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Valorization of harbor dredged sediment activated with blast furnace slag in road layers

International Journal of Sediment Research 2021年第1期36卷 127-135页

作者： Abdelwaheb Ben Slama Nesma Feki daniel levacher Moncef Zairi Laboratory “Water Energy and Environment” (LR3E) National Engineering School of Sfax Faculty of Science University of Sfax University of Caen-Normandie

The valorization solutions for dredged sediment have been the subject of a great number of investigations over the previous *** the current present study,treatment of polluted dredged sediment for the commercial port of Sfax,Tunisia,is *** industrial byproduct(blast furnace slag) was used to bind raw sediment for a reuse in road *** standards of this field,the raw sediment first was identified and classified according to the French technical *** an environmental assessment was applied due to the presence of heavy *** concentrations were measured on the raw sediment particles so as to control the binding effect on heavy *** mixtures consisted of a mix of sand and a blast furnace slag activated with *** mixtures were tested and some were proposed for sub-layer *** Sfax commercial port raw sediment is considered as a sandy loam with a very low fraction of *** measured concentrations of heavy metals exceed the recommended thresholds for cadmium,copper,lead,and *** can induce hazardous effects in the case of their dumping into the *** the other hand,the concentrations of the detected elements after leaching tests run on raw sediment samples are very low compared to the thresholds;such results highlight a possible recycling of the raw sediment in subgrade layers without any negative *** formulations were deduced for road engineering tests relying on the ratio the California Bearing Ratio index and the immediate bearing *** the obtained ratio exceeds one,the treated sediment can be recycled and used in road layers.

关键词： Sediment Sfax commercial port Blast furnace slag Valorization Road layers Bearing capacity

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