Should the migration of soil fines into non-grouted compacted stone columns be considered during design if the stone columns are expected to penetrate fill comprised of sand with less than 15% fines and terminate at the top of a dense native sand stratum? The stone columns will be constructed using 3/4-inch clean, angular, uniform stone.
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Ground Improvement Question - Migration of Fines into Compacted Stone Columns / Aggregate Piers
- Thread starter Blairsy
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What is the construction process for the stone columns in question: vibro-replacement or open hole (traditionally called Rammed Aggregate Piers)
Are the stone columns purely for ground improvement (say, for increased allowable pressure at foundation contact) or for drainage also?
The boundary between the new clean crushed rock and the existing soil will not be neat, and the boundary will certainly be dirty. This is usually not a problem for stone column application, unless drainage is the primary function.
Are the stone columns purely for ground improvement (say, for increased allowable pressure at foundation contact) or for drainage also?
The boundary between the new clean crushed rock and the existing soil will not be neat, and the boundary will certainly be dirty. This is usually not a problem for stone column application, unless drainage is the primary function.
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