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Rubberised concrete confined with thin-walled steel profiles: a ductile composite for building structures.

Jafarifar, Naeimeh; Bagheri Sabbagh, Alireza; Uchehara, Ikechukwu

Authors

Alireza Bagheri Sabbagh

Ikechukwu Uchehara



Abstract

Tyre components are high-quality materials, which can be utilised and disposed into construction projects. Despite its high ductility and impact resistance, rubberised concrete (RuC) with high rubber content has a strength much lower than that of conventional concrete. Previous research shows that confinement by a jacket material can significantly improve the strength of RuC. This paper presents how infilling RuC to cold-formed steel (CFS) sections improves strength of RuC and local-buckling-resistance of CFS thin-walled sections, resulting in composite elements where the advantage of each material cancels out the disadvantage of another. In this research, composite RuC-CFS elements are developed and tested with the purpose of using them for structural frames with high energy dissipation capacity under extreme loading conditions, while providing resource-efficiency by using lightweight CFS and recycled RuC materials. To enable infilling of long steel hollow sections for beams and columns, the experimental RuC mixes are designed for self-compaction (SCC). The results reveal that 35% rubber content (by volume) and 3mm thickness of the CFS profile (S275 grade) gives the best performance of the composite by adding 19% to the capacity of the individual constitute materials.

Citation

JAFARIFAR, N., BAGHERI SABBAGH, A. and UCHEHARA, I. 2023. Rubberised concrete confined with thin-walled steel profiles: a ductile composite for building structures. Structures [online], 49, pages 983-994. Available from: https://doi.org/10.1016/j.istruc.2023.01.134

Journal Article Type Article
Acceptance Date Jan 25, 2023
Online Publication Date Feb 9, 2023
Publication Date Mar 31, 2023
Deposit Date Jan 30, 2023
Publicly Available Date Jan 30, 2023
Journal Structures
Print ISSN 2352-0124
Electronic ISSN 2352-0124
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 49
Pages 983-994
DOI https://doi.org/10.1016/j.istruc.2023.01.134
Keywords Rubberised concrete; Cold-formed steel; Composite structures; Low-carbon structures; Ductility
Public URL https://rgu-repository.worktribe.com/output/1871115

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