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Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams
Joint Authors
Huang, P. Y.
Zheng, X. H.
Guo, X. Y.
Liu, Dong
Source
International Journal of Polymer Science
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-05-09
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A prestressing system was designed to strengthen reinforced concrete (RC) beams with prestressed carbon fiber laminate (CFL).
During different prestressing processes, prestress loss was measured using strain gauges attached on the surface of CFL along the length direction.
The prestress loss was 50–68% of the whole prestress loss, which is typically associated with CFL slipping between the grip anchors.
Approximately 20–27% of the prestress loss was caused by the elastic shortening of the RC beam.
An analytical model using linear-elastic theory was constructed to calculate the prestress loss caused by CFL slipping between the anchors and the elastic shortening of the strengthened beams.
The compared results showed that the analytical model of prestress loss can describe the experimental data well.
Methods of reducing the prestress loss were also suggested.
Compared to other experiments, the prestressing system proposed by this research group was effective because the maximum percentage of prestress loss was 14.9% and the average prestress loss was 12.5%.
American Psychological Association (APA)
Guo, X. Y.& Liu, Dong& Huang, P. Y.& Zheng, X. H.. 2017. Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams. International Journal of Polymer Science،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1168946
Modern Language Association (MLA)
Guo, X. Y.…[et al.]. Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams. International Journal of Polymer Science No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1168946
American Medical Association (AMA)
Guo, X. Y.& Liu, Dong& Huang, P. Y.& Zheng, X. H.. Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams. International Journal of Polymer Science. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1168946
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168946