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
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. The renovation is done by hand or with automated robots. more information about Concrete Repair
Before each new surface coating, the relevant area (concrete, steel, floor, etc.) must be prepared in accordance with the respectively required standards and renovation guidelines. Optimal adhesion properties of the surface and coating material are the most important prerequisite for a long-lasting, professional recoating in compliance with the warranty. more information about Coating Removal
Dry-ice cleaning is an innovative new technology that was developed as an environmentally friendly, safe, inexpensive and fast alternative to traditional cleaning with brushes and spatulas. This process shock-freezes the impurities so that they become brittle and detach from the surface. more information about Dry-Ice Blasting
The recycled water and any solids (rust, primer and top coats) are delivered into a mobile water-treatment plant, where process water and solids are continually separated using a multi-chamber filter system and pelletisation device. The recycled water is clean and free of suspended matter and may be resupplied to the high-pressure pump or fed to the drains. more information about Water Recycling
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.