GeoConcrete® Column System

Geopier GeoConcrete® Columns (GCCs) are unique in that they are not constructed in lifts like our RAP systems.  Instead, they consist of a concrete base “bulb” overlain by an extruded column of concrete.   One of the most interesting aspects of GCCs is that the concrete is placed in an airtight (or closed) system.  This allows for a higher degree of quality control during installation as changes in pressure directly correlate to how much concrete is placed during each phase of construction.  These concrete column foundations provide excellent settlement control and high bearing pressures for heavy loads in any soil profile.

• Organic soils or very soft clays and silts
• Marginal soils for heavily loaded structures

The Geopier GeoConcrete® Column installation starts with calibration of the pump and mandrel system to allow for robust quality control during installation.  Once calibrated, the mandrel is advanced to the desired design depth/bearing layer.  The mandrel is then withdrawn and redriven several times to create a large concrete base.  Once the base is constructed, the mandrel is slowly withdrawn to create a continuous column of concrete between the base and the overlying foundation.  The air pressure within the system is monitored and recorded during construction to verify that a high-quality, contiguous rigid inclusion element has been constructed.    

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