Regulatory framework for the beneficial reuse of dredged sediments as construction materials: A case study in Morocco

Bortali, Meryem; Rabouli, Mohamed; Yessari, Madiha; Errouhi, Ahmed Ait; Zejli, Driss; Hajjaji, Abdelowahed

doi:10.1016/j.matpr.2022.06.316

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…The enormous quantities of sediment are explained by the presence of anthropogenic activities occurring naturally [21]. Considered as waste [23], dredged sediment is often disposed of into the sea [24], causing adverse consequences on the aquatic environment and human well-being [17,[25][26][27][28][29][30]. Given the increasing legal requirements regarding sediment management, conventional methods or the "no-action" option are no longer viable for economic, environmental and social plans [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

“…It requires a case-by-case basis in order to determine the required characteristics of sediment extracted from the study site [27]. Characterizing the dredged sediment is therefore considered as an essential phase towards identifying the possible recycling paths of sediment [23,35]. This constitutes a primordial and decisive step in the valorization process [97,98].…”

Section: Introductionmentioning

confidence: 99%

“…Developed and developing countries have quite divergent concerns; while in developing countries the pursuit of more cost-effective development opportunities frequently overrides environmental considerations and concerns, developed countries are often economically strong and able to place a higher emphasis on sustainable development and environmental issues [29,98,[105][106][107][108]. Such an approach to complete and full characterization is not applicable in developing countries; in addition to the legal gap in which dredged sediment management does not mandate any type of characterization [23,56,109], it requires an investment in terms of cost, time and advanced techniques for conducting all types of laboratory tests. The number and complexity of characterization tests are an obstacle to the valorization process in developing countries.…”

Section: Introductionmentioning

confidence: 99%

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Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

et al. 2023

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An unprecedented rate of construction has profoundly increased the risk of scarcity of natural resources and threatened ecosystem sustainability. To establish an effective sustainable development policy, it is imperative to promote the use of responsible production channels, including waste recycling. Reuse of harbor dredged sediment is commonly investigated as a valuable alternative to non-renewable natural resources needed for construction. Sediment characterization is decisive in the valorization process, aiming to identify potential recycling paths. Existing research efforts, however, have rarely investigated case studies in developing countries. Moreover, they have tended to focus on the technical aspects, ignoring economic feasibility, which carries important implications. This paper fills this gap first by meticulously selecting laboratory tests for characterization within the means available in developing countries and second by conducting a cost-benefit analysis. The port of Safi, Morocco, was chosen for the implementation of the adopted approach. Results showed that dredged sediment is a sand readily reusable as a construction aggregate. Several applications are possible, the most interesting one being concrete works, as a substitute for conventional sand. While treatment by washing and dehydrating proved necessary, cost-benefit analysis confirmed the profitability of recycling. Hence, beneficial reuse of dredged sediment as construction material is technically and economically feasible.

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