A large-scale demonstration and sustainability evaluation of ductile-porous vascular networks for self-healing concrete

Shields, Yasmina, di Summa, Davide, Ospitia, Nicolas, Herrier, Gontran, Schlangen, Erik, Jefferson, Tony ORCID: https://orcid.org/0000-0002-2050-2521, De Belie, Nele and Van Tittelboom, Kim 2024. A large-scale demonstration and sustainability evaluation of ductile-porous vascular networks for self-healing concrete. Journal of Building Engineering 95 , 110040. 10.1016/j.jobe.2024.110040 Item availability restricted.

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Abstract

Self-healing cementitious materials show potential to reduce material consumption, maintenance costs, and environmental impacts within the construction sector. This study explores the feasibility of installing a ductile-porous vascular network in a series of retaining walls under realistic construction conditions, with the objective of both assessing the efficacy of the self-healing system and addressing any constructability issues that may arise. Numerical modeling was performed first to determine a suitable mix design and wall configuration that would promote cracking, so cracks would appear without mechanical intervention. The predicted crack distribution informed the optimal network configuration. Healing and sustainability considerations are discussed, and the benefits of implementing this technology are evaluated. When comparing a single maintenance activity using a vascular network versus manual repair, there is no significant benefit of using a vascular network. However, environmental impacts are substantially reduced when using a vascular network once multiple repair actions are considered.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Additional Information:	License information from Publisher: LICENSE 1: Title: This article is under embargo with an end date yet to be finalised.
Publisher:	Elsevier
ISSN:	2352-7102
Date of First Compliant Deposit:	26 June 2024
Date of Acceptance:	22 June 2024
Last Modified:	08 Nov 2024 18:45
URI:	https://orca.cardiff.ac.uk/id/eprint/170119

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