STRENGTHENING AND STRAIN SENSING TECHNIQUES IN RECTANGULAR CONCRETE BEAM USING FIBREGLASS COMPOSITES AND FIBRE BRAGG GRATING SENSORS
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| Format: | Recurso digital |
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Zenodo
1999
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| _version_ | 1866901640277131264 |
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| author | K. T. Lau L. M. Zhou L. Ye M. Diao |
| author_facet | K. T. Lau L. M. Zhou L. Ye M. Diao |
| contents | In this paper, a state-of-art report of an experimental investigation on the responses of the laboratory size rectangular concrete beams with the notch formation on the tension side strengthened by using fibre woven composites is presented. Fibre-optic Bragg grating (FBG) sensors have been embedded at the interface between the externally bonded reinforcement and concrete surface to monitor the internal strain behaviour of the beam, which was subjected to three-point bending load after strengthening. The electrical strain gauges were used to measure the surface strain and compare the results from the internal sensors. The results show that the overall flexural strengths of the strengthened specimens are increased compared with its un-strengthened status. Concrete and bonding failures were observed when the thick reinforcement was used. In addition, the results obtained from the sensor reveal that the stress at the notch tip of concrete was higher than that measured on the surface of the reinforcement. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_15418744 |
| institution | Zenodo |
| language | |
| publishDate | 1999 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | STRENGTHENING AND STRAIN SENSING TECHNIQUES IN RECTANGULAR CONCRETE BEAM USING FIBREGLASS COMPOSITES AND FIBRE BRAGG GRATING SENSORS K. T. Lau L. M. Zhou L. Ye M. Diao In this paper, a state-of-art report of an experimental investigation on the responses of the laboratory size rectangular concrete beams with the notch formation on the tension side strengthened by using fibre woven composites is presented. Fibre-optic Bragg grating (FBG) sensors have been embedded at the interface between the externally bonded reinforcement and concrete surface to monitor the internal strain behaviour of the beam, which was subjected to three-point bending load after strengthening. The electrical strain gauges were used to measure the surface strain and compare the results from the internal sensors. The results show that the overall flexural strengths of the strengthened specimens are increased compared with its un-strengthened status. Concrete and bonding failures were observed when the thick reinforcement was used. In addition, the results obtained from the sensor reveal that the stress at the notch tip of concrete was higher than that measured on the surface of the reinforcement. |
| title | STRENGTHENING AND STRAIN SENSING TECHNIQUES IN RECTANGULAR CONCRETE BEAM USING FIBREGLASS COMPOSITES AND FIBRE BRAGG GRATING SENSORS |
| url | https://doi.org/10.5281/zenodo.15418744 |