Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 2005.05a
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- Pages.279-282
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- 2005
Strengthening performance of RC beams strengthened by bonded or unbonded prestressed CFRP laminates
부착 또는 비부착된 탄소판으로 긴장 보강한 RC보의 보강성능
Abstract
This study investigates the flexural behavior and strengthening performance of RC beams strengthened by prestressed CFRP laminates through static bending tests. Tests on RC beams strengthened with prestressed CFRP laminates were carried out for both cases where the CFRP laminates were bonded or not and the corresponding effects on the strengthening performances of RC beams were examined. Experimental results revealed that RC beams strengthened with prestressed CFRP laminates presented increased crack load and yield load according to the level of prestress. Premature debonding occurred before the RC beam strengthened with bonded prestressed CFRP laminates reaches the maximum load, and the specimen presented similar behavior to the one exhibited by the specimen with unbonded laminates.
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