Shear strength of reinforced concrete beams strengthened in shear using externally-bonded FRP composites

Deuck Hang Lee; Sun Jin Han; Kang Su Kim; James M. LaFave

doi:10.1016/j.compstruct.2017.04.025

Shear strength of reinforced concrete beams strengthened in shear using externally-bonded FRP composites

Deuck Hang Lee, Sun Jin Han, Kang Su Kim, James M. LaFave

Department of Architectural Engineering

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

A shear strength estimation model for reinforced concrete (RC) beams, the so-called dual potential capacity model (DPCM), has previously been proposed by the authors. In this study, the DPCM is extended to estimate the shear strength of RC beams strengthened in shear by using externally-bonded fiber-reinforced polymer (FRP) composites. The proposed model has been derived so as to take into account the effects of the type of FRP composite, fiber-bonding configuration, and fiber layout, and it can also determine the critical shear failure modes of RC beams strengthened by externally-bonded FRP composites. To verify the accuracy of the proposed model, shear test results of 227 RC beams strengthened by externally-bonded FRP composites were collected from previous studies, and it is shown that the analysis results estimated by the DPCM agree well with those test results.

Original language	English
Pages (from-to)	177-187
Number of pages	11
Journal	Composite Structures
Volume	173
DOIs	https://doi.org/10.1016/j.compstruct.2017.04.025
State	Published - 1 Aug 2017

Keywords

Aggregate interlock
Composites
Compression zone
Dual potential capacity
Fiber-reinforced polymer (FRP)
Shear

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10.1016/j.compstruct.2017.04.025

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title = "Shear strength of reinforced concrete beams strengthened in shear using externally-bonded FRP composites",

abstract = "A shear strength estimation model for reinforced concrete (RC) beams, the so-called dual potential capacity model (DPCM), has previously been proposed by the authors. In this study, the DPCM is extended to estimate the shear strength of RC beams strengthened in shear by using externally-bonded fiber-reinforced polymer (FRP) composites. The proposed model has been derived so as to take into account the effects of the type of FRP composite, fiber-bonding configuration, and fiber layout, and it can also determine the critical shear failure modes of RC beams strengthened by externally-bonded FRP composites. To verify the accuracy of the proposed model, shear test results of 227 RC beams strengthened by externally-bonded FRP composites were collected from previous studies, and it is shown that the analysis results estimated by the DPCM agree well with those test results.",

keywords = "Aggregate interlock, Composites, Compression zone, Dual potential capacity, Fiber-reinforced polymer (FRP), Shear",

author = "Lee, {Deuck Hang} and Han, {Sun Jin} and Kim, {Kang Su} and LaFave, {James M.}",

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AU - Lee, Deuck Hang

AU - Han, Sun Jin

AU - Kim, Kang Su

AU - LaFave, James M.

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AB - A shear strength estimation model for reinforced concrete (RC) beams, the so-called dual potential capacity model (DPCM), has previously been proposed by the authors. In this study, the DPCM is extended to estimate the shear strength of RC beams strengthened in shear by using externally-bonded fiber-reinforced polymer (FRP) composites. The proposed model has been derived so as to take into account the effects of the type of FRP composite, fiber-bonding configuration, and fiber layout, and it can also determine the critical shear failure modes of RC beams strengthened by externally-bonded FRP composites. To verify the accuracy of the proposed model, shear test results of 227 RC beams strengthened by externally-bonded FRP composites were collected from previous studies, and it is shown that the analysis results estimated by the DPCM agree well with those test results.

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KW - Composites

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Shear strength of reinforced concrete beams strengthened in shear using externally-bonded FRP composites

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Keywords

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