Corrosion-damaged reinforced concrete T-beams strengthened in shear with embedded through-section carbon fiber-reinforced polymer rods

Shunde Qin; Samir Dirar; Andrew Chan

Corrosion-damaged reinforced concrete T-beams strengthened in shear with embedded through-section carbon fiber-reinforced polymer rods

Shunde Qin, Samir Dirar, Andrew Chan

Civil Engineering

Research output: Contribution to conference (unpublished) › Paper › peer-review

Abstract

This paper presents results of an experimental investigation on un-corroded as well as corroded reinforced concrete (RC) T-beams strengthened in shear with embedded carbon fiber-reinforced polymer (CFRP) rods. It examines the effect of corrosion of internal steel stirrups and strengthening with embedded CFRP bars on the shear behaviour of the tested beams. Numerical predictions suggest that internal steel stirrups with about 11% corrosion level reduced the shear strength by at least 4.5%. The embedded CFRP rods enhanced the shear force capacity of the corroded beam by at least 5.4%. Neither the corroded steel stirrups nor the embedded CFRP rods had significant effect on the stiffness of the beams. However, the strengthened beams had narrower, more distributed cracks compared to the corresponding unstrengthened beams.

Original language	English
Number of pages	10
Publication status	Published - Feb 2014
Event	4th International fib Congress - Mumbai, India Duration: 10 Feb 2014 → 13 Feb 2014

Conference

Conference	4th International fib Congress
Country/Territory	India
City	Mumbai
Period	10/02/14 → 13/02/14

1 Article

Effect of transverse and longitudinal reinforcement ratios on the behaviour of RC T-beams shear-strengthened with embedded FRP bars
Sogut, K., Dirar, S., Theofanous, M., Faramarzi, A. & Nayak, A. N., 15 Apr 2021, In: Composite Structures. 262, 113622.
Research output: Contribution to journal › Article › peer-review

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title = "Corrosion-damaged reinforced concrete T-beams strengthened in shear with embedded through-section carbon fiber-reinforced polymer rods",

abstract = "This paper presents results of an experimental investigation on un-corroded as well as corroded reinforced concrete (RC) T-beams strengthened in shear with embedded carbon fiber-reinforced polymer (CFRP) rods. It examines the effect of corrosion of internal steel stirrups and strengthening with embedded CFRP bars on the shear behaviour of the tested beams. Numerical predictions suggest that internal steel stirrups with about 11% corrosion level reduced the shear strength by at least 4.5%. The embedded CFRP rods enhanced the shear force capacity of the corroded beam by at least 5.4%. Neither the corroded steel stirrups nor the embedded CFRP rods had significant effect on the stiffness of the beams. However, the strengthened beams had narrower, more distributed cracks compared to the corresponding unstrengthened beams. ",

author = "Shunde Qin and Samir Dirar and Andrew Chan",

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language = "English",

note = "4th International fib Congress ; Conference date: 10-02-2014 Through 13-02-2014",

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T1 - Corrosion-damaged reinforced concrete T-beams strengthened in shear with embedded through-section carbon fiber-reinforced polymer rods

AU - Qin, Shunde

AU - Dirar, Samir

AU - Chan, Andrew

PY - 2014/2

Y1 - 2014/2

N2 - This paper presents results of an experimental investigation on un-corroded as well as corroded reinforced concrete (RC) T-beams strengthened in shear with embedded carbon fiber-reinforced polymer (CFRP) rods. It examines the effect of corrosion of internal steel stirrups and strengthening with embedded CFRP bars on the shear behaviour of the tested beams. Numerical predictions suggest that internal steel stirrups with about 11% corrosion level reduced the shear strength by at least 4.5%. The embedded CFRP rods enhanced the shear force capacity of the corroded beam by at least 5.4%. Neither the corroded steel stirrups nor the embedded CFRP rods had significant effect on the stiffness of the beams. However, the strengthened beams had narrower, more distributed cracks compared to the corresponding unstrengthened beams.

AB - This paper presents results of an experimental investigation on un-corroded as well as corroded reinforced concrete (RC) T-beams strengthened in shear with embedded carbon fiber-reinforced polymer (CFRP) rods. It examines the effect of corrosion of internal steel stirrups and strengthening with embedded CFRP bars on the shear behaviour of the tested beams. Numerical predictions suggest that internal steel stirrups with about 11% corrosion level reduced the shear strength by at least 4.5%. The embedded CFRP rods enhanced the shear force capacity of the corroded beam by at least 5.4%. Neither the corroded steel stirrups nor the embedded CFRP rods had significant effect on the stiffness of the beams. However, the strengthened beams had narrower, more distributed cracks compared to the corresponding unstrengthened beams.

M3 - Paper

T2 - 4th International fib Congress

Y2 - 10 February 2014 through 13 February 2014

ER -

Corrosion-damaged reinforced concrete T-beams strengthened in shear with embedded through-section carbon fiber-reinforced polymer rods

Abstract

Conference

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Research output

Effect of transverse and longitudinal reinforcement ratios on the behaviour of RC T-beams shear-strengthened with embedded FRP bars

Cite this