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CeTeau Vacuum Consolidation
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The innovative CeTeau Vacuo is designed to accelerate the consolidation for soft and very soft saturated fine- grained soils.
The system consists of installing prefabricated vertical drains, individually connected below the surface to vacuum transmission pipes. These pipes are than connected at surface level to a horizontal tubing system by means of specially developed airtight T-couplings. The so-called drainage screens, a row of vertical drains that are connected at the top to a horizontal line, are brought outside the surcharge (if any) and connected to a combined vacuum air pump that has been developed in-house.
The advantage of this method over the traditional sealing by geo-membrane is that leaks are fully traceable even after surcharge loading.
This loading process creates an accelerated isotropic consolidation in the soil mass in a relatively short time, eliminating the need for long-term and potentially unstable surcharge loads. The system is applicable in under the following conditions; Stability problems, No space for shallow slopes or berms, minimal allowable deformation of subsoil ( close to buildings) or Short construction time available.
Advantages of the CeTeau Vacuum Consolidation System
• A very short installation period
• Significant time reduction compared with other consolidation methods
• No liner required
• Flexible configuration due to the absence of a liner
• No border trench required, which could cause instability or horizontal deformation.
• Isotropic consolidation reduces the risk of failure under additional loading
• No risk of slope instability beyond boundaries
• Controlled rate and magnitude of loading and settlement
• Reduction in surcharge fill transportation
• No connection with underlying aquifers
• Separation of intermediate sand lenses possible
• Horizontal deformation during filling is avoided
• Large reduction in secondary settlements
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