Jet Grout Column
Jet Grout Column is a ground improvement technique that has been used in the construction industry for over three decades. It is a cost-effective and efficient way to improve the soil conditions and stability of a site prior to construction. This method involves injecting grout columns into the ground, which are then filled with concrete or other materials to improve the soil’s bearing capacity and reduce settlement. Jet grouting can also be used to create underground walls or barriers, which can be used for water control or as part of an underground structure. This method is particularly useful in areas where traditional excavation methods are not feasible, such as in soft soils or areas with limited access. Jet Grout Columns provide an economical solution for improving soil conditions prior to construction, and can help ensure long-term stability of structures built on the site.
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- One of the semi-rigid inclusion method
- High-velocity water-cement paste is injected through the horizontal nozzle(s) of the rod, which breaks down the soil matrix. The jet erodes and mixes the in-situ soil with grout and upward rotates to form a mixture of soil-cement composite
- Capable to improve wild range of soil types from gravel to clay
- Suitable to construct in limited space / dense urban area, where unwanted effects are not preferred, without interrupting nearby existing structure due to lower vibration
- Able to create large cement column without causing huge ground disturbances
Major types of jet grouting methods
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