Design Proposal for Concrete Cover Separation in Beams Strengthened by Externally Bonded Tension Reinforcement

Sai Sai Wang

doi:10.4028/www.scientific.net/AMR.1101.385

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1101Design Proposal for Concrete Cover Separation in...

Design Proposal for Concrete Cover Separation in Beams Strengthened by Externally Bonded Tension Reinforcement

Abstract:

Existing experimental observations have shown that the application of externally bonded reinforcement (steel plate, FRP laminate, overlay, etc.) to strengthen RC structures can lead to brittle failures involving debonding of the external reinforcement before the design load is reached with classical failure modes. The design approach to determine the strengthening material and its area should avoid these premature failures. In this study, an analytical model developed for the overlay strengthening by the authors is firstly proved to be applicable for the steel plate or FRP laminate strengthening by comparing the analytical and experimental failure load as well as the failure mode of the strengthened beams reported in the literature. Then the main parameters involved in the process of concrete cover separation are identified and a simple criterion is proposed for prediction of premature failure.

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Periodical:

Advanced Materials Research (Volume 1101)

Pages:

385-389

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1101.385

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Online since:

April 2015

Authors:

Sai Sai Wang*

Keywords:

Concrete Cover Separation, Design Proposal, FRP Laminate, Overlay, Steel Plate, Strengthening

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