Enabling single pass jet grouting

Drills through any formation

The Wassara Jet-grouting hammer enables single pass jet grouting in difficult formations.

This eliminates the need for more than one drill rig and jet grouting equipment.

As the hammer and jet monitor are powered by separate pumps, they can be controlled independently of each other.

No changing of equipment

Where stones, boulders and other obstacles have made jet-grouting complicated, Wassaras patented Jet grouting hammer makes the procedure easier.

As the drill string is complete with all necessary tools, no changing of equipment is required during the whole operation.


By pre-cutting with water or air through the nozzles during the drilling phase, it’s possible to produce larger diameter columns than with conventional single fluid jet grouting systems.

Examples of successful projects – XX 1

  • Jet-grouting columns in difficult geology in Hässleholm, Sweden

    A storage building has been constructed in Hässleholm, Sweden. The ground needed stabilization as the geology presented sand and friction …

  • Energy storage in Lund, Sweden

    A project with strict restrictions regarding the water returned to the sewage system.

  • New ground engineering hammer, tested in Södertälje Canal, Sweden

    Wassara´s new hammer developed specifically for Ground Engineering was tested in a casing advancement application during dredging works for widening …