What is Hydro Demolition?
Hydro demolition is a means of removing concrete from around a structure, without damaging the steel substructures within or around the concrete. First adopted as a means of removing concrete without damaging the steel substrate back in the 1980’s, this alternative method of demolition is often used because of the precision in which the area that requires repair needs to be defined.
This is achieved by using a robotic controlled method of ultra-high pressure water jetting 30000 psi @ 22 litres to 30 litres per minute to remove or demolish the concrete, grout or asphalt. Hydro demolition is a very safe alternative to traditional demolition methods. One of the environmental advantages of using Hydro Demolition is controlling the dust created by normal demolish methods.
Hydro blasting as it is also known, is also a means of removing asphalt and grout that is damaged or has deteriorated over time. In some cases the use of high pressure water has been used to remove ‘sound’ grout that has spilled into drains during the construction process, removing the grout using the water blasting technique. The Water Jetting Association was founded to ensure that people using ultra high pressure water were well trained and followed a good code of conduct when operating at such high pressure. In the early 90’s after the Kuwait conflict, hydro demolition techniques were used to clean the oil well heads after they had been damaged, creating a clean edge to enable the well heads to be capped and made safe.