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Evaluation of Parameters of Bond Action between FRP and Concrete

Obaidat, Yasmeen Taleb; Heyden, Susanne LU and Dahlblom, Ola LU (2013) In Journal of Composites for Construction 17(5). p.626-635
Abstract
This paper presents the evaluation of parameters describing bond action between fiber-reinforced polymer (FRP) and concrete in RC structures strengthened in flexure. The parameters were evaluated on the basis of fitting nonlinear finite-element results to experimental results from literature. Three-dimensional (3D) finite-element simulations were used to account for transversal effects without introducing any geometry-related correction coefficients in the material model. The parameters defining the material model, describing bond action, were initial stiffness, shear strength, and fracture energy of the FRP-concrete interface. Bilinear, trilinear, and exponential curve shapes were evaluated. The parameters were related to concrete tensile... (More)
This paper presents the evaluation of parameters describing bond action between fiber-reinforced polymer (FRP) and concrete in RC structures strengthened in flexure. The parameters were evaluated on the basis of fitting nonlinear finite-element results to experimental results from literature. Three-dimensional (3D) finite-element simulations were used to account for transversal effects without introducing any geometry-related correction coefficients in the material model. The parameters defining the material model, describing bond action, were initial stiffness, shear strength, and fracture energy of the FRP-concrete interface. Bilinear, trilinear, and exponential curve shapes were evaluated. The parameters were related to concrete tensile strength and shear stiffness of the adhesive. According to the analysis, the models provide a good estimation of ultimate load and strain distribution in FRP compared with test results. The results showed that whether the bond-slip curve was assumed to be bilinear, trilinear, or exponential has a minor effect. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cohesive Model, Debonding, Interfacial, Strengthening, Fiber-reinforced polymer (FRP), Parameters, Cracking, Bonding, Concrete, Fiber reinforced polymer, Stiffness, Fracture energy
in
Journal of Composites for Construction
volume
17
issue
5
pages
626 - 635
publisher
American Society of Civil Engineers (ASCE)
external identifiers
  • wos:000324464100006
  • scopus:84884619815
ISSN
1090-0268
DOI
10.1061/(ASCE)CC.1943-5614.0000378
language
English
LU publication?
yes
id
30f47c08-cf06-4c83-bfe9-9fab75d5ca01 (old id 4172044)
date added to LUP
2013-11-25 09:54:20
date last changed
2019-02-20 06:05:19
@article{30f47c08-cf06-4c83-bfe9-9fab75d5ca01,
  abstract     = {This paper presents the evaluation of parameters describing bond action between fiber-reinforced polymer (FRP) and concrete in RC structures strengthened in flexure. The parameters were evaluated on the basis of fitting nonlinear finite-element results to experimental results from literature. Three-dimensional (3D) finite-element simulations were used to account for transversal effects without introducing any geometry-related correction coefficients in the material model. The parameters defining the material model, describing bond action, were initial stiffness, shear strength, and fracture energy of the FRP-concrete interface. Bilinear, trilinear, and exponential curve shapes were evaluated. The parameters were related to concrete tensile strength and shear stiffness of the adhesive. According to the analysis, the models provide a good estimation of ultimate load and strain distribution in FRP compared with test results. The results showed that whether the bond-slip curve was assumed to be bilinear, trilinear, or exponential has a minor effect.},
  author       = {Obaidat, Yasmeen Taleb and Heyden, Susanne and Dahlblom, Ola},
  issn         = {1090-0268},
  keyword      = {Cohesive Model,Debonding,Interfacial,Strengthening,Fiber-reinforced polymer (FRP),Parameters,Cracking,Bonding,Concrete,Fiber reinforced polymer,Stiffness,Fracture energy},
  language     = {eng},
  number       = {5},
  pages        = {626--635},
  publisher    = {American Society of Civil Engineers (ASCE)},
  series       = {Journal of Composites for Construction},
  title        = {Evaluation of Parameters of Bond Action between FRP and Concrete},
  url          = {http://dx.doi.org/10.1061/(ASCE)CC.1943-5614.0000378},
  volume       = {17},
  year         = {2013},
}