This study explores the effect of length to diameter (L/D) ratio on the axial load capacity of small-diameter self-compacting concrete-filled steel tube (SCFT) specimens. The SCFT specimens with L/D ratio of 2 to 14 were tested. Two different cold-formed steel tubes with diameters of 26·9 and 33·7 mm were used in the construction of the SCFT specimens. The behaviour of the SCFT specimens was compared with the unfilled steel tube (UT) specimens. The axial load capacity of SCFT specimens was found to be higher than the axial load capacity of UT specimens. The compressive failure of SCFT and UT specimens with a ratio of 2 and 4 occurred due to local buckling, and with L/D ratio ≥ 6 failure occurred due to global buckling. However, the self-compacting concrete inside the steel tubes improved the ductility and the post-peak axial load–axial deformation response of SCFT specimens compared to the UT specimens.
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August 2018
Research Article|
November 22 2017
Behaviour of small-diameter self-compacting concrete-filled steel tubes Available to Purchase
Faez Alhussainy;
Faez Alhussainy
PhD Candidate, School of Civil, Mining and Environmental Engineering, University of Wollongong, NSW, Australia
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M. Neaz Sheikh;
M. Neaz Sheikh
Associate Professor, School of Civil, Mining and Environmental Engineering, University of Wollongong, NSW, Australia
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Muhammad N. S. Hadi
Muhammad N. S. Hadi
Associate Professor, School of Civil, Mining and Environmental Engineering, University of Wollongong, NSW, Australia (corresponding author: mhadi@uow.edu.au)
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Publisher: Emerald Publishing
Received:
December 06 2016
Revision Received:
August 17 2017
Accepted:
September 12 2017
Online ISSN: 1751-763X
Print ISSN: 0024-9831
ICE Publishing: All rights reserved
2017
Magazine of Concrete Research (2018) 70 (16): 811–821.
Article history
Received:
December 06 2016
Revision Received:
August 17 2017
Accepted:
September 12 2017
Citation
Alhussainy F, Neaz Sheikh M, Hadi MNS (2018), "Behaviour of small-diameter self-compacting concrete-filled steel tubes". Magazine of Concrete Research, Vol. 70 No. 16 pp. 811–821, doi: https://doi.org/10.1680/jmacr.16.00531
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