Innovative additional aluminum alloy ribs anchorage for improving the bond reliability of pretensioned CFRP bar: A feasibility study

Hong Zhu; Qiang Wang; Jian Guo Dai; Chunlin Wang; Gang Wu

doi:10.1016/j.compstruct.2021.114817

Innovative additional aluminum alloy ribs anchorage for improving the bond reliability of pretensioned CFRP bar: A feasibility study

Hong Zhu, Qiang Wang, Jian Guo Dai, Chunlin Wang, Gang Wu

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

11 Citations (Scopus)

Abstract

An innovative anchorage method for CFRP bars through providing additional aluminium alloy ribs (ARs for brevity) is proposed in this paper. The results of the pull-out tests are firstly summarized to comprehensively evaluate the bond performance of ARs anchored CFRP bars in concrete and the arrangement of the ARs along the bond length of the CFRP bars was meanwhile optimized. The transfer length test for the pretensioned CFRP bar was then performed to investigate the effect of the ARs on the bond transfer at prestress releasing. It was found that ARs anchored bar had resulted in a shorter transfer length in comparison to that of the unanchored bar due to an improved bond mechanism. Finally, the feasibility of using such ARs anchored CFRP bars in pretensioned prestressed concrete (PPC) members was explored by performing short- and long-term tests, respectively. The results showed that the ARs presence could lead to benefits of enhancing the shear anti-cracking capacity, reducing the end slips, and delaying the long-term deflection increase of the CFRP reinforced PPC beams, proving that the ARs can act as a reliable end anchorage system for pretensioned CFRP bars in PPC members.

Original language	English
Article number	114817
Journal	Composite Structures
Volume	280
DOIs	https://doi.org/10.1016/j.compstruct.2021.114817
Publication status	Published - 15 Jan 2022

Keywords

Additional aluminium alloy ribs
Bond
CFRP bar
Pretensioned concrete
Slippage

ASJC Scopus subject areas

Ceramics and Composites
Civil and Structural Engineering

More information

10.1016/j.compstruct.2021.114817

Cite this

@article{a0685c9030fb48bb89cd6203c476e816,

title = "Innovative additional aluminum alloy ribs anchorage for improving the bond reliability of pretensioned CFRP bar: A feasibility study",

abstract = "An innovative anchorage method for CFRP bars through providing additional aluminium alloy ribs (ARs for brevity) is proposed in this paper. The results of the pull-out tests are firstly summarized to comprehensively evaluate the bond performance of ARs anchored CFRP bars in concrete and the arrangement of the ARs along the bond length of the CFRP bars was meanwhile optimized. The transfer length test for the pretensioned CFRP bar was then performed to investigate the effect of the ARs on the bond transfer at prestress releasing. It was found that ARs anchored bar had resulted in a shorter transfer length in comparison to that of the unanchored bar due to an improved bond mechanism. Finally, the feasibility of using such ARs anchored CFRP bars in pretensioned prestressed concrete (PPC) members was explored by performing short- and long-term tests, respectively. The results showed that the ARs presence could lead to benefits of enhancing the shear anti-cracking capacity, reducing the end slips, and delaying the long-term deflection increase of the CFRP reinforced PPC beams, proving that the ARs can act as a reliable end anchorage system for pretensioned CFRP bars in PPC members.",

keywords = "Additional aluminium alloy ribs, Bond, CFRP bar, Pretensioned concrete, Slippage",

author = "Hong Zhu and Qiang Wang and Dai, {Jian Guo} and Chunlin Wang and Gang Wu",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (grant number 52078127), the Fundamental Research Funds for the Central University (grant number 2242021k30010), the Scientific Research Foundation of Graduate School of Southeast University (grant number YBPY1921), as well as the Postgraduate Research?Practice innovation Program of Jiangsu Province (grant number KYCX19_0092). The authors are also grateful to the experimental work conducted by Weiqiang Su and Yixuan Tong from Southeast University. Funding Information: This work was supported by the National Natural Science Foundation of China (grant number 52078127 ), the Fundamental Research Funds for the Central University (grant number 2242021k30010), the Scientific Research Foundation of Graduate School of Southeast University (grant number YBPY1921 ), as well as the Postgraduate Research＆Practice innovation Program of Jiangsu Province (grant number KYCX19_0092). The authors are also grateful to the experimental work conducted by Weiqiang Su and Yixuan Tong from Southeast University. Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = jan,

day = "15",

doi = "10.1016/j.compstruct.2021.114817",

language = "English",

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TY - JOUR

T1 - Innovative additional aluminum alloy ribs anchorage for improving the bond reliability of pretensioned CFRP bar

T2 - A feasibility study

AU - Zhu, Hong

AU - Wang, Qiang

AU - Dai, Jian Guo

AU - Wang, Chunlin

AU - Wu, Gang

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (grant number 52078127), the Fundamental Research Funds for the Central University (grant number 2242021k30010), the Scientific Research Foundation of Graduate School of Southeast University (grant number YBPY1921), as well as the Postgraduate Research?Practice innovation Program of Jiangsu Province (grant number KYCX19_0092). The authors are also grateful to the experimental work conducted by Weiqiang Su and Yixuan Tong from Southeast University. Funding Information: This work was supported by the National Natural Science Foundation of China (grant number 52078127 ), the Fundamental Research Funds for the Central University (grant number 2242021k30010), the Scientific Research Foundation of Graduate School of Southeast University (grant number YBPY1921 ), as well as the Postgraduate Research＆Practice innovation Program of Jiangsu Province (grant number KYCX19_0092). The authors are also grateful to the experimental work conducted by Weiqiang Su and Yixuan Tong from Southeast University. Publisher Copyright: © 2021

PY - 2022/1/15

Y1 - 2022/1/15

N2 - An innovative anchorage method for CFRP bars through providing additional aluminium alloy ribs (ARs for brevity) is proposed in this paper. The results of the pull-out tests are firstly summarized to comprehensively evaluate the bond performance of ARs anchored CFRP bars in concrete and the arrangement of the ARs along the bond length of the CFRP bars was meanwhile optimized. The transfer length test for the pretensioned CFRP bar was then performed to investigate the effect of the ARs on the bond transfer at prestress releasing. It was found that ARs anchored bar had resulted in a shorter transfer length in comparison to that of the unanchored bar due to an improved bond mechanism. Finally, the feasibility of using such ARs anchored CFRP bars in pretensioned prestressed concrete (PPC) members was explored by performing short- and long-term tests, respectively. The results showed that the ARs presence could lead to benefits of enhancing the shear anti-cracking capacity, reducing the end slips, and delaying the long-term deflection increase of the CFRP reinforced PPC beams, proving that the ARs can act as a reliable end anchorage system for pretensioned CFRP bars in PPC members.

AB - An innovative anchorage method for CFRP bars through providing additional aluminium alloy ribs (ARs for brevity) is proposed in this paper. The results of the pull-out tests are firstly summarized to comprehensively evaluate the bond performance of ARs anchored CFRP bars in concrete and the arrangement of the ARs along the bond length of the CFRP bars was meanwhile optimized. The transfer length test for the pretensioned CFRP bar was then performed to investigate the effect of the ARs on the bond transfer at prestress releasing. It was found that ARs anchored bar had resulted in a shorter transfer length in comparison to that of the unanchored bar due to an improved bond mechanism. Finally, the feasibility of using such ARs anchored CFRP bars in pretensioned prestressed concrete (PPC) members was explored by performing short- and long-term tests, respectively. The results showed that the ARs presence could lead to benefits of enhancing the shear anti-cracking capacity, reducing the end slips, and delaying the long-term deflection increase of the CFRP reinforced PPC beams, proving that the ARs can act as a reliable end anchorage system for pretensioned CFRP bars in PPC members.

KW - Additional aluminium alloy ribs

KW - Bond

KW - CFRP bar

KW - Pretensioned concrete

KW - Slippage

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DO - 10.1016/j.compstruct.2021.114817

M3 - Journal article

AN - SCOPUS:85118842494

SN - 0263-8223

VL - 280

JO - Composite Structures

JF - Composite Structures

M1 - 114817

ER -

Innovative additional aluminum alloy ribs anchorage for improving the bond reliability of pretensioned CFRP bar: A feasibility study

Abstract

Keywords

ASJC Scopus subject areas

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