This technology is extensively used for soil improvement and in construction works such as founding of industrial and large-size buildings, forming sealing slabs, underpinning, pile walls as well as securing of slopes and scarps. It can be applied universally in any type of soil and is perfect for urban areas, buildings and under railway and road structures.
This technology consists in mixing soil with stabilizing slurry (bonding grout), injected under a high pressure. A wall or cylindrical column is formed after bonding the grout mixed with soil. The process starts with drilling a hole with a drilling rod equipped with jetting nozzles. When the drilling pipe reaches the required depth it is pulled back while rotating and injecting the bonding grout supplied under a high pressure. This bonding grout and soil mixture forms a highly resistant and impermeable structure. Jet grouting elements may be constructed at any angle and form various configurations e.g. columns, palisades or slabs. They can also be reinforced shortly after forming the structure.
Advantages:
Rate of performance
Flexibility
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jet grouting elements may be constructed vertically, diagonally and horizontally in the ground, in a variety of available diameters and different lengths
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it enables piling or subsoil improvement in the grounds where obstacles such as old foundations, rubble, boulders and rock debris are present
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it is the only technology - besides micropiling – which enables stabilization of already existing foundations and grounds made of reinforced concrete slabs (e.g. airfields, embankments etc) without the need of dismantling
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the soil-cement elements have a high compression resistance
Environmental safety
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