Conference Proceedings

Confinement of NORMAL- AND HIGH-STRENGTH CONCRETE by Shape Memory Alloy (SMA) Spirals

A Gholampour, T Ozbakkaloglu, K Wang (ed.)

IOP Conference Series: Materials Science and Engineering | IOP PUBLISHING LTD | Published : 2018

Abstract

This paper presents the results of an experimental study on the axial compressive behaviour of normal- and high-strength concrete (NSC and HSC) confined by shape memory alloy (SMA) spirals. A spiral pitch space of 36 and 20 mm was used for SMA confinement of NSC and HSC columns, respectively. The confining pressure was applied on the concrete cylinders by SMA spirals that were prestrained at 0, 5.5, and 9.5%. The compression test results on the SMA-confined specimens indicate that the prestrain level of SMA significantly affects the axial compressive behaviour of both NSC and HSC. An increase in the level of prestrain leads to an increase in the peak axial stress and corresponding strain of ..

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Grants

Awarded by National Natural Science Foundation of China


Funding Acknowledgements

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China through Grant No. 51650110495 and the University of Adelaide through a Research Excellence Grant awarded to the second author. The authors also thank Messrs. Giannini, Koch, Lim, and Shaw for completing the tests reported in this paper as part of their Honour's thesis.