Every year, significant volumes of marine sediment are dredged from the harbour of Received 26 November 2018 Dunkirk, France. These materials may in fact be used beneficially in the composition of new Received in revised form 19 April 2019 concrete accropode blocks to protect the harbour coastline. Accepted 6 May 2019 This paper evaluates the mechanical behaviour and durability of accropode blocks composed of concrete and dredged fine sediments after three years of storage on a dock at port of Dunkirk. A description of accropode blocks, a coring campaign and characterisation of cylindrical core samples are presented and discussed. To assess the durability of the concrete, a battery of accelerated tests is performed. The mechanical properties of various.
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