Behavior of GFRP bar reinforced geopolymer concrete filled GFRP tube columns under different loading conditions

Junaid Ahmad; Tao Yu; Muhammad N.S. Hadi

doi:10.1016/j.istruc.2021.05.023

Behavior of GFRP bar reinforced geopolymer concrete filled GFRP tube columns under different loading conditions

Junaid Ahmad
, Tao Yu
, Muhammad N.S. Hadi

Research output: Journal article publication › Journal article › Academic research › peer-review

30 Citations (Scopus)

Abstract

This paper proposes a new type of column. The glass fiber reinforced polymer (GFRP) bar reinforced geopolymer concrete (GPC) filled GFRP tube column is presented as a potential substitute of steel reinforced ordinary Portland cement concrete (OPC) column. Type of concrete (OPC and GPC), type of longitudinal reinforcement bars (steel and GFRP) and type of transverse reinforcement (steel helix and GFRP tube) were the test parameters investigated in this study. The specimens of 200 mm diameter and 800 mm height were tested under different loading conditions. Experimental load-axial deformation, load-lateral deformation and flexural load-midspan deflection of the tested specimens are presented and discussed. An equation was also proposed for the prediction of the concentric load capacity of the column. It was found that GFRP reinforcement and GFRP tube confinement resulted in a higher ductility enhancement for GPC based specimens as compared to the OPC based specimens. Also, the ductility of GFRP bar reinforced GPC or OPC filled GFRP tube columns increased with the load eccentricity. Whereas, the ductility of the steel reinforced specimens decreased with the increase of load eccentricity.

Original language	English
Pages (from-to)	1633-1644
Number of pages	12
Journal	Structures
Volume	33
DOIs	https://doi.org/10.1016/j.istruc.2021.05.023
Publication status	Published - Oct 2021

Keywords

CFFT
Concentric load capacity
Ductility
Eccentric loading
Geopolymer concrete
GFRP bar
GFRP tube

ASJC Scopus subject areas

Civil and Structural Engineering
Architecture
Building and Construction
Safety, Risk, Reliability and Quality

More information

10.1016/j.istruc.2021.05.023

http://hdl.handle.net/10397/97992

Cite this

@article{d28094adc79641eda448926a895bafc1,

title = "Behavior of GFRP bar reinforced geopolymer concrete filled GFRP tube columns under different loading conditions",

abstract = "This paper proposes a new type of column. The glass fiber reinforced polymer (GFRP) bar reinforced geopolymer concrete (GPC) filled GFRP tube column is presented as a potential substitute of steel reinforced ordinary Portland cement concrete (OPC) column. Type of concrete (OPC and GPC), type of longitudinal reinforcement bars (steel and GFRP) and type of transverse reinforcement (steel helix and GFRP tube) were the test parameters investigated in this study. The specimens of 200 mm diameter and 800 mm height were tested under different loading conditions. Experimental load-axial deformation, load-lateral deformation and flexural load-midspan deflection of the tested specimens are presented and discussed. An equation was also proposed for the prediction of the concentric load capacity of the column. It was found that GFRP reinforcement and GFRP tube confinement resulted in a higher ductility enhancement for GPC based specimens as compared to the OPC based specimens. Also, the ductility of GFRP bar reinforced GPC or OPC filled GFRP tube columns increased with the load eccentricity. Whereas, the ductility of the steel reinforced specimens decreased with the increase of load eccentricity.",

keywords = "CFFT, Concentric load capacity, Ductility, Eccentric loading, Geopolymer concrete, GFRP bar, GFRP tube",

author = "Junaid Ahmad and Tao Yu and Hadi, \{Muhammad N.S.\}",

note = "Funding Information: The authors would like to acknowledge the financial support provided by the Australian Government through the Australian Research Council's Discovery Projects funding scheme (project ID: DP170102992). The authors are also grateful to Boral Australia, Australasian Slag Association (ASA), BASF chemicals Australia and Domeshells Australia for providing the fly ash, GGBFS, superplasticizer and GFRP reinforcement, respectively for this study. Also thanks to the technical staff at the Civil Engineering High Bay Labs, University of Wollongong, Australia for their continuous support during experimental work especially Mr. Ritchie Mclean. The first author would also like to acknowledge the Higher Education Commission (HEC) Pakistan and the University of Wollongong, Australia for his PhD scholarship support. Funding Information: The authors would like to acknowledge the financial support provided by the Australian Government through the Australian Research Council{\textquoteright}s Discovery Projects funding scheme (project ID: DP170102992). The authors are also grateful to Boral Australia, Australasian Slag Association (ASA), BASF chemicals Australia and Domeshells Australia for providing the fly ash, GGBFS, superplasticizer and GFRP reinforcement, respectively for this study. Also thanks to the technical staff at the Civil Engineering High Bay Labs, University of Wollongong, Australia for their continuous support during experimental work especially Mr. Ritchie Mclean. The first author would also like to acknowledge the Higher Education Commission (HEC) Pakistan and the University of Wollongong, Australia for his PhD scholarship support. Publisher Copyright: {\textcopyright} 2021 Institution of Structural Engineers",

year = "2021",

month = oct,

doi = "10.1016/j.istruc.2021.05.023",

language = "English",

volume = "33",

pages = "1633--1644",

journal = "Structures",

issn = "2352-0124",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Behavior of GFRP bar reinforced geopolymer concrete filled GFRP tube columns under different loading conditions

AU - Ahmad, Junaid

AU - Yu, Tao

AU - Hadi, Muhammad N.S.

N1 - Funding Information: The authors would like to acknowledge the financial support provided by the Australian Government through the Australian Research Council's Discovery Projects funding scheme (project ID: DP170102992). The authors are also grateful to Boral Australia, Australasian Slag Association (ASA), BASF chemicals Australia and Domeshells Australia for providing the fly ash, GGBFS, superplasticizer and GFRP reinforcement, respectively for this study. Also thanks to the technical staff at the Civil Engineering High Bay Labs, University of Wollongong, Australia for their continuous support during experimental work especially Mr. Ritchie Mclean. The first author would also like to acknowledge the Higher Education Commission (HEC) Pakistan and the University of Wollongong, Australia for his PhD scholarship support. Funding Information: The authors would like to acknowledge the financial support provided by the Australian Government through the Australian Research Council’s Discovery Projects funding scheme (project ID: DP170102992). The authors are also grateful to Boral Australia, Australasian Slag Association (ASA), BASF chemicals Australia and Domeshells Australia for providing the fly ash, GGBFS, superplasticizer and GFRP reinforcement, respectively for this study. Also thanks to the technical staff at the Civil Engineering High Bay Labs, University of Wollongong, Australia for their continuous support during experimental work especially Mr. Ritchie Mclean. The first author would also like to acknowledge the Higher Education Commission (HEC) Pakistan and the University of Wollongong, Australia for his PhD scholarship support. Publisher Copyright: © 2021 Institution of Structural Engineers

PY - 2021/10

Y1 - 2021/10

N2 - This paper proposes a new type of column. The glass fiber reinforced polymer (GFRP) bar reinforced geopolymer concrete (GPC) filled GFRP tube column is presented as a potential substitute of steel reinforced ordinary Portland cement concrete (OPC) column. Type of concrete (OPC and GPC), type of longitudinal reinforcement bars (steel and GFRP) and type of transverse reinforcement (steel helix and GFRP tube) were the test parameters investigated in this study. The specimens of 200 mm diameter and 800 mm height were tested under different loading conditions. Experimental load-axial deformation, load-lateral deformation and flexural load-midspan deflection of the tested specimens are presented and discussed. An equation was also proposed for the prediction of the concentric load capacity of the column. It was found that GFRP reinforcement and GFRP tube confinement resulted in a higher ductility enhancement for GPC based specimens as compared to the OPC based specimens. Also, the ductility of GFRP bar reinforced GPC or OPC filled GFRP tube columns increased with the load eccentricity. Whereas, the ductility of the steel reinforced specimens decreased with the increase of load eccentricity.

AB - This paper proposes a new type of column. The glass fiber reinforced polymer (GFRP) bar reinforced geopolymer concrete (GPC) filled GFRP tube column is presented as a potential substitute of steel reinforced ordinary Portland cement concrete (OPC) column. Type of concrete (OPC and GPC), type of longitudinal reinforcement bars (steel and GFRP) and type of transverse reinforcement (steel helix and GFRP tube) were the test parameters investigated in this study. The specimens of 200 mm diameter and 800 mm height were tested under different loading conditions. Experimental load-axial deformation, load-lateral deformation and flexural load-midspan deflection of the tested specimens are presented and discussed. An equation was also proposed for the prediction of the concentric load capacity of the column. It was found that GFRP reinforcement and GFRP tube confinement resulted in a higher ductility enhancement for GPC based specimens as compared to the OPC based specimens. Also, the ductility of GFRP bar reinforced GPC or OPC filled GFRP tube columns increased with the load eccentricity. Whereas, the ductility of the steel reinforced specimens decreased with the increase of load eccentricity.

KW - CFFT

KW - Concentric load capacity

KW - Ductility

KW - Eccentric loading

KW - Geopolymer concrete

KW - GFRP bar

KW - GFRP tube

UR - https://www.scopus.com/pages/publications/85106589324

U2 - 10.1016/j.istruc.2021.05.023

DO - 10.1016/j.istruc.2021.05.023

M3 - Journal article

AN - SCOPUS:85106589324

SN - 2352-0124

VL - 33

SP - 1633

EP - 1644

JO - Structures

JF - Structures

ER -

Behavior of GFRP bar reinforced geopolymer concrete filled GFRP tube columns under different loading conditions

Abstract

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this