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Influence of the Intrinsic Characteristics of Cementitious Materials on Biofouling in the Marine Environment

Author

Listed:
  • Mahmoud Hayek

    (LMGC, IMT Mines Alès, University of Montpellier, CNRS, 30100 Alès, France)

  • Marie Salgues

    (LMGC, IMT Mines Alès, University of Montpellier, CNRS, 30100 Alès, France)

  • Jean-Claude Souche

    (LMGC, IMT Mines Alès, University of Montpellier, CNRS, 30100 Alès, France)

  • Etienne Cunge

    (ARTELIA, 6 rue de Lorraine, 38432 Echirolles, France)

  • Cyril Giraudel

    (ARTELIA, 6 rue de Lorraine, 38432 Echirolles, France)

  • Osanne Paireau

    (ARTELIA, 6 rue de Lorraine, 38432 Echirolles, France)

Abstract

Coastal marine ecosystems provide essential benefits and services to humanity, but many are rapidly degrading. Human activities are leading to significant land take along coastlines and to major changes in ecosystems. Ecological engineering tools capable of promoting large-scale restoration of coastal ecosystems are needed today in the face of intensifying climatic stress and human activities. Concrete is one of the materials most commonly used in the construction of coastal and marine infrastructure. Immersed in seawater, concretes are rapidly colonized by microorganisms and macroorganisms. Surface colonization and subsequent biofilm and biofouling formation provide numerous advantages to these organisms and support critical ecological and biogeochemical functions in the changing marine environment. The new challenge of the 21st century is to develop innovative concretes that, in addition to their usual properties, provide improved bioreceptivity in order to enhance marine biodiversity. The aim of this study is to master and clarify the intrinsic parameters that influence the bioreceptivity (biocolonization) of cementitious materials in the marine environment. By coupling biofilm (culture-based methods) and biofouling (image-analysis-based method and wet-/dry-weight biomass measurement) quantification techniques, this study showed that the application of a curing compound to the concrete surface reduced the biocolonization of cementitious materials in seawater, whereas green formwork oil had the opposite effect. This study also found that certain surface conditions (faceted and patterned surface, rough surface) promote the bacterial and macroorganism colonization of cementitious materials. Among the parameters examined, surface roughness proved to be the factor that promotes biocolonization most effectively. These results could be taken up in future recommendations to enable engineers to eco-design more eco-friendly marine infrastructure and develop green-engineering projects.

Suggested Citation

  • Mahmoud Hayek & Marie Salgues & Jean-Claude Souche & Etienne Cunge & Cyril Giraudel & Osanne Paireau, 2021. "Influence of the Intrinsic Characteristics of Cementitious Materials on Biofouling in the Marine Environment," Sustainability, MDPI, vol. 13(5), pages 1-23, March.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:5:p:2625-:d:508514
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    References listed on IDEAS

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    1. Samay Pande & Shraddha Shitut & Lisa Freund & Martin Westermann & Felix Bertels & Claudia Colesie & Ilka B. Bischofs & Christian Kost, 2015. "Metabolic cross-feeding via intercellular nanotubes among bacteria," Nature Communications, Nature, vol. 6(1), pages 1-13, May.
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    Cited by:

    1. Bangwen Lu & Changwu Liu & Jungang Guo & Naiqi Feng, 2023. "Study on Physical and Mechanical Properties of High-Water Material Made by Seawater," Sustainability, MDPI, vol. 15(4), pages 1-13, February.

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