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Plate end debonding : a modified approach to predict stress in FRP–concrete bond

Obaidat, Yasmeen; Heyden, Susanne LU and Dahlblom, Ola LU (2012) CICE2012 In Proceedings: IIFC Official Conferences: FRP Composites in Construction (CICE) Series
Abstract
An important failure mode of RC beams retrofitted with FRP plates is plate end debonding. Design codes provide equations for estimating shear stress at the plate end, but none of these equations include the FRP to concrete width ratio. This paper suggests an improved equation for calculating shear stress that includes the width ratio. The new equation was obtained by fitting 3D nonlinear FEM results to a proposed relation and provided a clearly improved prediction of the shear stress. The simulations also showed that a large width ratio and an adhesive of low stiffness decrease the risk of debonding.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Fibre Reinforced Plastic (FRP), Retrofitting, Debonding, Shear stress.
in
Proceedings: IIFC Official Conferences: FRP Composites in Construction (CICE) Series
pages
8 pages
publisher
IIFC
conference name
CICE2012
external identifiers
  • Scopus:84924390160
language
English
LU publication?
yes
id
8223f40c-8f08-49cc-8d3b-bc6b72dfb76d (old id 3168734)
date added to LUP
2012-12-04 17:16:26
date last changed
2016-10-13 04:36:54
@misc{8223f40c-8f08-49cc-8d3b-bc6b72dfb76d,
  abstract     = {An important failure mode of RC beams retrofitted with FRP plates is plate end debonding. Design codes provide equations for estimating shear stress at the plate end, but none of these equations include the FRP to concrete width ratio. This paper suggests an improved equation for calculating shear stress that includes the width ratio. The new equation was obtained by fitting 3D nonlinear FEM results to a proposed relation and provided a clearly improved prediction of the shear stress. The simulations also showed that a large width ratio and an adhesive of low stiffness decrease the risk of debonding.},
  author       = {Obaidat, Yasmeen and Heyden, Susanne and Dahlblom, Ola},
  keyword      = {Fibre Reinforced Plastic (FRP),Retrofitting,Debonding,Shear stress.},
  language     = {eng},
  pages        = {8},
  publisher    = {ARRAY(0x88fcb80)},
  series       = {Proceedings: IIFC Official Conferences: FRP Composites in Construction (CICE) Series},
  title        = {Plate end debonding : a modified approach to predict stress in FRP–concrete bond},
  year         = {2012},
}