Jet grouting

Deep foundations

Jet grouting

Jet grouting is a foundation process injecting cement grout under very high pressure into the soil through nozzles that create a jet effect. The jet effect is used to disrupt the soil and mix the injected grout with the soil in place. There are three Jet grouting methods that differ in the number of fluids injected simultaneously.


The monojet is an injection of cement grout, the twin-jet is an injection of cement grout and air and the tri-jet is an injection of grout cement, air and water.



On-site instrumentation measures and records in a simple, reliable and precise way:

  • The depth
  • Moving speed
  • The distance of the step
  • Station time
  • Rotation speed
  • The angle (sector) of treatment
  • The rotation torque
  • The pressure on the tool
  • The pressure and flow of the grout
  • Pressure and flow of the water
  • The pressure and flow of the air
  • Inclination X and Y
  • The deviation of the column


Jet grouting devices are built with particularly robust materials and protected by stainless steel weatherproof housings:

  • The DIALOG MX 
  • The CINTAC
  • The BAP

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The recording of the various parameters is performed by specific sensors:

  • The P82 for the depth
  • The VR28 for rotational speed
  • The C16 400 for thrust, restraint and torque
  • The C16 400 associated with the RHTC16 for the blow of pump
  • The C16 M associated with SP 100H for grout pressure, flow rate and calculated grout volume
  • The AT50 C for flow and air pressure
  • The TIGOR for the deviation
  • The ANTOISE for the inclination

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Rotation (Option)


Technical diagram and results layout

Hover the diagram for more details