Concrete hydrodemolition, renovation of underground car parks and removal of coatings of facades with water or dry ice blasting.
The favourite material of the past century, concrete, is by now used in just about all buildings in conjunction with reinforcing bars. Natural ageing (“carbonation“) and environmental factors such as static overloading or salt spreading are primary sources of damage to the concrete and reinforcement. Ensuring the safety of the building requires timely and professional concrete repairs.
For this purpose, the old concrete is removed so that reinforcing rods can be exposed and cleaned. A new corrosion protection system can then be applied, followed by a new top layer of concrete and a special coating.
The advantage of removing concrete with high-pressure water jets is that surfaces are treated gently and without vibrations, which prevents stress cracks. At the same time, the reinforcement is cleaned directly by the water jet and prepared for further processing steps.
Damaged concrete is partially removed with a water jet at up to 3000bar and 400 litres per minute; this is done by special removal robots, or manually by way of hand lances.
This process is used
Reference projects regarding the application Building Construction:
Bored pile head rehabilitation in Linz
Removal of concrete from bored piles using the pilger process.
Stuttgart underground car park
Removal of concrete from floor and columns as well as roughening of wall bases, including final cleaning in preparation for new concrete.
Rosenheim underground car park
Underground car park renovation, removal of concrete from wall and support base as well as in the area of the evaporation channels.
Stone masonry renovation
Cleaning of stone masonry and removal of loose jointing material.
Lift shaft renovation
Concrete removal in lift shaft with hand lance.
Aquapulco Bad Schallerbach
Dismantling of a glass fibre water slide.
Cement plant Gmunden
Concrete renovation at cement plant Gmunden
Coating removal and dry-ice blasting during the renovation.
Voest coke delivery system
Renovation of the coke delivery system at Voest Linz
Underground car park Pfauengarten Graz
Renovation of an underground car park
Underground car park Ulm
Renovation of an underground car park.
Complete concrete removal and cleaning of the reinforcement.
Underground car park Vienna
Coating removal and exposing of reinforments
Car park Zürich
Totaly renovation of the parking lot P1 of the airport Zurich.
Concrete removal on all 8 decks with the use of multiple robots and lances simultaneously.