About Hydrodemolition

Hydrodemolition

Hydrodemolition is a safe, fast, high quality and environmentally friendly method of performing removal of concrete, waterproofing membrane, and joint sealant from reinforced concrete structures. Hydrodemolition is the process of utilizing high-pressure water to perform concrete removal from horizontal, vertical and overhead surfaces. The hydrodemolition robots are typically programmed to remove sound concrete to a specified depth, as well as unsound concrete below the specified depth. The cutting nozzle is mounted to a beam and traverses back and forth a predetermined number of times along this beam, at a predetermined speed, during the concrete removal process.

These settings determine the depth of concrete removal. Hydrodemolition is a safe, fast, high quality and environmentally friendly method of performing removal of concrete, waterproofing membrane and joint sealant from reinforced concrete structures.

At Prepcon, the hydrodemolition water is pressurized to 20,000 psi at the high-pressure pumps and transferred to the cutting robot through specialized high pressure hoses. We custom build our cutting robots to achieve maximum production and efficiency.

Our rotating nozzles produce an ideal concrete surface for bonding a new concrete overlay. We use a variety of angled nozzles to achieve the specified depth of removal and to help minimize the amount of detail chipping required. Our hydrodemolition cutting robot fleet consists of both diesel powered and electric powered units.

Benefits Of Hydrodemolition

Hydrodemolition provides many benefits versus conventional concrete demolition. These benefits include:

  • Minimal silica dust:Since water is used to perform the concrete removal, minimal silica dust is produced during hydrodemolition.
  • Superior bonding surface: This is an ideal surface profile to provide an excellent mechanical bond of repair materials.
  • No micro-fractures: The hydrodemolition process does not produce a mechanical impact to the concrete and therefore no micro-fractures are created.
  • No structural vibration: The hydrodemolition process does not rely on mechanical impact to remove concrete. This eliminates structural vibration during concrete removal.
  • Unsound concrete removal: The hydrodemolition process relies on the water nozzle traversing at a predetermined speed to achieve sound concrete removal as well as unsound concrete removal.
  • Lower Labor Costs: Labor requirement is significantly reduced by the hydrodemolition process.