20. Grouting
Various soil improvement techniques are crucial for enhancing liquefiable ground stability, particularly with low vibration methods that include compaction, permeation, and jet grouting. Each technique addresses specific needs such as increasing soil density, waterproofing, and reducing liquefaction risks, thereby ensuring structural safety in urban environments and under existing infrastructure.
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What we have learnt
- Compaction grouting effectively improves soil density and mitigates liquefaction risk.
- Permeation grouting strengthens soils and controls groundwater migration while preserving soil structure.
- Jet grouting is versatile for excavation support and stabilization of liquefiable soils, especially in earthquake-prone areas.
Key Concepts
- -- Compaction Grouting
- A technique involving the injection of stiff grout to increase soil density and stability without permeating native soil.
- -- Permeation Grouting
- A method where low-viscosity fluids are injected to fill soil voids for stabilization and waterproofing while maintaining soil structure.
- -- Jet Grouting
- A high-pressure soil injection method that replaces existing soil with a cement mixture, useful for support and stabilization.
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