Loading...
Compressive characteristics of perforated re-entrant auxetic steel honeycomb–mortar composite
Hajsadeghi, Mohammad Jayasinghe, Amila Vinai, Raffaele Kripakaran, Prakash Orr, John Evans, Ken
Hajsadeghi, Mohammad
Jayasinghe, Amila
Vinai, Raffaele
Kripakaran, Prakash
Orr, John
Evans, Ken
Editors
Other contributors
Affiliation
Epub Date
Issue Date
2025-01-09
Submitted date
Subjects
Alternative
Abstract
The possibility of achieving auxetic behaviour in conventional materials is currently attracting significant research interests in the form of auxetically enhanced cementitious composites and, especially, in re-entrant honeycomb structures. Most studies on the behaviour of re-entrant steel honeycomb auxetic reinforcement for concrete focus on achieving uniplanar auxetic behaviour perpendicular to the direction of loading. This study focuses on investigating multi-planar auxetic behaviour throughout the composite. The auxetic behaviour was achieved by perforating the steel sheets before making the re-entrant honeycomb structures. The re-entrant honeycomb was fabricated by folding mild steel strips 70 mm wide into a re-entrant profile and welding the strips onto one another. Three types of perforations were investigated, representing three categories of samples: circular perforation, orthogonal elliptic perforations and orthogonal peanut perforations. The perforated samples were compared to the non-perforated re-entrant honeycomb (control) through compression strength tests of the composites. Direct tension tests were also carried out on each steel strip in order to understand their respective stress–strain behaviour. The study demonstrates that perforating the re-entrant honeycomb walls could be a simple method for achieving multi-planar auxetic behaviour in re-entrant steel honeycomb-reinforced cementitious composites.
Citation
Momoh, E.O. et al. (2025). Compressive Characteristics of Perforated Re-entrant Auxetic Steel Honeycomb–Mortar Composite. In: Kioumarsi, M., Shafei, B. (eds) The 1st International Conference on Net-Zero Built Environment. NTZR 2024. Lecture Notes in Civil Engineering, vol 237. Springer, Cham. https://doi.org/10.1007/978-3-031-69626-8_21
Publisher
Journal
Research Unit
PubMed ID
PubMed Central ID
Embedded videos
Additional Links
Type
Conference contribution
Language
en
Description
© 2025 The Authors. Published by Springer. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link: https://doi.org/10.1007/978-3-031-69626-8_21
Series/Report no.
Lecture Notes in Civil Engineering, 237
ISSN
2366-2557
EISSN
ISBN
ISMN
Gov't Doc #
Sponsors
This work was supported by the United Kingdom’s Engineering and Physical Sciences Research Council (EPSRC, UK), [EP/W019027/1].