Bored piles


Pile trimming

The trimming eliminates the polluted/dirty concrete and a minimum of sound concrete above the cut-off level, over the full cross section of a pile (Standard EN 1536: Execution of special geotechnical works: bored piles). Trimming shall be carried out without damaging the concrete, reinforcement and instrumentation of the pile. The […]


Reverse circulation drilling

“The reverse circulation drilling is generally used for large diameter piles and consists of returning the drilled material and flushing medium to the surface inside the drill pipes. The pressure and flow of the drilling fluid at, and immediately behind, the drilling bit effectively flushes the drilled material away from […]