Efficiency assessment of CFRP laminate reinforcement of a partly deficient post-tensioned fly-over
- Author
- Bart De Pauw (UGent) , Philippe Van Bogaert (UGent) , Hans De Backer (UGent) and Amelie Outtier (UGent)
- Organization
- Abstract
- Immediately after construction, five spans of a newly built concrete fly-over showed insufficient concrete resistance. Carbon fibre reinforced polymer (CFRP) laminates with little compression stiffness were glued to the lower surface of the superstructure to strengthen the concrete slab decks. After installing, assessment of this reinforcement was made by a first loading test, during which concrete strain measurements with wireless gauges were carried out. In addition, the fundamental frequencies have been determined by accelerometers and impact excitation of the viaduct. Comparing the results from these tests on acceptable and deficient decks confirms the insufficient concrete quality of the suspect spans. The time-dependent evolution of creep changes this situation and the CFRP laminates actively influence the characteristics of the five strengthened decks. Hence, strains were monitored constantly during a period of 5 months. Finally, loading tests with trains as well as acceleration measurements were carried out to confirm the effect of the reinforcement.
- Keywords
- acceleration measurements, fly-over, creep, CFRP laminates, wireless strain gauge measurements
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-1248152
- MLA
- De Pauw, Bart, et al. “Efficiency Assessment of CFRP Laminate Reinforcement of a Partly Deficient Post-Tensioned Fly-Over.” STRUCTURE AND INFRASTRUCTURE ENGINEERING, vol. 6, no. 4, 2010, pp. 423–34, doi:10.1080/15732470701835744.
- APA
- De Pauw, B., Van Bogaert, P., De Backer, H., & Outtier, A. (2010). Efficiency assessment of CFRP laminate reinforcement of a partly deficient post-tensioned fly-over. STRUCTURE AND INFRASTRUCTURE ENGINEERING, 6(4), 423–434. https://doi.org/10.1080/15732470701835744
- Chicago author-date
- De Pauw, Bart, Philippe Van Bogaert, Hans De Backer, and Amelie Outtier. 2010. “Efficiency Assessment of CFRP Laminate Reinforcement of a Partly Deficient Post-Tensioned Fly-Over.” STRUCTURE AND INFRASTRUCTURE ENGINEERING 6 (4): 423–34. https://doi.org/10.1080/15732470701835744.
- Chicago author-date (all authors)
- De Pauw, Bart, Philippe Van Bogaert, Hans De Backer, and Amelie Outtier. 2010. “Efficiency Assessment of CFRP Laminate Reinforcement of a Partly Deficient Post-Tensioned Fly-Over.” STRUCTURE AND INFRASTRUCTURE ENGINEERING 6 (4): 423–434. doi:10.1080/15732470701835744.
- Vancouver
- 1.De Pauw B, Van Bogaert P, De Backer H, Outtier A. Efficiency assessment of CFRP laminate reinforcement of a partly deficient post-tensioned fly-over. STRUCTURE AND INFRASTRUCTURE ENGINEERING. 2010;6(4):423–34.
- IEEE
- [1]B. De Pauw, P. Van Bogaert, H. De Backer, and A. Outtier, “Efficiency assessment of CFRP laminate reinforcement of a partly deficient post-tensioned fly-over,” STRUCTURE AND INFRASTRUCTURE ENGINEERING, vol. 6, no. 4, pp. 423–434, 2010.
@article{1248152,
abstract = {{Immediately after construction, five spans of a newly built concrete fly-over showed insufficient concrete resistance. Carbon fibre reinforced polymer (CFRP) laminates with little compression stiffness were glued to the lower surface of the superstructure to strengthen the concrete slab decks. After installing, assessment of this reinforcement was made by a first loading test, during which concrete strain measurements with wireless gauges were carried out. In addition, the fundamental frequencies have been determined by accelerometers and impact excitation of the viaduct. Comparing the results from these tests on acceptable and deficient decks confirms the insufficient concrete quality of the suspect spans. The time-dependent evolution of creep changes this situation and the CFRP laminates actively influence the characteristics of the five strengthened decks. Hence, strains were monitored constantly during a period of 5 months. Finally, loading tests with trains as well as acceleration measurements were carried out to confirm the effect of the reinforcement.}},
author = {{De Pauw, Bart and Van Bogaert, Philippe and De Backer, Hans and Outtier, Amelie}},
issn = {{1573-2479}},
journal = {{STRUCTURE AND INFRASTRUCTURE ENGINEERING}},
keywords = {{acceleration measurements,fly-over,creep,CFRP laminates,wireless strain gauge measurements}},
language = {{eng}},
number = {{4}},
pages = {{423--434}},
title = {{Efficiency assessment of CFRP laminate reinforcement of a partly deficient post-tensioned fly-over}},
url = {{http://doi.org/10.1080/15732470701835744}},
volume = {{6}},
year = {{2010}},
}
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