Huge amount of sediments has made it inevitable to think about managing and valorizing these quantities. As confirmed by several authors, there are mainly four types techniques of dehydration; natural dehydration chemical, thermal and the mechanical methods. It appeared to be that the natural method is the best when economic and environmental impacts are involved. Thus, in this work focus was given on natural dehydration of some sediments by doing the follow up of some physical characteristic when undergoing the dewatering. More importantly, considering these soils behavior, which is similar to the one of a colloidal and compressible soil, and regarding shear strength significance when determining soil, banks and foundations stability, it was viewed paramount to monitor this parameter while dewatering the sediments.


There are diverse impacts of sediment deposition in hydroelectric power. Precisely and as confirmed Anger et al(2012)they could be either on hydropower operations, which mainly consist of reducing the available storage capacity and river range variation and disturbing the operating machine plant functioning or on uses and users; which consist of; modifying the river profile resulting in flooding or bringing to visual or olfactory problem …

The considerable amounts of sediments in France; about 55 m3 per year has made it essential to valorize these deposited materials by exploiting them as filling material for rehabilitation of quarries or port facilities, sub base layer and road construction as stated byLevacher (2000) and Boutouil &Levacher (2000).

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