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Communication Dans Un Congrès Année : 2022

Possible recycling of dredged sediments in earth bricks - case studies of marine, fluvial and dam sediments

Résumé

Every year, a large quantity of sediments is dredged from ports, reservoirs and waterways to maintain the efficiency of these structures. On the other hand, sediments disposal and management are becoming costly due to environmental regulations. Therefore, the reuse of sediments is increasing in different applications. The reuse of dredged sediments in building materials such as earth bricks can provide an eco-friendly alternative to manage and handle these sediments. Earth bricks are manufactured with earth and natural fibers. This research focuses on the characterization of dredged sediments for their reuse in earth bricks. The sediments used in this study are coming from Dunkerque port and a local dam in France, and Usumacinta River, Mexico. Sediments characteristics such as Atterberg limits, granulometry, carbonate content, organic matter and chemical composition were determined and sediments suitability for earth bricks was observed with French and international standards. Local (hemp shiv) and tropical plant fibers (palm oil fibers) were mixed with sediments to make earth bricks. Impact of sediments granulometry, Atterberg limits and chemical composition on tensile and compressive strength of bricks were analysed. Similarly, tensile and compressive strength variation with fibers addition was also observed. Characteristics of bricks such as density and toughness index and flexion stiffness of bricks were also observed.

Dates et versions

hal-04169569 , version 1 (24-07-2023)

Identifiants

Citer

Mazhar Hussain, Daniel Levacher, Nathalie Leblanc, Hafida Zmamou, Irini Djeran-Maigre, et al.. Possible recycling of dredged sediments in earth bricks - case studies of marine, fluvial and dam sediments. XVIIèmes Journées Nationales Génie Côtier – Génie Civil, Oct 2022, Chatou, France. pp.765-774, ⟨10.5150/jngcgc.2022.078⟩. ⟨hal-04169569⟩
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