting structure

Highlights:
Hamburg’s largest swimming pool
Roof shell only 7 cm thick in places with upper and lower prestressing steel reinforcement and crosswise running prestressing steel in ducts in between
Processing of 10,300 m of cable from the hyper roof shell to the control units in the basement

Restoration of the Wankenitzbridge underside

Location: Ratzeburger Allee over the Wankenitz
Building: Wankenitzbridge underside
Execution: 07/2021 – 12/2022
Company: ABV Bau Ullrich

Scope of work:
Concrete repair
Coatings
Removal of stalactites, stalagnites and efflorescence
Tendon anchoring
Erect enclosure, work and protective scaffolding
Transport to and from pontoon system and work boats
Dismantle and rebuild bird flight protection
Set up longer-term traffic safety measures Traffic control technology
Graffiti removal
Large-scale concrete repair and application of surface protection on reinforced concrete (OS-C)

Highlights:
Work on the water
Five construction phases

Refurbishment of 3 underground garages Eckernförde

Location: Rendsburgerstraße, Eckernförde
Building: Underground garages
Execution: 03/2023 – 03/2024
Company: ABV Bau Ullrich

Scope of work:
Concreting and renovation of the reinforced concrete floors
Coating work on walls, columns, ceilings and floor surfaces
Concrete repair work
Concrete removal on walls, columns, ceilings and floor surfaces
Spray mortar on the underside of ceilings, walls and columns
Slope – installation of concrete/PCC incl. reinforcement and anchors
Installing drains
Installing joint profiles
Marking work
Drainage, fire protection, doors and joints
Sewer construction and drainage

Chloride extraction on a large scale

Location: B76 Manrade Kiel
Building: Pedestrian bridge
Execution: 07/2020 – 09/2020
Company: ABV Bau Ullrich

Scope of work:
Full closure incl. diversion
Construction of supporting, protective and working scaffolding
Prepare concrete base (grinding/milling/balling)
Concrete repair
Coating
Renewal of transverse joints
Lifting and draining the superstructure
Replace existing bridge bearings

B76-B404 brige Barkauer Kreuz

Location: Kiel
Building: Bridge
Execution: 03/2023 – 03/2024
Company: ABV Bau Ullrich

Scope of work:
Concrete repair and coating under the bridge
Traffic safety
Scaffolding
Concrete repair
Coating
Piling piers and restoring with shotcrete

Cap renewal and pier coating

Location: A7 bridge over K75, Rendsburg
Building: Bridge
Execution: 05/2014 – 10/2014
Company: ABV Bau Ullrich

Scope of work:
Scaffolding
Replace drains
Demolish old caps
Full-surface sealing
Set shear anchors
New cap construction
Concrete repair of piers
Coat piers

Repair of parking garage in the Lower Rhine region

Location: Lower Rhine region
Building: Parking garage, parking decks 1 and 2
Execution: 04/20212 – 12/2014
Company: Betonerhaltung West

Scope of work:

Parking deck 1: Demolition of 2,300 m² of old mastic asphalt, concrete repair of 2,300 m² of reinforced concrete surfaces in defined areas, construction of 2,300 m² of new sloped screeds in defined areas, Renewal of 260 m of parking garage drainage using concrete channels, demolition and renewal of 42 chloride-contaminated column bases using shotcrete, Installation of 600 m of Migua joint sealing profiles, coating of 2,300 m² of sloped screed with OS8 wear coating, concrete repair and OS4 coating for 3,400 m² of wall, column, and ceiling surfaces, including PCC fine filler.

Parking deck 2: Demolition of 2,300 m² of damaged old screed, installation of 2,300 m² of new wear screed, sealing and coating of 2,300 m² of sloped screed surface, concrete repair and OS4 coating of 5,000 m² of wall, column, and ceiling surfaces, including PCC fine filler

Highlights:
Warm roof construction with approx. 10 cm insulation layer, which was heavily damp due to leaks
Execution in approx. 5×5 m partial concrete areas to reduce ceiling cross-sections
600 m of roadway joints repaired, sealed, and renewed with Migua profiles

Repair work on the Eidels water tower in Bettembourg

Location: Bettembourg
Building: Eidels water tower in Bettembourg
Execution: 02/22-20/24
Company: Torkret Luxembourg

Scope of work:

Repair of the exterior surfaces and structural reinforcement of the foundations and supports of the water tower

Highlights:
Application of a surface protection system and subsequent artistic design of the exterior surface for the nearby Parc Merveilleux fairy tale park

Repair of viaduct on the A3 motorway in Livange

Location: Livange
Building: Viaduct on the A3 motorway
Execution: 03/2024-07/2025
Company: Torkret Luxembourg

Scope of work:

Repair of bridge soffits and coating with surface protection system over an area of 16,200 square meters

Highlights:
The work was carried out while the Luxembourg-Bettembourg railway line remained in operation.
The project was carried out in parallel with the widening and structural reinforcement of the two bridge superstructures on the viaduct.

Renovation of historic water tower in Hellange

Location: Hellange
Building: historic water tower
Execution: 04/23-05/24
Company: Torkret Luxembourg

Scope of work:

Repair and structural reinforcement of the exterior surfaces and interior shaft using shotcrete and a mortar mixture specifically formulated for the construction site

Highlights:
Renovation of a historic water tower made of precast reinforced concrete elements, unique in Luxembourg, in accordance with monument preservation and structural requirements.
Historic water tower built in 1911