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Crack-curing of concrete beams using cold-drawn SMA reinforcing fibers
- Authors
- Choi, E.; Chung, Y.-S.; Kim, D.J.; Jung, C.
- Issue Date
- 2014
- Publisher
- Web Portal ASME (American Society of Mechanical Engineers)
- Keywords
- Cold drawing; Concrete; Crackcuring; Shape memory alloy; Shape memory effect
- Citation
- ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2014, v.1
- Journal Title
- ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2014
- Volume
- 1
- ISSN
- 0000-0000
- Abstract
- This study used NiTi shape memory alloy (SMA) wires of 1.0 mm diameter to manufacture reinforcing fibers for cement composite. The wires were elongated by a cold drawing method which also reduced the diameter to 0.965 mm. This study prepared two types of SMA fibers such as straight and dog-bone- shaped. For bending tests, three concrete beams with a dimension of 40 mm x 400 mm x 200 mm (BxHxL) were prepared for each type of specimen. Three points bending tests were conducted. After cracking, the beams were heated at the bottom by fire frame, then, the recovery stress in the SMA fibers developed. This stress closed the cracks, and the widths of cracks were measured. The SMA fibers, in particular donbone shaped, were effective to close cracks and will be used for crack-curing of concrete beams. Copyright © 2014 by ASME.
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Related Researcher
- Choi, Eun soo
- Engineering (Civil and Environmental Engineering)