EFFECTS OF EXISTING CRACKS ON FRP-TO-CONCRETE INTERFACIAL BEHAVIOR

Cheng Jiang; Baolin Wan; Yufei Wu

EFFECTS OF EXISTING CRACKS ON FRP-TO-CONCRETE INTERFACIAL BEHAVIOR

Cheng Jiang
, Baolin Wan
, Yufei Wu

Department of Architecture and Civil Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

The concrete structures which need to be strengthened by externally bonded (EB) FRP normally have existing cracks. In order to study the effects of the existing cracks on the bond slip relationship, an experimental program of single shear pull-out tests on EB-FRP concrete joints was performed in this research. Grooves were cut on the surface of concrete blocks before applying FRP on it to represent the existing cracks. The spacing and widths of the grooves were varied in different specimens. The test results show that there were two-sided effects of the existing cracks on the bond slip relationship. When the crack amount was great and the crack width was wide, it caused degradation of the bond slip relationship. However, a small number of thin cracks enhanced the bond slip relationship for a certain degree. The energy releasing at these cracks’ locations might be the reason for the improvement. It is also found that specimens with more than 10% concrete failure could have a relatively stable strength.

Original language	English
Title of host publication	Proceedings of the 6th Asia-Pacific Conference on FRP in Structures, APFIS 2017
Publisher	International Institute for FRP in Construction (IIFC)
Publication status	Published - Jul 2017
Event	6th Asia-Pacific Conference on FRP in Structures (APFIS 2017) - , Singapore Duration: 19 Jul 2017 → 21 Jul 2017 https://www.iifc.org/publications-resources/proceedings/ http://ddl.escience.cn/f/M8NU

Publication series

Name	Proceedings of the Asia-Pacific Conference on FRP in Structures, APFIS

Conference

Conference	6th Asia-Pacific Conference on FRP in Structures (APFIS 2017)
Abbreviated title	APFIS2017
Place	Singapore
Period	19/07/17 → 21/07/17
Internet address	https://www.iifc.org/publications-resources/proceedings/ http://ddl.escience.cn/f/M8NU

Research Keywords

Bond-slip relationship
Concrete
Crack
FRP

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Cite this

@inproceedings{2b99d3aa2f12400581daaf92b6871b1b,

title = "EFFECTS OF EXISTING CRACKS ON FRP-TO-CONCRETE INTERFACIAL BEHAVIOR",

abstract = "The concrete structures which need to be strengthened by externally bonded (EB) FRP normally have existing cracks. In order to study the effects of the existing cracks on the bond slip relationship, an experimental program of single shear pull-out tests on EB-FRP concrete joints was performed in this research. Grooves were cut on the surface of concrete blocks before applying FRP on it to represent the existing cracks. The spacing and widths of the grooves were varied in different specimens. The test results show that there were two-sided effects of the existing cracks on the bond slip relationship. When the crack amount was great and the crack width was wide, it caused degradation of the bond slip relationship. However, a small number of thin cracks enhanced the bond slip relationship for a certain degree. The energy releasing at these cracks{\textquoteright} locations might be the reason for the improvement. It is also found that specimens with more than 10\% concrete failure could have a relatively stable strength.",

keywords = "Bond-slip relationship, Concrete, Crack, FRP",

author = "Cheng Jiang and Baolin Wan and Yufei Wu",

year = "2017",

month = jul,

language = "English",

series = "Proceedings of the Asia-Pacific Conference on FRP in Structures, APFIS",

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

booktitle = "Proceedings of the 6th Asia-Pacific Conference on FRP in Structures, APFIS 2017",

note = "6th Asia-Pacific Conference on FRP in Structures (APFIS 2017), APFIS2017 ; Conference date: 19-07-2017 Through 21-07-2017",

url = "https://www.iifc.org/publications-resources/proceedings/, http://ddl.escience.cn/f/M8NU",

}

Jiang, C, Wan, B & Wu, Y 2017, EFFECTS OF EXISTING CRACKS ON FRP-TO-CONCRETE INTERFACIAL BEHAVIOR. in Proceedings of the 6th Asia-Pacific Conference on FRP in Structures, APFIS 2017. Proceedings of the Asia-Pacific Conference on FRP in Structures, APFIS, International Institute for FRP in Construction (IIFC), 6th Asia-Pacific Conference on FRP in Structures (APFIS 2017), Singapore, 19/07/17.

EFFECTS OF EXISTING CRACKS ON FRP-TO-CONCRETE INTERFACIAL BEHAVIOR. / Jiang, Cheng; Wan, Baolin; Wu, Yufei.
Proceedings of the 6th Asia-Pacific Conference on FRP in Structures, APFIS 2017. International Institute for FRP in Construction (IIFC), 2017. (Proceedings of the Asia-Pacific Conference on FRP in Structures, APFIS).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - EFFECTS OF EXISTING CRACKS ON FRP-TO-CONCRETE INTERFACIAL BEHAVIOR

AU - Jiang, Cheng

AU - Wan, Baolin

AU - Wu, Yufei

PY - 2017/7

Y1 - 2017/7

N2 - The concrete structures which need to be strengthened by externally bonded (EB) FRP normally have existing cracks. In order to study the effects of the existing cracks on the bond slip relationship, an experimental program of single shear pull-out tests on EB-FRP concrete joints was performed in this research. Grooves were cut on the surface of concrete blocks before applying FRP on it to represent the existing cracks. The spacing and widths of the grooves were varied in different specimens. The test results show that there were two-sided effects of the existing cracks on the bond slip relationship. When the crack amount was great and the crack width was wide, it caused degradation of the bond slip relationship. However, a small number of thin cracks enhanced the bond slip relationship for a certain degree. The energy releasing at these cracks’ locations might be the reason for the improvement. It is also found that specimens with more than 10% concrete failure could have a relatively stable strength.

AB - The concrete structures which need to be strengthened by externally bonded (EB) FRP normally have existing cracks. In order to study the effects of the existing cracks on the bond slip relationship, an experimental program of single shear pull-out tests on EB-FRP concrete joints was performed in this research. Grooves were cut on the surface of concrete blocks before applying FRP on it to represent the existing cracks. The spacing and widths of the grooves were varied in different specimens. The test results show that there were two-sided effects of the existing cracks on the bond slip relationship. When the crack amount was great and the crack width was wide, it caused degradation of the bond slip relationship. However, a small number of thin cracks enhanced the bond slip relationship for a certain degree. The energy releasing at these cracks’ locations might be the reason for the improvement. It is also found that specimens with more than 10% concrete failure could have a relatively stable strength.

KW - Bond-slip relationship

KW - Concrete

KW - Crack

KW - FRP

UR - https://www.scopus.com/pages/publications/85084944064

UR - https://www.scopus.com/pages/publications/85084944064#tab=impact

M3 - RGC 32 - Refereed conference paper (with host publication)

T3 - Proceedings of the Asia-Pacific Conference on FRP in Structures, APFIS

BT - Proceedings of the 6th Asia-Pacific Conference on FRP in Structures, APFIS 2017

PB - International Institute for FRP in Construction (IIFC)

T2 - 6th Asia-Pacific Conference on FRP in Structures (APFIS 2017)

Y2 - 19 July 2017 through 21 July 2017

ER -

EFFECTS OF EXISTING CRACKS ON FRP-TO-CONCRETE INTERFACIAL BEHAVIOR

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