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Fiber-to-mortar bond behavior in TRM composites: effect of embedded length and fiber configuration

Dalalbashi, Ali; Ghiassi, Bahman; Oliveira, Daniel V.; Freitas, Ana

Fiber-to-mortar bond behavior in TRM composites: effect of embedded length and fiber configuration Thumbnail


Authors

Ali Dalalbashi

Bahman Ghiassi

Daniel V. Oliveira

Ana Freitas



Abstract

The use of Textile Reinforced Mortar (TRM) composites for Externally Bonded Reinforcement (EBR) of reinforced concrete (RC) and masonry structures has attracted several attentions during the last years. The effectiveness of these composites in structural reinforcement is significantly dependent on the TRM-to-substrate and the fiber-to-mortar bond behavior. Despite the importance of the latter, that controls the crack distribution on these composites, have received few attentions and is relatively unknown.

This paper presents a combined experimental and analytical study on the effect of fiber-embedded length and configuration on the pull-out response. From the obtained results, bond-slip laws are proposed for TRM composites made of unidirectional and bidirectional grids. The tests are performed on a (unidirectional) steel-based and a (bidirectional) glass-based TRM composite as common reinforcing systems. A comparison is also made between the results obtained from single-fiber pull-out tests and conventional single-lap shear bond tests to highlight the differences/similarities between these two test methods.

Citation

Dalalbashi, A., Ghiassi, B., Oliveira, D. V., & Freitas, A. (2018). Fiber-to-mortar bond behavior in TRM composites: effect of embedded length and fiber configuration. Composites Part B: Engineering, 152, 43-57. https://doi.org/10.1016/j.compositesb.2018.06.014

Journal Article Type Article
Acceptance Date Jun 16, 2018
Online Publication Date Jun 19, 2018
Publication Date Nov 1, 2018
Deposit Date Jun 22, 2018
Publicly Available Date Mar 29, 2024
Journal Composites Part B: Engineering
Print ISSN 1359-8368
Electronic ISSN 1359-8368
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 152
Pages 43-57
DOI https://doi.org/10.1016/j.compositesb.2018.06.014
Keywords Fiber/matrix bond; Pull-out testing; Mechanical testing; Analytical modeling
Public URL https://nottingham-repository.worktribe.com/output/939238
Publisher URL https://www.sciencedirect.com/science/article/pii/S1359836818309673

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