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New software for the optimization of the formulation and the treatment of dredged sediments for utilization in civil engineering

  • Sediments as a Dynamic Natural Resource – From Catchment to Open Sea
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Journal of Soils and Sediments Aims and scope Submit manuscript

Abstract

Purpose

The objective of our work was to develop a software for the optimization of the processes of treatment and formulation of dredged sediments for utilization in civil engineering applications. The software proposes an optimal solution that meets the different technical and environmental requirements of sediment utilization at a lower cost.

Materials and methods

The software development consisted of defining the technical and environmental constraints that the sediments must comply with to be used in one of the four applications targeted in this work: road technique, dikes, concrete, and agricultural spreading. Boundary values were determined according to the current national regulations (France, Belgium, the Netherlands, and the United Kingdom) for each type of application. The constraints were modeled by equations, and then introduced into the software. Economical aspects were also taken into account in the optimization process, with an assessment of costs related to dredging operations, natural materials, treatment, and transportation. In order to validate the computation model of the software, a simulation of the construction of a road based on three sediments was performed.

Results and discussion

The aim of this work was to provide decision makers with simple and interactive software which will facilitate the management and the utilization of dredged sediments in civil engineering. The software proposed the mixture of three types of dredged sediments (30.29%) and sand (69.69%). The software also proposed treatments to reduce the organic matter content of the sediment and the amount of chemical elements that exceed the environmental thresholds defined by regulations. An estimate of the overall cost and of the detailed cost related to the sediment utilization was also proposed by the software.

Conclusions

The presented software is a tool for optimizing the utilization and treatment of dredged sediments in civil engineering works. The technical and environmental constraints were modeled as well as the costs of each step of the sediment utilization. This allowed proposing the optimal solution that meets different technical and environmental requirements at a lower cost. The software has been tested during a road construction in Lille, France, and results confirmed the reliability of the solution proposed by the software.

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Acknowledgments

This work was carried out in the framework of USAR project. It was partly funded by the European Regional Development Fund as an Interreg 2 Seas project. As a partner, IMT Lille Douai thanks the USAR project partners for their contributions.

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Authors and Affiliations

  1. IMT Lille Douai, ULR 4515 - LGCgE, Laboratoire de Génie Civil et géo-Environnement, 764 Bd Lahure, BP 10838, 59500, Douai, France

    Ahmed Zeraoui, Mahfoud Benzerzour, Walid Maherzi & Nor-Edine Abriak

  2. OVALE, 6 bis rue du château d’eau, 62490, Noyelles-sous-Bellonne, France

    Raid Mansi

Authors
  1. Ahmed Zeraoui
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  2. Mahfoud Benzerzour
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  3. Walid Maherzi
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  4. Raid Mansi
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  5. Nor-Edine Abriak
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Correspondence to Ahmed Zeraoui.

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Zeraoui, A., Benzerzour, M., Maherzi, W. et al. New software for the optimization of the formulation and the treatment of dredged sediments for utilization in civil engineering. J Soils Sediments 20, 2709–2716 (2020). https://doi.org/10.1007/s11368-020-02605-3

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  • DOI: https://doi.org/10.1007/s11368-020-02605-3

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