Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures

Asghar Habibnejad Korayem; Chenyang Li; Qianhui Zhang; Xiao Ling Zhao; Wenhui Duan

Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures

Asghar Habibnejad Korayem, Chenyang Li, Qianhui Zhang, Xiao Ling Zhao, Wenhui Duan

Civil & Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

The behaviour of steel/CFRP double strap joints with carbon nanotube (CNT) modified epoxy under moderately elevated temperatures (23 to 70°C) is investigated. Experimental test results presented in this paper include bond strength, CFRP strain distribution and bond-slip relationship. Results show that, compared with neat epoxy, CNT-epoxy can provide a significant increase (about twofold) in bond strength at moderately elevated temperatures. The ultimate axial strain along CFRP laminates at joints with CNT-epoxy adhesive is greater than that with neat epoxy. The bond-slip curve shape transits from a trapezoidal to a triangular shape when the test temperature increases from ambient to moderately elevated temperatures. The peak shear stress and the fracture energy of joints bonded with CNT-epoxy adhesive are higher than those of joints with neat epoxy. It is demonstrated that incorporation of CNTs into the bond adhesive allows better exploitation of the potential of the CFRP system for strengthening steel structures at moderately elevated temperatures.

Original language	English
Title of host publication	The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014)
Subtitle of host publication	Vancouver, British Columbia, Canada, August 20-22, 2014 [proceedings]
Editors	Raafat El-Hacha
Place of Publication	Canada
Publisher	International Institute for FRP in Construction (IIFC)
Pages	1-6
Number of pages	6
ISBN (Electronic)	9781771363082
ISBN (Print)	9781771363082
Publication status	Published - 2014
Event	International Conference on FRP Composites in Civil Engineering (CICE) 2014 - University of British Columbia, Vancouver, Canada Duration: 20 Aug 2014 → 22 Aug 2014 Conference number: 7th https://www.iifc.org/proceedings/CICE_2014/CICE2014.pdf

Publication series

Name	Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014

Conference

Conference	International Conference on FRP Composites in Civil Engineering (CICE) 2014
Abbreviated title	CICE 2014
Country/Territory	Canada
City	Vancouver
Period	20/08/14 → 22/08/14
Internet address	https://www.iifc.org/proceedings/CICE_2014/CICE2014.pdf

Cite this

Habibnejad Korayem, A., Li, C., Zhang, Q., Zhao, X. L., & Duan, W. (2014). Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures. In R. El-Hacha (Ed.), The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014): Vancouver, British Columbia, Canada, August 20-22, 2014 [proceedings] (pp. 1-6). Article Paper 426 (Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014). International Institute for FRP in Construction (IIFC).

Habibnejad Korayem, Asghar ; Li, Chenyang ; Zhang, Qianhui et al. / Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures. The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014): Vancouver, British Columbia, Canada, August 20-22, 2014 [proceedings]. editor / Raafat El-Hacha. Canada : International Institute for FRP in Construction (IIFC), 2014. pp. 1-6 (Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014).

@inproceedings{2c2a429f34cb44bab5725cf87d7b452f,

title = "Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures",

abstract = "The behaviour of steel/CFRP double strap joints with carbon nanotube (CNT) modified epoxy under moderately elevated temperatures (23 to 70°C) is investigated. Experimental test results presented in this paper include bond strength, CFRP strain distribution and bond-slip relationship. Results show that, compared with neat epoxy, CNT-epoxy can provide a significant increase (about twofold) in bond strength at moderately elevated temperatures. The ultimate axial strain along CFRP laminates at joints with CNT-epoxy adhesive is greater than that with neat epoxy. The bond-slip curve shape transits from a trapezoidal to a triangular shape when the test temperature increases from ambient to moderately elevated temperatures. The peak shear stress and the fracture energy of joints bonded with CNT-epoxy adhesive are higher than those of joints with neat epoxy. It is demonstrated that incorporation of CNTs into the bond adhesive allows better exploitation of the potential of the CFRP system for strengthening steel structures at moderately elevated temperatures.",

author = "{Habibnejad Korayem}, Asghar and Chenyang Li and Qianhui Zhang and Zhao, {Xiao Ling} and Wenhui Duan",

year = "2014",

language = "English",

isbn = "9781771363082",

series = "Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014",

publisher = "International Institute for FRP in Construction (IIFC)",

pages = "1--6",

editor = "Raafat El-Hacha",

booktitle = "The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014)",

note = "International Conference on FRP Composites in Civil Engineering (CICE) 2014, CICE 2014 ; Conference date: 20-08-2014 Through 22-08-2014",

url = "https://www.iifc.org/proceedings/CICE_2014/CICE2014.pdf",

}

Habibnejad Korayem, A, Li, C, Zhang, Q, Zhao, XL & Duan, W 2014, Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures. in R El-Hacha (ed.), The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014): Vancouver, British Columbia, Canada, August 20-22, 2014 [proceedings]., Paper 426, Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014, International Institute for FRP in Construction (IIFC), Canada, pp. 1-6, International Conference on FRP Composites in Civil Engineering (CICE) 2014, Vancouver, British Columbia, Canada, 20/08/14.

Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures. / Habibnejad Korayem, Asghar; Li, Chenyang; Zhang, Qianhui et al.
The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014): Vancouver, British Columbia, Canada, August 20-22, 2014 [proceedings]. ed. / Raafat El-Hacha. Canada: International Institute for FRP in Construction (IIFC), 2014. p. 1-6 Paper 426 (Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

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T1 - Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures

AU - Habibnejad Korayem, Asghar

AU - Li, Chenyang

AU - Zhang, Qianhui

AU - Zhao, Xiao Ling

AU - Duan, Wenhui

N1 - Conference code: 7th

PY - 2014

Y1 - 2014

N2 - The behaviour of steel/CFRP double strap joints with carbon nanotube (CNT) modified epoxy under moderately elevated temperatures (23 to 70°C) is investigated. Experimental test results presented in this paper include bond strength, CFRP strain distribution and bond-slip relationship. Results show that, compared with neat epoxy, CNT-epoxy can provide a significant increase (about twofold) in bond strength at moderately elevated temperatures. The ultimate axial strain along CFRP laminates at joints with CNT-epoxy adhesive is greater than that with neat epoxy. The bond-slip curve shape transits from a trapezoidal to a triangular shape when the test temperature increases from ambient to moderately elevated temperatures. The peak shear stress and the fracture energy of joints bonded with CNT-epoxy adhesive are higher than those of joints with neat epoxy. It is demonstrated that incorporation of CNTs into the bond adhesive allows better exploitation of the potential of the CFRP system for strengthening steel structures at moderately elevated temperatures.

AB - The behaviour of steel/CFRP double strap joints with carbon nanotube (CNT) modified epoxy under moderately elevated temperatures (23 to 70°C) is investigated. Experimental test results presented in this paper include bond strength, CFRP strain distribution and bond-slip relationship. Results show that, compared with neat epoxy, CNT-epoxy can provide a significant increase (about twofold) in bond strength at moderately elevated temperatures. The ultimate axial strain along CFRP laminates at joints with CNT-epoxy adhesive is greater than that with neat epoxy. The bond-slip curve shape transits from a trapezoidal to a triangular shape when the test temperature increases from ambient to moderately elevated temperatures. The peak shear stress and the fracture energy of joints bonded with CNT-epoxy adhesive are higher than those of joints with neat epoxy. It is demonstrated that incorporation of CNTs into the bond adhesive allows better exploitation of the potential of the CFRP system for strengthening steel structures at moderately elevated temperatures.

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M3 - Conference Paper

SN - 9781771363082

T3 - Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014

SP - 1

EP - 6

BT - The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014)

A2 - El-Hacha, Raafat

PB - International Institute for FRP in Construction (IIFC)

CY - Canada

T2 - International Conference on FRP Composites in Civil Engineering (CICE) 2014

Y2 - 20 August 2014 through 22 August 2014

ER -

Habibnejad Korayem A, Li C, Zhang Q, Zhao XL, Duan W. Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures. In El-Hacha R, editor, The 7th International Conference on FRP Composites in Civil Engineering (CICE 2014): Vancouver, British Columbia, Canada, August 20-22, 2014 [proceedings]. Canada: International Institute for FRP in Construction (IIFC). 2014. p. 1-6. Paper 426. (Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, CICE 2014).

Steel/CFRP joint behaviour with carbon nanotube modified epoxy adhesive at elevated temperatures

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