Flexural Performance of RC Beams Strengthened with Different Reinforcement Ratios of CFRP Laminates

Habibur Rahman Sobuz; Ehsan Ahmed

doi:10.4028/www.scientific.net/KEM.471-472.79

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 471-472Flexural Performance of RC Beams Strengthened with...

Flexural Performance of RC Beams Strengthened with Different Reinforcement Ratios of CFRP Laminates

Abstract:

In this paper, experimental study is carried out to evaluate the flexural performance of reinforced concrete beams strengthened with different ratios of carbon fibre reinforced polymer (CFRP) laminates. Four rectangular reinforced concrete beams strengthened with different reinforcement ratios of CFRP laminates are tested to failure under transverse bending on a simply supported span of 1.9 m. The increase of ultimate strength provided by the bonded carbon fiber is assessed and failure mode is identified. The results indicated that the flexural capacity of beam was significantly improved as the layers of laminates increased. It is concluded that the attachment of CFRP laminates has substantial influence on the performance of CFRP strengthened beams. However, de-bonding of CFRP laminates from the concrete surface is still a concern for the case of multi-layer strengthening of beam. Based on the observed results, recommendations are made to prevent the premature de-bonding failure of strengthened beams.

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Periodical:

Key Engineering Materials (Volumes 471-472)

Pages:

79-84

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.471-472.79

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Online since:

February 2011

Authors:

Habibur Rahman Sobuz, Ehsan Ahmed

Keywords:

CFRP Laminate, Cracking Load, De-Bonding, Flexural Strength, Strengthened Beam

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