A 3D coupled finite element model for self-healing quasi-brittle materials

Freeman, Brubeck and Jefferson, Anthony ORCID: https://orcid.org/0000-0002-2050-2521 2024. A 3D coupled finite element model for self-healing quasi-brittle materials. Presented at: Cardiff University Engineering Research Conference 2023, Cardiff, UK, 12-14 July 2023. Published in: Spezi, Emiliano and Bray, Michaela eds. Proceedings of the Cardiff University Engineering Research Conference 2023. Cardiff: Cardiff University Press, pp. 29-33. 10.18573/conf1.h

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Abstract

This study presents an overview of a 3D coupled finite element model for self-healing quasi-brittle materials. The model was developed alongside a linked experimental programme such that model components were formulated based on observed material behaviour and physical processes. The mechanical model comprises an embedded strong discontinuity element for representing discrete macro-cracks and a linked damage-healing cohesive-zone model. This is coupled to a transport model that simulates the reactive transport of healing agents in both discrete macro-cracks and the surrounding matrix material. For the simulation of the healing reaction that governs crack sealing and mechanical regain, a generalised healing front model is employed. The performance of the model is demonstrated through the consideration of the healing of a cementitious specimen. The results show that the model can accurately reproduce the crack filling predicted by a cement hydration model, and naturally accounts for the effect of healing period and crack width.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Subjects:	Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction T Technology > TP Chemical technology
Additional Information:	Contents are extended abstracts of papers, not full papers
Publisher:	Cardiff University Press
ISBN:	978-1-9116-5349-3
Funders:	EPSRC
Date of First Compliant Deposit:	10 June 2024
Date of Acceptance:	2024
Last Modified:	26 Jul 2024 13:55
URI:	https://orca.cardiff.ac.uk/id/eprint/169672

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