Also known as Hydro-Blasting or Hydro-Jetting

Hydro-Blasting is a technology that uses extremely high pressure water jets that are capable of cutting through concrete. The practical application of this technique makes it an extremely effective and efficient method of concrete removal. This is due to two main factors, one being the direct impact of the water jet on the surface. The other is the porous nature of concrete, the high pressure water is forced into the tiny cavities and cracks within the concrete mass, causing it to fracture and split.

 

The variable parameters of the technique, water pressure, jet size and speed of application make it possible to demolish and remove concrete in a very precise and controlled way. These variables enable selective removal of deteriorated or delaminated concrete, aas the jet stream penetrates the cracks and faults in the degraded materials more quickly, leaving the sound concrete intact.

 

The equipment can also be adjusted to remove concrete to predetermined depths. These capabilities make it a very suitable method of enabling repairs to concrete structures, as it allows accurate removal of materials, leaving the substructure and steel reinforcement intact as required.

 

Benefits

• Steel reinforcing ca be left intact and descaled.
• Removes corrosion and mortar paste.
• Leaves an exposed, washed and scabbled surface of the aggregate, providing an ideal surface for the bonding of new layers.

 

Advantages of Hydro Demolition

• Dust free.
• Reduced noise.
• Can precisely and selectively remove damaged or deteriorated concrete, leaving 'good' concrete intact.
• Nil vibration reduces unnecessary delamination or damage to adjacent structures.
• Embedded reinforcing can be exposed and cleaned of rust and scale without damage.
• Provides excellent bonding of exposed substrate to new layers due to its cleaning action.
• Dilutes chloride ion concentrations at bonded surfaces.
• Is faster and more cost effective than conventional mechanical methods of demolition.