The confining effectiveness of NiTiNb and NiTi SMA wire jackets for concrete
- Authors
- Choi, Eunsoo; Chung, Young-Soo; Choi, Jun-Hyeok; Kim, Hong-Taek; Lee, Hacksoo
- Issue Date
- Mar-2010
- Publisher
- IOP PUBLISHING LTD
- Citation
- SMART MATERIALS AND STRUCTURES, v.19, no.3
- Journal Title
- SMART MATERIALS AND STRUCTURES
- Volume
- 19
- Number
- 3
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/20832
- DOI
- 10.1088/0964-1726/19/3/035024
- ISSN
- 0964-1726
- Abstract
- The purpose of this study is to assess the confining effectiveness of shape memory alloy (SMA) wire jackets for concrete. The performance of SMA wire jackets was compared to that of steel jackets. A prestrained martensitic SMA wire was wrapped around a concrete cylinder and then heated by a heating jacket. In the process, a confining stress around the cylinder was developed in the SMA wire due to the shape memory effect; this jacketing method can increase the strength and ductility of the cylinder under an axial compressive load. In this study, NiTi and NiTiNb SMA wires of 1.0 mm in diameter were used for the confinement. Recovery tests were conducted on the wires to assess their recovery and residual stress. The confinement by SMA wire jackets increased the strength slightly and greatly increased the ductility compared to the strength and ductility of plain concrete cylinders. The NiTiNb SMA wire jacket showed better performance than that of the NiTi SMA wire jacket. The confining effectiveness of the SMA wire jackets of this study was estimated to be similar to that of the steel jackets. This study showed the potential of the SMA wire jacketing method to retrofit reinforced concrete columns and protect them from seismic risks.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Civil Engineering Major > 1. Journal Articles
- College of Engineering > Civil and Environmental Engineering > Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/20832)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.