Slip modulus of FRP sheets bonded to concrete

Y. J. Lee, T. E. Boothby, C. E. Bakis, Antonio Nanni

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

An analytical tension-stiffening model was developed for fiber-reinforced polymer (FRP) sheets bonded to reinforced concrete based on equilibrium equations and the assumption of linear behavior between bond stress and slip. Experimental measurements were made on small- and large-scale specimens. For the small-scale specimens, the primer coat thickness (adhesive thickness between concrete and FRP sheet) was varied for each specimen. By comparisons of the experimental data to the analytical results, the slip modulus at the concrete/FRP sheet and concrete/steel interface was established at the service load level. From this study, it was found that primer coat thickness has a modest influence on the slip modulus of the repaired member, and stiffening of this interface slightly enhances the stiffness of the specimen. After the formation of secondary and diagonal tension cracks, the stiffness of the specimen dropped rapidly and the linearly elastic slip modulus assumption could not be applied. The slip modulus at the concrete/steel rebar interface is less than at the concrete/FRP sheet interface and the slip modulus is independent of the type of FRP sheet.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalJournal of Composites for Construction
Volume3
Issue number4
DOIs
StatePublished - Nov 1 1999
Externally publishedYes

Fingerprint

Polymers
Concretes
Fibers
Steel
Stiffness
Reinforced concrete
Adhesives
Cracks

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Computational Mechanics
  • Mechanics of Materials
  • Ceramics and Composites

Cite this

Slip modulus of FRP sheets bonded to concrete. / Lee, Y. J.; Boothby, T. E.; Bakis, C. E.; Nanni, Antonio.

In: Journal of Composites for Construction, Vol. 3, No. 4, 01.11.1999, p. 161-167.

Research output: Contribution to journalArticle

Lee, Y. J. ; Boothby, T. E. ; Bakis, C. E. ; Nanni, Antonio. / Slip modulus of FRP sheets bonded to concrete. In: Journal of Composites for Construction. 1999 ; Vol. 3, No. 4. pp. 161-167.
@article{f8973ed75e6d4c92978857dcda574765,
title = "Slip modulus of FRP sheets bonded to concrete",
abstract = "An analytical tension-stiffening model was developed for fiber-reinforced polymer (FRP) sheets bonded to reinforced concrete based on equilibrium equations and the assumption of linear behavior between bond stress and slip. Experimental measurements were made on small- and large-scale specimens. For the small-scale specimens, the primer coat thickness (adhesive thickness between concrete and FRP sheet) was varied for each specimen. By comparisons of the experimental data to the analytical results, the slip modulus at the concrete/FRP sheet and concrete/steel interface was established at the service load level. From this study, it was found that primer coat thickness has a modest influence on the slip modulus of the repaired member, and stiffening of this interface slightly enhances the stiffness of the specimen. After the formation of secondary and diagonal tension cracks, the stiffness of the specimen dropped rapidly and the linearly elastic slip modulus assumption could not be applied. The slip modulus at the concrete/steel rebar interface is less than at the concrete/FRP sheet interface and the slip modulus is independent of the type of FRP sheet.",
author = "Lee, {Y. J.} and Boothby, {T. E.} and Bakis, {C. E.} and Antonio Nanni",
year = "1999",
month = "11",
day = "1",
doi = "10.1061/(ASCE)1090-0268(1999)3:4(161)",
language = "English",
volume = "3",
pages = "161--167",
journal = "Journal of Composites for Construction",
issn = "1090-0268",
publisher = "American Society of Civil Engineers (ASCE)",
number = "4",

}

TY - JOUR

T1 - Slip modulus of FRP sheets bonded to concrete

AU - Lee, Y. J.

AU - Boothby, T. E.

AU - Bakis, C. E.

AU - Nanni, Antonio

PY - 1999/11/1

Y1 - 1999/11/1

N2 - An analytical tension-stiffening model was developed for fiber-reinforced polymer (FRP) sheets bonded to reinforced concrete based on equilibrium equations and the assumption of linear behavior between bond stress and slip. Experimental measurements were made on small- and large-scale specimens. For the small-scale specimens, the primer coat thickness (adhesive thickness between concrete and FRP sheet) was varied for each specimen. By comparisons of the experimental data to the analytical results, the slip modulus at the concrete/FRP sheet and concrete/steel interface was established at the service load level. From this study, it was found that primer coat thickness has a modest influence on the slip modulus of the repaired member, and stiffening of this interface slightly enhances the stiffness of the specimen. After the formation of secondary and diagonal tension cracks, the stiffness of the specimen dropped rapidly and the linearly elastic slip modulus assumption could not be applied. The slip modulus at the concrete/steel rebar interface is less than at the concrete/FRP sheet interface and the slip modulus is independent of the type of FRP sheet.

AB - An analytical tension-stiffening model was developed for fiber-reinforced polymer (FRP) sheets bonded to reinforced concrete based on equilibrium equations and the assumption of linear behavior between bond stress and slip. Experimental measurements were made on small- and large-scale specimens. For the small-scale specimens, the primer coat thickness (adhesive thickness between concrete and FRP sheet) was varied for each specimen. By comparisons of the experimental data to the analytical results, the slip modulus at the concrete/FRP sheet and concrete/steel interface was established at the service load level. From this study, it was found that primer coat thickness has a modest influence on the slip modulus of the repaired member, and stiffening of this interface slightly enhances the stiffness of the specimen. After the formation of secondary and diagonal tension cracks, the stiffness of the specimen dropped rapidly and the linearly elastic slip modulus assumption could not be applied. The slip modulus at the concrete/steel rebar interface is less than at the concrete/FRP sheet interface and the slip modulus is independent of the type of FRP sheet.

UR - http://www.scopus.com/inward/record.url?scp=0033226235&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033226235&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)1090-0268(1999)3:4(161)

DO - 10.1061/(ASCE)1090-0268(1999)3:4(161)

M3 - Article

VL - 3

SP - 161

EP - 167

JO - Journal of Composites for Construction

JF - Journal of Composites for Construction

SN - 1090-0268

IS - 4

ER -