Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams
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–...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2017/3832468 |
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| author | Xinyan Guo Dong Liu Peiyan Huang Xiaohong Zheng |
| author_facet | Xinyan Guo Dong Liu Peiyan Huang Xiaohong Zheng |
| author_sort | Xinyan Guo |
| collection | DOAJ |
| description | 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%. |
| format | Article |
| id | doaj-art-0ead0f7854f7422bb5aceefd7c91eb6b |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-0ead0f7854f7422bb5aceefd7c91eb6b2025-02-03T05:44:14ZengWileyInternational Journal of Polymer Science1687-94221687-94302017-01-01201710.1155/2017/38324683832468Prestress Loss of CFL in a Prestressing Process for Strengthening RC BeamsXinyan Guo0Dong Liu1Peiyan Huang2Xiaohong Zheng3School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, ChinaA 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%.http://dx.doi.org/10.1155/2017/3832468 |
| spellingShingle | Xinyan Guo Dong Liu Peiyan Huang Xiaohong Zheng Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams International Journal of Polymer Science |
| title | Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams |
| title_full | Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams |
| title_fullStr | Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams |
| title_full_unstemmed | Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams |
| title_short | Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams |
| title_sort | prestress loss of cfl in a prestressing process for strengthening rc beams |
| url | http://dx.doi.org/10.1155/2017/3832468 |
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