Evaluation of time and temperature dependent deformation of FRP bonded to concrete

Yoseok Jeong, Anurag Jaipuriar, Maria M. Lopez, Charles E. Bakis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Most of the recent research on the bond characteristics of the concrete-FRP interface involves short-term behavior which may not be indicative of bond behavior following sustained forces on the adhesive joint, particularly in the case of ambient-curing adhesives which can take weeks to reach their full strength capability. The objective of the research effort is to investigate the effects of sustained loads and various temperatures on the bond behavior of FRP sheets bonded to concrete. The approach involves experiments and numerical analysis. The model was parameterized with experiments on the concrete, FRP, interface, and epoxy. Good correlation was seen between the numerical simulations and pull-off experiments. Parametric studies shed light on the influence of temperature, epoxy modulus, and epoxy thickness on the redistribution of interfacial shear stress during sustained loading. This investigation confirms the hypothesis that interfacial stress redistribution can occur due to sustained load and elevated temperature and its effect can be significant.

Original languageEnglish
Title of host publication10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10
Pages1149-1165
Number of pages17
Edition275 SP
StatePublished - 2011
Event10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10, in conjunction with the ACI Spring 2011 Convention - Tampa, FL, United States
Duration: 2 Apr 20114 Apr 2011

Publication series

NameAmerican Concrete Institute, ACI Special Publication
Number275 SP
Volume2
ISSN (Print)0193-2527

Conference

Conference10th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures 2011, FRPRCS-10, in conjunction with the ACI Spring 2011 Convention
Country/TerritoryUnited States
CityTampa, FL
Period2/04/114/04/11

Keywords

  • Creep
  • Debonding
  • Externally bonded
  • FRP
  • Stress distribution

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