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The so-called “Compaction Grouting” technique is now being used in France under various names. Due to a large research programme launched a few years ago, Soletanche was in a position to develop a more scientific approach to this process when it is used as a soil improvement method.
This paper describes the various rules used for design with their background and gives an example of a lateral static densification job.
The positive role of microshearing in sandy soil and that of solid mortar columns in clayey soils is described.
soil improvement, compaction grouting, densification, reinforcement, cavity expansion, potential of liquefaction, settlement
head of the soil improvement department, Soletanche Entreprise, Nanterre,