Task
Design, delivery, and service of 3 high-pressure water jet systems used by a specialist construction company for maintenance repairs on a motorway bridge of the Brenner autobahn.

Preparation
Luegbrücke, a bridge commissioned between 1965 und 1968, with an overall length of 1837 meters, was for a long time the longest motorway bridge in Austria. Strong mechanical stress inflicted by heavy traffic on the Brenner autobahn and atmospheric conditions necessitated a general overhaul. Construction company Held & Franke, ordered to repair the bridge and implement corrosion prevention measures, required high-pressure water jet systems for removal of certain edificial top layers and for the exposure of the reinforced concrete structure beneath.

Contractor
falch GmbH, founded in 1986, designs, produces and globally distributes high pressure cleaners, jet water machines, and accessories such as protective equipment. The falch equipment includes high pressure water jet systems from 2 to 120 kw, 100 to 2500 bar, water quantities from 600 to 7000 l/h. These machines are e.g. available with separate heating modules or as combination units for use of hot water. Customers using falch machines within the maintenance branch come from industry, the trades and services sectors.

Internet
http://www.falch.com

Brief Description

• Technology and machines for concrete maintenance and cleaning purposes.
• High-pressure water jet technology for maintenance repairs on a motorway bridge of the Brenner autobahn.
• Treatment and exposure of damaged surface area of the bridge structure without injuring the concrete reinforcement by using special techniques and a special jet streaming technology. 

Customer's Benefit

• Time saving and cost-efficient technology for the removal of tenacious, elastic layers.
• Continuously adjustable speed controlling directly at the nozzle enables much better blasting results in comparison to other jet systems and increases area performance by 20% with regard to conventional systems.
• falch hyjet-technique enables conserving exposure of concrete reinforcement.

In-depth Study
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