16. Stabilization Of Soil
The chapter discusses the stabilization and modification of soils in road construction, emphasizing the importance of creating a stable subgrade to support construction activities and enhance pavement effectiveness. It differentiates between soil modification, aimed at creating a working platform, and soil stabilization, which increases the strength of subgrades for long-term pavement performance. Various techniques are explored, including mechanical stabilization and geosynthetic reinforcement, alongside requirements and guidelines for implementation in engineering practices.
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What we have learnt
- Soil stabilization and modification are crucial for constructing durable roadbeds.
- Mechanical stabilization enhances soil properties through gradation alterations and compacted granular layers.
- Geosynthetic stabilization using materials like geogrids can significantly improve pavement performance.
Key Concepts
- -- Soil Modification
- The process of altering soil characteristics to create a working platform for construction, without affecting pavement design credit.
- -- Soil Stabilization
- Enhancing the strength of subgrade soils to support loads and impacting pavement design process.
- -- Geogrids
- Reinforcement materials that improve the performance of road sections through mechanisms such as tensile reinforcement and separation.
- -- Mechanical Stabilization
- A method that modifies soil properties by mixing with other soils or replacing wet soils with granular materials.
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