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High-pressure water jetting has
progressed from an alternative for a
limited range of applications to a
versatile technique which is recognized
as state-of-the-art in
construction engineering. This
development was particularly
promoted by the implementation of
new regulations concerning remedial
work on buildings and other
structures, as well as by requirements
in the field of environmental
engineering. High-pressure water jet
units and tools are today employed
successfully in all areas of construction
engineering: soil and foundation
engineering, civil engineering projects,
remedial work, building materials
engineering, demolition, and recycling.
The WOMA high-pressure water jet
technique is suitable for:
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Cleaning of concrete, stone, brick and metal surfaces. |
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Raking out of joints. |
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Removal of coatings and paint from surfaces, technical equipment, and construction elements. |
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Derusting of steel surfaces and reinforcement bars. |
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Partial removal of deteriorated concrete and exposing of corroded reinforcement bars. |
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Roughening of concrete surfaces. |
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Heavy hydrodemolition of concrete. |
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Cutting and separating of steel, reinforced concrete, etc. |
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Widening of cracks in reinforced concrete prior to filling. |
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Removal of residues and incrustations from autoclaves, vessels, heat exchangers, ducts, and pipelines. |
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High-pressure water jet support for sheet-pile driving and various clearing operations. |
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Jet cutting of building materials (insulating material, rubber, glass, natural stone, etc.) |
Why High-Pressure Water Jets? |
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There is a wide range of tools available. |
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Small reaction forces; therefore, the technique can easily be mechanized and automatized. |
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No gas, vapour or slag formation. |
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Minimum vibrations. |
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Negligible structure-borne sound. |
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Selective material removal behaviour (distinction between different concrete strength and between coating and base material). |
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High pull-off strength. The required value (1.5 MPa) can be realized with a 95 % reliability. |
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No damage or loosening of internal parts (reinforcement bars, prestressing elements) or transition zones. |
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No influencing of the surface structure or mechanical properties of the parts and materials treated. |
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The high-pressure waterjet technique is recommended, or even prescribed, in nearly all relevant technical guidelines and regulations in construction engineering. |
Range of Materials |
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Range of Materials
Using high-pressure water jetting, the
following materials can reliably and
efficiently be removed:
adhering multi-layered coatings, worn
protective coatings, chemical contaminations,
joint mortar, parting agents,
oil, dirt, damaged and lowstrength
concrete layers, rust, anticorrosive
paint, cakes and incrustations, earth
and contaminated soil.
Using abrasive ultra-high pressure
water jet units or jet cutting systems,
the following materials can reliably
and efficiently be cut or seperated:
Construction steels, coated metal
structures, pipeline elements, heavily
reinforced concrete members, fibrereinforced
materials, multi-layered
construction elements, glass, ceramics,
insulating material.
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The Technique |
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WOMA offers the complete range
of the high-pressure water jet
technique. WOMA’s plunger pumps,
equipped with central valve heads,
generate operating pressures up to
3,000 bar and deliver water flow
rates up to 1,679 l/min.
For maintenance work and heavy
hydro-demolition, WOMA has
developed complete systems including
innovative units for connecting
several tools in the ultra-high pressure
range.
For maintenance work and heavy hydrodemolition,
WOMA has developed
complete systems including innovative
units for connecting several tools in the
ultra-high pressure range.
The WOMA-program for construction
engineering also includes the following
components:
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Hand-held lances for cleaning and stripping. |
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Hand-held guns in modular design for the treatment of sensitive surfaces and selective removal. |
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Emission-free performing tools for horizontal and vertical cleaning and stripping tasks with simultaneous suction of water and waste material. |
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Self-driving and externally driven rotating nozzle heads for careful surface preparation. |
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Hydraulically driven nozzle heads and traversing units for heavy hydrodemolition of concrete. |
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Mobile abrasive ultra-high pressure water jet cutting systems. |
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Sewer cleaning nozzles and pipe cleaning systems. |
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Positioning devices and vessel cleaning heads for internal container cleaning. |
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Special tools. |
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Decoating of reinforced concrete with hand-held high-pressure water jet guns
Heavy concrete hydrodemolition
Vibration-free cutting of reinforced concrete floors by abrasive high-pressure water jets
Concrete hydrodemolition in drydocks
Partial concrete removal and exposing of reinforcements with hand-held water jet tools
High-pressure water jet supported sheet pile driving
Heavy hydrodemolition of concrete with specially developed high-pressure robots
Bitumen removal from a profiled steel base with rotating nozzle head without damaging the steel
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