Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

External Research Organisations

  • Swiss Federal Laboratories for Material Science and Technology (EMPA)
  • École polytechnique fédérale de Lausanne (EPFL)
  • University of Tehran
View graph of relations

Details

Original languageEnglish
Title of host publication9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
EditorsEmmanuel Ferrier, Karim Benzarti, Jean-Francois Caron
Pages259-266
Number of pages8
ISBN (electronic)9780000000002
Publication statusPublished - 2018
Externally publishedYes
Event9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018 - Paris, France
Duration: 17 Jul 201819 Jul 2018

Publication series

Name9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018
Volume2018-July

Abstract

Bond behavior and anchorage resistance of prestressed CFRP plates to steel substrate have been investigated in the current study. To do so, a set of single lap-shear and prestress release tests was performed on CFRP-to-steel bonded joints, and the feasibility of accelerated curing (AC) of epoxy adhesive by heating was investigated. Furthermore, a set of so called mixed bond tests, with partial prestress release and subsequent lap-shear, was performed to examine the practicability of prestressed strengthening of steel members using AC. A 3D digital image correlation (DIC) technique was used to monitor the bond behavior of prestressed CFRP to steel during prestress release and subsequent lap-shear tests. Experimental results of the current study revealed that AC of epoxy adhesive by heating can be a promising alternative to the conventional room temperature curing (RTC) for strengthening of steel members with externally bonded CFRP plates. It is evident that in prestressed strengthening projects, the prestressing system needs to stay in place to keep the prestressing force constant over the curing of the adhesive. Therefore, AC is certainly beneficial in reducing the required time and cost of such strengthening solutions. Based on the experimental results of the current study, a relatively fast practical solution for strengthening of existing steel members with prestressed bonded CFRP reinforcements is proposed.

Keywords

    Accelerated curing (AC) by heating, Bond behavior of CFRP-to-steel, Digital image correlation (DIC) technique, Lap-shear and prestress release test, Prestressed FRP composites, Strengthening of steel structures

ASJC Scopus subject areas

Cite this

Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates. / Hosseini, A.; Ghafoori, E.; Sadeghi Marzaleh, A. et al.
9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018. ed. / Emmanuel Ferrier; Karim Benzarti; Jean-Francois Caron. 2018. p. 259-266 (9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018; Vol. 2018-July).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Hosseini, A, Ghafoori, E, Sadeghi Marzaleh, A & Motavalli, M 2018, Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates. in E Ferrier, K Benzarti & J-F Caron (eds), 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018. 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018, vol. 2018-July, pp. 259-266, 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018, Paris, France, 17 Jul 2018.
Hosseini, A., Ghafoori, E., Sadeghi Marzaleh, A., & Motavalli, M. (2018). Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates. In E. Ferrier, K. Benzarti, & J.-F. Caron (Eds.), 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018 (pp. 259-266). (9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018; Vol. 2018-July).
Hosseini A, Ghafoori E, Sadeghi Marzaleh A, Motavalli M. Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates. In Ferrier E, Benzarti K, Caron JF, editors, 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018. 2018. p. 259-266. (9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018).
Hosseini, A. ; Ghafoori, E. ; Sadeghi Marzaleh, A. et al. / Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates. 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018. editor / Emmanuel Ferrier ; Karim Benzarti ; Jean-Francois Caron. 2018. pp. 259-266 (9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018).
Download
@inproceedings{f90fcfec0d054206a43c5c95ac202bf8,
title = "Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates",
abstract = "Bond behavior and anchorage resistance of prestressed CFRP plates to steel substrate have been investigated in the current study. To do so, a set of single lap-shear and prestress release tests was performed on CFRP-to-steel bonded joints, and the feasibility of accelerated curing (AC) of epoxy adhesive by heating was investigated. Furthermore, a set of so called mixed bond tests, with partial prestress release and subsequent lap-shear, was performed to examine the practicability of prestressed strengthening of steel members using AC. A 3D digital image correlation (DIC) technique was used to monitor the bond behavior of prestressed CFRP to steel during prestress release and subsequent lap-shear tests. Experimental results of the current study revealed that AC of epoxy adhesive by heating can be a promising alternative to the conventional room temperature curing (RTC) for strengthening of steel members with externally bonded CFRP plates. It is evident that in prestressed strengthening projects, the prestressing system needs to stay in place to keep the prestressing force constant over the curing of the adhesive. Therefore, AC is certainly beneficial in reducing the required time and cost of such strengthening solutions. Based on the experimental results of the current study, a relatively fast practical solution for strengthening of existing steel members with prestressed bonded CFRP reinforcements is proposed.",
keywords = "Accelerated curing (AC) by heating, Bond behavior of CFRP-to-steel, Digital image correlation (DIC) technique, Lap-shear and prestress release test, Prestressed FRP composites, Strengthening of steel structures",
author = "A. Hosseini and E. Ghafoori and {Sadeghi Marzaleh}, A. and M. Motavalli",
note = "Funding Information: The authors gratefully acknowledge the financial support provided by the Swiss National Science Foundation (SNSF Project No. 200021-153609). The authors also would like to thank Msc student Mr. Matthias Wellauer and the technicians of the Structural Engineering Research Laboratory of Empa for their exceptional cooperation in performing the experiments. Publisher Copyright: {\textcopyright} INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering. All rights reserved.; 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018 ; Conference date: 17-07-2018 Through 19-07-2018",
year = "2018",
language = "English",
series = "9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018",
pages = "259--266",
editor = "Emmanuel Ferrier and Karim Benzarti and Jean-Francois Caron",
booktitle = "9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018",

}

Download

TY - GEN

T1 - Feasibility of accelerated curing for strengthening of steel members by prestressed bonded CFRP plates

AU - Hosseini, A.

AU - Ghafoori, E.

AU - Sadeghi Marzaleh, A.

AU - Motavalli, M.

N1 - Funding Information: The authors gratefully acknowledge the financial support provided by the Swiss National Science Foundation (SNSF Project No. 200021-153609). The authors also would like to thank Msc student Mr. Matthias Wellauer and the technicians of the Structural Engineering Research Laboratory of Empa for their exceptional cooperation in performing the experiments. Publisher Copyright: © INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering. All rights reserved.

PY - 2018

Y1 - 2018

N2 - Bond behavior and anchorage resistance of prestressed CFRP plates to steel substrate have been investigated in the current study. To do so, a set of single lap-shear and prestress release tests was performed on CFRP-to-steel bonded joints, and the feasibility of accelerated curing (AC) of epoxy adhesive by heating was investigated. Furthermore, a set of so called mixed bond tests, with partial prestress release and subsequent lap-shear, was performed to examine the practicability of prestressed strengthening of steel members using AC. A 3D digital image correlation (DIC) technique was used to monitor the bond behavior of prestressed CFRP to steel during prestress release and subsequent lap-shear tests. Experimental results of the current study revealed that AC of epoxy adhesive by heating can be a promising alternative to the conventional room temperature curing (RTC) for strengthening of steel members with externally bonded CFRP plates. It is evident that in prestressed strengthening projects, the prestressing system needs to stay in place to keep the prestressing force constant over the curing of the adhesive. Therefore, AC is certainly beneficial in reducing the required time and cost of such strengthening solutions. Based on the experimental results of the current study, a relatively fast practical solution for strengthening of existing steel members with prestressed bonded CFRP reinforcements is proposed.

AB - Bond behavior and anchorage resistance of prestressed CFRP plates to steel substrate have been investigated in the current study. To do so, a set of single lap-shear and prestress release tests was performed on CFRP-to-steel bonded joints, and the feasibility of accelerated curing (AC) of epoxy adhesive by heating was investigated. Furthermore, a set of so called mixed bond tests, with partial prestress release and subsequent lap-shear, was performed to examine the practicability of prestressed strengthening of steel members using AC. A 3D digital image correlation (DIC) technique was used to monitor the bond behavior of prestressed CFRP to steel during prestress release and subsequent lap-shear tests. Experimental results of the current study revealed that AC of epoxy adhesive by heating can be a promising alternative to the conventional room temperature curing (RTC) for strengthening of steel members with externally bonded CFRP plates. It is evident that in prestressed strengthening projects, the prestressing system needs to stay in place to keep the prestressing force constant over the curing of the adhesive. Therefore, AC is certainly beneficial in reducing the required time and cost of such strengthening solutions. Based on the experimental results of the current study, a relatively fast practical solution for strengthening of existing steel members with prestressed bonded CFRP reinforcements is proposed.

KW - Accelerated curing (AC) by heating

KW - Bond behavior of CFRP-to-steel

KW - Digital image correlation (DIC) technique

KW - Lap-shear and prestress release test

KW - Prestressed FRP composites

KW - Strengthening of steel structures

UR - http://www.scopus.com/inward/record.url?scp=85077628617&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85077628617

T3 - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018

SP - 259

EP - 266

BT - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018

A2 - Ferrier, Emmanuel

A2 - Benzarti, Karim

A2 - Caron, Jean-Francois

T2 - 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018

Y2 - 17 July 2018 through 19 July 2018

ER -

By the same author(s)