Latest Ground Improvement Techniques & Vacuum Consolidation of Soft Soil:
- Vibro Compaction;
- Vacuum Consolidation;
- Preloading of soil;
- Mechanically stabilized earth structures;
- Soil nailing;
- Micro-piles;
- Grouting;
- Soil stabilization by heating or vitrification;
- Ground freezing;
- Vibro-replacement stone columns.
Following are the recent methods of ground improvement Techniques used for stabilization of the soft soil improvement:
Applications of Vacuum Consolidation of Soft Soil:
- Replace standard preloading techniques eliminating the risk of failure.
- Combine with a water preloading in scare fill area. The method is used to build large developments on thick compressible soil.
- Combine with embankment pre-load using the increased stability
Preloading or Pre-Compression of Soil for Ground Improvement:
Applications of Preloading of Soil
Applications of Preloading of Soil
- Reduce post-construction
- Settlement
- Reduce secondary compression.
- Densification
- Improve bearing capacity
Vaccum reloading has been used for many years without change in the method or application to improve soft soil properties. Preloading or pre-compression is the process of placing additional vertical stress on a compressible soil to remove pore water over time.
The pore water dissipation reduces the total volume causing settlement. Surcharging preloading is an economical method for ground improvement. However, the consolidation of the soils is time dependent, delaying construction projects making it a non-feasible alternative.
The soft soils treated are Organic silt, Varved silts and clays, soft clay, Dredged material The design considerations which should be made are bearing capacity, Slope stability, Degree of consolidation.
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