@article{c4ef06849e6446919d1374619564525a,
title = "Non-destructive evaluation of ductile-porous versus brittle 3D printed vascular networks in self-healing concrete",
abstract = "Additive manufacturing (AM) can produce complex vascular network configurations, yet limited testing has been done to characterize the damage and healing behavior of concrete with embedded networks for self-healing. In this study, different AM methods and network wall materials were used to produce vascular networks for self-healing concrete prisms, where their load-response behavior, healing efficiency and microstructure were evaluated using non-destructive techniques: acoustic emission (AE), ultrasonic pulse velocity (UPV), digital image correlation (DIC), and X -ray computed tomography (CT). The types of healing agent release mechanisms that were studied include a ductile-porous network that supplies fluid from its pores and a brittle network that fractures under load to release fluid. DIC coupled with AE verified debonding of ductile-porous networks from the cementitious matrix, and was able to track damage progression as well as healing for all networks with load regains up to 56 % and stiffness regains up to 91 % using polyurethane.",
keywords = "Vascular networks, Self-healing concrete, 3D printing, Non-destructive testing",
author = "Yasmina Shields and Eleni Tsangouri and Claire Riordan and {De Nardi}, Cristina and {Assun{\c c}{\~a}o Godinho}, {Jose Ricardo} and Ticho Ooms and Paola Antonaci and Dave Palmer and Abir Al-Tabbaa and Tony Jefferson and {De Belie}, Nele and {Van Tittelboom}, Kim",
note = "Funding Information: This work acknowledges funding from the SMARTINCS project . This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement no. 860006 . CT results were granted via the EXCITE network, which received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 101005611 . This work also acknowledges Leverhulme Trust ECF-2022-235. Funding Information: This work acknowledges funding from the SMARTINCS project. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement no. 860006. CT results were granted via the EXCITE network, which received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 101005611. This work also acknowledges Leverhulme Trust ECF-2022-235. Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",
year = "2024",
month = jan,
doi = "10.1016/j.cemconcomp.2023.105333",
language = "English",
volume = "145",
journal = "Cement and Concrete Composites",
issn = "0958-9465",
publisher = "Elsevier Limited",
}