Stone column (for ground improvement)
DURMEYER S.A.S
The ballastées columns are put in %u0153uvre in grounds being able to offer a certain lateral confinement to the column. These columns cannot in no case to be installation in grounds undergoing of the voluminal deformations during time (recent fill, mud-bound peats, vases, clays, organic grounds anthropiques%u2026).
We employ the technique of the hopper vibrator. The method for realization d%u2019une column is the following:
The vibrator is descended to l%u2019aide d%u2019un fluid from launching jusqu%u2019à the qualified layer and the ballast is conveyed jusqu%u2019à the base of the vibrator with l%u2019aide d%u2019un side tube. The column is then built by the compaction of the ballast by going up master keys of 0,5 m height l%u2019ordre.
This technique allows, inter alia, to reduce compressings of l%u2019ouvrage but not to remove them.
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