Bond of fiber-reinforced polymer laminates to concrete

Laura De Lorenzis, Brian Miller, Antonio Nanni

Research output: Contribution to journalArticle

227 Citations (Scopus)

Abstract

Fiber-reinforced polymer (FRF) laminates are being successfully used worldwide for strengthening existing reinforced concrete structures. The bond of FRP reinforcement to the concrete substrate is of critical importance for the effectiveness of the technique. In this project, flexural test specimens were prepared to address some of the factors expected to affect bond, namely, bonded length, concrete strength, number of plies (stiffness), ply width, and, to a limited extent, surface preparation. Experimental results are presented and discussed herein. A linear bond stress-slip relationship, along with a simple shear model for the evaluation of the slip modulus, is used to predict the strain distribution at moderate load levels. Finally, expressions of the peeling load and the effective bond length are presented. A design equation is proposed for calculating the effective FRP ultimate strain to be used in design to account for bond-controlled failure.

Original languageEnglish
Pages (from-to)256-264
Number of pages9
JournalACI Materials Journal
Volume98
Issue number3
StatePublished - May 1 2001
Externally publishedYes

Fingerprint

Laminates
Polymers
Concretes
Peeling
Fibers
Bond length
Concrete construction
Reinforced concrete
Loads (forces)
Reinforcement
Stiffness
Substrates

Keywords

  • Bond
  • Concrete
  • Development length
  • External reinforcement
  • Fiber-reinforced polymers
  • Slip

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

Cite this

Bond of fiber-reinforced polymer laminates to concrete. / De Lorenzis, Laura; Miller, Brian; Nanni, Antonio.

In: ACI Materials Journal, Vol. 98, No. 3, 01.05.2001, p. 256-264.

Research output: Contribution to journalArticle

De Lorenzis, L, Miller, B & Nanni, A 2001, 'Bond of fiber-reinforced polymer laminates to concrete', ACI Materials Journal, vol. 98, no. 3, pp. 256-264.
De Lorenzis, Laura ; Miller, Brian ; Nanni, Antonio. / Bond of fiber-reinforced polymer laminates to concrete. In: ACI Materials Journal. 2001 ; Vol. 98, No. 3. pp. 256-264.
@article{45ad961b88af4e69a0acb7b659dca252,
title = "Bond of fiber-reinforced polymer laminates to concrete",
abstract = "Fiber-reinforced polymer (FRF) laminates are being successfully used worldwide for strengthening existing reinforced concrete structures. The bond of FRP reinforcement to the concrete substrate is of critical importance for the effectiveness of the technique. In this project, flexural test specimens were prepared to address some of the factors expected to affect bond, namely, bonded length, concrete strength, number of plies (stiffness), ply width, and, to a limited extent, surface preparation. Experimental results are presented and discussed herein. A linear bond stress-slip relationship, along with a simple shear model for the evaluation of the slip modulus, is used to predict the strain distribution at moderate load levels. Finally, expressions of the peeling load and the effective bond length are presented. A design equation is proposed for calculating the effective FRP ultimate strain to be used in design to account for bond-controlled failure.",
keywords = "Bond, Concrete, Development length, External reinforcement, Fiber-reinforced polymers, Slip",
author = "{De Lorenzis}, Laura and Brian Miller and Antonio Nanni",
year = "2001",
month = "5",
day = "1",
language = "English",
volume = "98",
pages = "256--264",
journal = "ACI Materials Journal",
issn = "0889-325X",
publisher = "American Concrete Institute",
number = "3",

}

TY - JOUR

T1 - Bond of fiber-reinforced polymer laminates to concrete

AU - De Lorenzis, Laura

AU - Miller, Brian

AU - Nanni, Antonio

PY - 2001/5/1

Y1 - 2001/5/1

N2 - Fiber-reinforced polymer (FRF) laminates are being successfully used worldwide for strengthening existing reinforced concrete structures. The bond of FRP reinforcement to the concrete substrate is of critical importance for the effectiveness of the technique. In this project, flexural test specimens were prepared to address some of the factors expected to affect bond, namely, bonded length, concrete strength, number of plies (stiffness), ply width, and, to a limited extent, surface preparation. Experimental results are presented and discussed herein. A linear bond stress-slip relationship, along with a simple shear model for the evaluation of the slip modulus, is used to predict the strain distribution at moderate load levels. Finally, expressions of the peeling load and the effective bond length are presented. A design equation is proposed for calculating the effective FRP ultimate strain to be used in design to account for bond-controlled failure.

AB - Fiber-reinforced polymer (FRF) laminates are being successfully used worldwide for strengthening existing reinforced concrete structures. The bond of FRP reinforcement to the concrete substrate is of critical importance for the effectiveness of the technique. In this project, flexural test specimens were prepared to address some of the factors expected to affect bond, namely, bonded length, concrete strength, number of plies (stiffness), ply width, and, to a limited extent, surface preparation. Experimental results are presented and discussed herein. A linear bond stress-slip relationship, along with a simple shear model for the evaluation of the slip modulus, is used to predict the strain distribution at moderate load levels. Finally, expressions of the peeling load and the effective bond length are presented. A design equation is proposed for calculating the effective FRP ultimate strain to be used in design to account for bond-controlled failure.

KW - Bond

KW - Concrete

KW - Development length

KW - External reinforcement

KW - Fiber-reinforced polymers

KW - Slip

UR - http://www.scopus.com/inward/record.url?scp=0035353821&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035353821&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0035353821

VL - 98

SP - 256

EP - 264

JO - ACI Materials Journal

JF - ACI Materials Journal

SN - 0889-325X

IS - 3

ER -