Debonding Behaviors of CFRP Strengthened RC Beams with Weak Interfaces

Sen Li; Xiao Gang Wang; Xin Gang Zhou

doi:10.4028/www.scientific.net/AMM.351-352.587

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 351-352Debonding Behaviors of CFRP Strengthened RC Beams...

Debonding Behaviors of CFRP Strengthened RC Beams with Weak Interfaces

Abstract:

Debonding behaviors of CFRP strengthened RC beams were experimentally investigated under the influence of weak interfaces, which are induced either by defective bonding of replaced cover or expansive cracks. Shown by test results, weak interfaces impaired considerably the structural integrity of strengthening systems during loading, and easily led to CFRP debonding failure. U-strips worked effectively in preventing the integral debonding and guarantee the structural performance of flexural sheets. However, local cover delamination in the loading process and premature rupture of flexural CFRP could still take place due to the weak interface effects. Therefore, allowable tensile strain of flexural CFRP should be reduced, and more strict confinement and anchorage measures should be taken in this case.

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Periodical:

Applied Mechanics and Materials (Volumes 351-352)

Pages:

587-591

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.351-352.587

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Online since:

August 2013

Authors:

Sen Li, Xiao Gang Wang, Xin Gang Zhou

Keywords:

Carbon Fiber Reinforced Polymer/Plastic (CFRP), Cover Delamination, Reinforced Concrete (RC) Beam, Weak Interface

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References

[1] ACI Committee 546. Concrete repair guide[S]. American Concrete Institute. (ACI546R-04).

Google Scholar

[2] G W Ni, H X Wang, W H Ma, T Q Liu. Engineering application of CFRP strengthened corroded concrete structures [J]. China Concrete and Cement Products, 2005, 2(4); 41-42. (In Chinese).

Google Scholar

[3] W P Zhang, X G Wang, X L Gu. Flexural behavior of corroded reinforced concrete beams strengthened with carbon fiber composite sheets [J]. China Civil Engineering Journal, 2010, 43(6); 34-41. (In Chinese).

Google Scholar

[4] J G Teng, J F Chen, S T Smith, L Lin. FRP strengthened RC structures [M]. Beijing: China Architecture & Building Press, 2005. (In Chinese).

Google Scholar

[5] L P Ye, T Q Fang, Y X Yang. Experimental Study on debonding resistance behavior of CFRP reinforced RC beams [J]. Architectural Structure, 2003, 33(2); 61-65. (In Chinese).

Google Scholar

[6] National standard of People's Republic of China. Standard for test method of mechanical properties on ordinary concrete, GB/T 50081-2002 [S]. Beijing: China Architecture & Building Press, 2003. (In Chinese).

Google Scholar