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Advances in Concrete Construction
  Volume 4, Number 1, March 2016 , pages 15-26

Behavior of sediment from the dam FERGOUG in road construction
Assia Benaissa, Zehour Aloui, Moulay S. Ghembaza, Daniel Levacher and Yahia Sebaibi

    In Algeria, wastes are often stored in such conditions that do not meet standards. Today and more than ever, we really must implement an environmentally management of wastes. Recovery of waste in Algeria has a considerable delay due to the absence of a policy favorable to the development of waste management. But many researchers have shown the possibility to reuse dredged sediments in road construction. Through Europe, recent research works have been already performed on dam sediments. Present study fits into the context of the valorization of dredged sediments from Fergoug dam. They are found in considerable quantities and mainly composed of mineral phases, organic matters and water. The reservoir sedimentation poses problems for the environment and water storage, dredging becomes necessary. Civil engineering is a common way of recycling for such materials. Dredged sediments have not the required mechanical characteristics recommended by the standards as GTR guide (LCPC-SETRA 1992). So as to obtain mechanical performance, dredged sediment can be treated with cement, lime, or replaced materials like quarry sand. An experimental study has been conducted to determine physical and mechanical characteristics of sediments dredged from dam. Then different mixtures of sediment and/or quarry sand with hydraulic binders are proposed for improving the grain size distribution of the mixes. Finally, according these mixtures, different formulations have been tested as alternative materials with dredged sediments.
Key Words
    dredged sediment; dam sediment; valorization; road engineering; sediment characterization; mechanical behavior
Assia Benaissa, Zehour Aloui, Moulay S. Ghembaza and Yahia Sebaibi: Department of Civil Engineering, Fac.Technology, Labo. Civil Engineering & Environment (LGCE), Sidi Bel Abbes, Algeria

Daniel Levacher: Normandy University, Uni caen, Laboratoire M2C- UMR 6143 CNRS 24 rue des Tilleuls, 14000 Caen, France

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