Ground Improvement Options for Stabilization of Subgrade Soil
Sub-grade improvement is essential to the improvement of the underlying natural ground formation. Ground treatment is required in low soil locations. The naturally occurring subsoils will not support the embankment and rail system in the worse scenario. Based on additional considerations such as fill height, soil thickness and compressibility, time and expense, and other soft-ground soil treatment methods, different soft-ground soil treatment methods can be broadly classified as structural (rigid) and geotechnical solutions. Following methods of ground treatment can be adopted for various poor ground conditions: Vibratory surface compaction and Deep vibro-compaction Removal and replacement of soft cohesive deposits of limited thickness Preloading of existing soft/loose fill Preloading with vertical drains. Dynamic Replacement. Stone Column Piled Embankments in areas having soft soil to large depths Viaduct for high embankments on ground having very deep soft soils with organic deposits