PHYSICAL EVALUATION OF THE HYDRODYNAMIC STABILITY OF AN ECO-ENGINEERED ARMOURING UNIT

Jorge Gutiérrez Martínez, Maor Bezner, Auke Molenkamp, Jeroen v.d. Bos, Bas Hofland, Philippe Leblanc, Andrew Rella, Yaeli Rosenberg, Ido Sella

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

ECOncrete®'s Coastalock is an ecologically designed armour unit, providing an alternative and/or a complement to traditional armour layers with ecologically enhanced armouring that provides shoreline stabilization, while also creating well-defined local ecosystems that mimic natural rock pools. The 2D physical model tests performed at TU Delft focused on the stability, reflection and overtopping of a slope with regularly placed single layer Coastalock armour. The 2V:3H slope had an impermeable core, no wave breaking on the foreshore and no rock toe. The stability was seen to double, with stability number Ns (Ns= Hs/ΔDn50) increasing from roughly 2 to 4 and above, by increasing the porosity between the blocks from spacing the units from 0% to 25%. So less concrete use led to more stability. The mean overtopping discharge could be characterized by a roughness factor of gamma_f = 0.610 (for 25% spacing). A key goal of the Coastalock development is to demonstrate that with the use of innovative eco-engineered armour unit design it is now possible to add ecological considerations into the design process to promote biodiversity and provide ecosystem services, achieving both structural and ecological goals.

Original languageEnglish
Title of host publicationProceedings of the Coastal Engineering Conference
EditorsDaniel Cox
PublisherAmerican Society of Civil Engineers (ASCE)
Edition37
ISBN (Electronic)9780989661164
StatePublished - 1 Sep 2023
Externally publishedYes
Event37th International Conference on Coastal Engineering, ICCE 2022 - Sydney, Australia
Duration: 4 Dec 20229 Dec 2022

Publication series

NameProceedings of the Coastal Engineering Conference
Number37
ISSN (Print)0161-3782

Conference

Conference37th International Conference on Coastal Engineering, ICCE 2022
Country/TerritoryAustralia
CitySydney
Period4/12/229/12/22

Bibliographical note

Publisher Copyright:
© 2023 American Society of Civil Engineers (ASCE). All rights reserved.

Keywords

  • Nature Inclusive Design (NID)
  • biodiversity
  • bioenhancing concrete
  • coastal protection
  • ecological engineering
  • marine habitat
  • physical modelling
  • single layer armour unit

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