Bond behavior of GFRP and steel bars in ultra-high-performance fiber-reinforced concrete
- Authors
- Yoo, Doo-Yeol; Yoon, Young-Soo
- Issue Date
- 2017
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- ultra-high-performance fiber-reinforced concrete; glass fiber-reinforced polymer bar; steel bar; bond performance; wedging effect; development length
- Citation
- ADVANCED COMPOSITE MATERIALS, v.26, no.6, pp.493 - 510
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED COMPOSITE MATERIALS
- Volume
- 26
- Number
- 6
- Start Page
- 493
- End Page
- 510
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/86327
- DOI
- 10.1080/09243046.2016.1197493
- ISSN
- 0924-3046
- Abstract
- The bond behavior of glass fiber-reinforced polymer (GFRP) and steel bars embedded in ultra-high-performance fiber-reinforced concrete (UHPFRC) was investigated according to embedment length and bar diameter. Post-peak bond stress-slip softening curve of the GFRP bars was obtained, and a wedging effect was quantitatively evaluated. Test results indicated that a normalized bond strength of 5 was applicable for steel bars embedded in UHPFRC, and the development lengths of normal-and high-strength steel bars were determined to be 2 and 2.5 times the bar diameter, respectively. The GFRP bars exhibited approximately 70% lower bond strength than the steel bars, and the bond stress additionally applied by the wedging effect increased almost linearly with respect to the slip. Based on dimensionless bond stress and slip parameters, an appropriate theoretical model for the bond stress and slip relationship of steel bars in UHPFRC was suggested, and it was verified through comparison with the test data.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.