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This paper concerns a beneficial use for sustainable marine sediment management taking into account the proximity of the application, i.e. the minimal distance from dredging of sediments to the implementation. Marine fine sediments concerned are dredged from two basins of Cherbourg harbour in Normandy (West of France). After sampling, the sediments have first been characterized so as to obtain their physical and chemical properties which constitute a part of the sediment identity card. Based on these properties, port authorities have investigated solutions to reuse them as construction material. A harbour quay level or platform was considered for the Port of Cherbourg for a volume of 30000m of dredged sediments. An earthwork reusing this volume was built in Cherbourg’s port of commerce area. It was a confined embankment, around 100×100 m, inserted in a 3 m deep excavation . This confined structure was filled with the raw sieved sediments dredged from two basins of Cherbourg harbour. A 3metre high layer of coarse and gravelly soil has overloaded the sediments layer so as to consolidate it. The hydraulics properties needed for this earthwork project are given. Its technical design and surveying conditions are described. Another potential beneficial use for these marine sediments was also considered similar to a material for sub layers in road structure. The sediments might be dehydrated first and mixed with different additions of lime. Many mixtures were tested and from the obtained results it was decided to build a quay platform. Part of the structure was built and during its construction, an experimental investigation to compare sediment behavior under on site and in laboratory consolidation was performed. Results of testing in laboratory are detailed here and the different steps of the investigation are given. The geotechnical properties and parameters useful for the project are first given, some details of

A civil engineering application in sediment management: A confined embankment in Cherbourg harbour