Hydro Demolition

Hydro demolition is a method of concrete removal that uses high-pressure water jets to break down and remove concrete while preserving steel reinforcement. Specialised nozzles can be operated manually or by robotic equipment, allowing the method to be used across large areas and in restricted or difficult-to-access locations.

CSA Specialised Services provides hydro demolition and high-pressure concrete removal services in Queensland using specialised water-blasting equipment for infrastructure, industrial and structural applications.

Our hydro demolition capabilities include:

Selective concrete removal
High-pressure water blasting
Reinforced concrete removal
Hydro demolition for bridges, dams and industrial structures
Vacuum extraction of liquid washings and debris
Robotic and manually operated hydro demolition equipment

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What Makes Hydro Demolition the Best Choice?

Hydro demolition provides a controlled alternative to conventional mechanical concrete removal methods. Its low-vibration approach helps reduce the risk of micro-cracking and unnecessary damage to surrounding material, while high-pressure water limits airborne dust during removal. The process can also create a textured concrete surface suitable for subsequent repair and bonding work.

Selective Concrete Removal

Precise targeting helps remove selected areas of concrete while reducing unnecessary impact on surrounding material.

Reduced Structural Impact

Hydro demolition uses a low-vibration concrete-removal method that can be suited to structures such as bridges, dams and industrial tanks where limiting mechanical impact is important.

Reduced Dust and Noise

High-pressure water helps reduce airborne dust compared with dry mechanical removal methods, while the process can also reduce noise and vibration during concrete removal.

Precision High-Pressure Water Blasting

Our hydro demolition work uses Hammelmann high-pressure pumps, including 500 kW and 200 kW units capable of operating at pressures up to 3000 bar. These pumps support concrete removal in reinforced structures and can be configured for demanding, remote or restricted project environments, including container- or truck-mounted setups where required.

CSA’s Key Hydro Demolition Applications

Bridge and Road Infrastructure:
Used for selective removal of damaged concrete while helping preserve reinforcing steel during resurfacing projects.
Dams and Reservoirs:
Suitable for concrete-removal work in high-moisture and submerged environments where controlled removal is required.
Marine and Coastal Structures:
Supports low-vibration concrete removal in sensitive marine and coastal environments.
Industrial Facilities:
Supports clean and efficient upgrades in wastewater plants and industrial settings.
Tunnels and Overhead Projects:
Supports controlled concrete removal in confined and overhead work areas while helping minimise unnecessary impact on surrounding structures.

Industry-Leading Vacuum Extraction Systems

To complement our water blasting capabilities, CSA’s advanced vacuum units extract liquid washings and debris efficiently over distances exceeding 200 metres. This capability supports environmental responsibility by minimising on-site contaminants, crucial for complex projects such as dam wall scabbling. The range and capacity of these units contribute to CSA’s commitment to environmentally sound site management.

Hydro demolition before and after concrete removal

Hydro demolition and scabbling of an existing concrete structure

Heat Exchanger and Pipework Cleaning

Our use of the advanced Peinemann flex lance system enables our operators to conduct thorough and safe cleaning of internal tubes, along with meticulous high-pressure washing of all surrounding surfaces. The innovative design of the spinning heads on our equipment ensures an effective cleaning process that preserves the structural integrity of the tubes.

Our revolutionary spinning heads on flex lances ensure a thorough clean without tube damage. Using high-pressure water is the most effective way to eliminate scale and fouling, restoring heat exchangers to peak efficiency.

Project Management and Safety Compliance

CSA brings both technical expertise and advanced equipment, alongside a team committed to high safety and compliance standards. Our emergency liquid waste management response team is equipped with dangerous goods capabilities to respond swiftly to spills or waste needs.

Each project is planned meticulously, with flexible day-rate pricing to provide transparent budgeting options. Any necessary adjustments due to heavy buildup or material characteristics are promptly communicated, ensuring clear, efficient project progression.