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Optimisation of 3D printed concrete for artificial reefs: Biofouling and mechanical analysis.

Ly, O., Yoris-Nobile, A. I., Sebaibi, N., Blanco-Fernandez, E., Boutouil, M., Castro-Fresno, D., Hall, A. E., Herbert, R. J. H., Deboucha, W., Reis, B., Franco, J. N., Teresa Borges, M., Sousa-Pinto, I., van der Linden, P. and Stafford, R., 2021. Optimisation of 3D printed concrete for artificial reefs: Biofouling and mechanical analysis. Construction and Building Materials, 272, 121649.

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DOI: 10.1016/j.conbuildmat.2020.121649

Abstract

Protection, restoration, and regeneration of aquatic habitats are an increasingly important issue and are requiring intensive research. In the marine environment, artificial reefs may be deployed to help offset habitat loss, increase local biodiversity and stimulate the recovery of ecosystems. This study aimed at the fabrication of artificial reefs by 3D printing. In the framework of the European INTERREG Atlantic Area collaborative project “3DPARE”, six printed concrete formulations with limited environmental impact, based on geopolymer or cement CEM III binders and recycled sands, were immersed in the Atlantic along British, French, Portuguese and Spanish coasts. The colonisation of the concrete samples by micro- and macroorganisms and their durability were assessed after 1, 3 and 6 months of immersion. Results showed that both parameters were better with CEM III compared to geopolymer-based formulations. Therefore the use of CEM III should be prioritised over these geopolymer binders in 3D printed concrete for artificial reef applications.

Item Type:Article
ISSN:0950-0618
Uncontrolled Keywords:Artificial reef; 3D printing; Bio-receptive concrete; Geopolymer; Cement; Biofouling; Eco-engineering
Group:Faculty of Science & Technology
ID Code:34985
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:21 Dec 2020 15:22
Last Modified:15 Aug 2021 08:27

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