Jet grouting
Jet Grouting is a technique where grout, usually cement based, is delivered under very high pressure through a small aperture nozzle that converts the energy to a high velocity jet of grout. This simultaneously disintegrates the existing soil structure and mixes the in-situ soil with the grout.
The distinct advantage of jet grouting is that it can be effective in all categories of soil, unlike classical grouting techniques which rely on penetration via voids in the soil mass.
Applications of Jet Grouting are several and varied, it can be used in retaining systems, to form cut-off barriers, as plugs for the bases of shaft excavations, in transition zones in tunneling, in underpinning and to create rigid soil inclusions. The essential merits of Jet Grouting are to increase strength and/or impermeability in soils
