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67128

BEHAVIOR AND DESIGN ASPECTS OF CONCRETE BEAMS REINFORCED WITH HYBRID STEEL-GFRP BARS

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Last updated: 25 Dec 2024

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Abstract

This paper aims at investigating the structural behavior of simply supported concrete beams reinforced with hybrid reinforcement consisting of steel and glass fiber reinforced polymer (GFRP) bars. The proposed system utilizes the merits of ductility and stiffness provided by the steel reinforcement and the anticorrosion characteristics of GFRP. While, the steel bars were provided with an increased concrete cover to ensure extra protection against corrosion, the GFRP bars were laid near the bottom tension surface of test beams to control cracking. Different parameters influencing the structural behavior including the steel and the GFRP reinforcement ratios and the configuration of shear reinforcement were considered. The steel stirrups were used to confine only the elevated steel bars or to confine both the steel and the GFRP bars. A total of twelve beams were tested in flexure under four-point loading till failure. The load-deflection response, the cracking patterns and the failure modes were recorded. A design equation was proposed to predict the ultimate load of the hybrid test beams. The test results showed that the performance of the proposed system was successful in maintaining the flexure strength with adequate stiffness and improved the cracking characteristics compared to counterpart beams with conventional reinforcement.

DOI

10.21608/erjm.2012.67128

Keywords

hybrid reinforcement, GFRP, Durability, Corrosion, deflection, Cracking

Authors

First Name

Mohamed A.

Last Name

Safan

MiddleName

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Affiliation

Civil Engineering Department, Faculty of Engineering, Minoufiya University, Egypt

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Volume

35

Article Issue

2

Related Issue

10135

Issue Date

2012-04-01

Receive Date

2019-12-31

Publish Date

2012-04-01

Page Start

139

Page End

147

Print ISSN

1110-1180

Online ISSN

3009-6944

Link

https://erjm.journals.ekb.eg/article_67128.html

Detail API

https://erjm.journals.ekb.eg/service?article_code=67128

Order

7

Type

Original Article

Type Code

1,118

Publication Type

Journal

Publication Title

ERJ. Engineering Research Journal

Publication Link

https://erjm.journals.ekb.eg/

MainTitle

BEHAVIOR AND DESIGN ASPECTS OF CONCRETE BEAMS REINFORCED WITH HYBRID STEEL-GFRP BARS

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Article

Created At

22 Jan 2023