Triple Fluid Jet Grouting

Published: | Updated: December 12, 2019;

Definition - What does Triple Fluid Jet Grouting mean?

Triple jet fluid grouting is a form of the trenchless technique, jet grouting. This method of jet grouting involves the simultaneous injection of high-pressure, high-velocity cementitious grout, water and compressed air ejected from the grout monitor to break down, remove and mix the in-situ surrounding soil.

Triple fluid jet grouting gets its name due to the use of three components (the cementitious grout, high-velocity water, and compressed air) to perform this operation.

Trenchlesspedia explains Triple Fluid Jet Grouting

Jet grouting is a trenchless technique that is used to improve the mechanical properties of the surrounding soil and improve its stability. It involves jetting a high-pressure, high-velocity fluid from the sides of a grout monitor attached to the end of the drill string. The fluid breaks up, extracts and mixes with the soil to form a homogenous, high-strength soil-cement column structure.

Triple fluid jet grouting utilizes a coaxial stream of high-pressure, high-velocity air and water through a common jet nozzle to erode and remove the surrounding in-situ soil. The cementitious grout mixture is then ejected through independent nozzles located below the air/water jets.

Triple fluid jet grouting is the most complex of the jet grouting techniques, however, it is capable of creating larger diameter columns and is more efficient than single and double fluid jet grouting systems.

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