Effect of corrosion on bond in reinforced concrete under cyclic loading

Fang, Chao; Gylltoft, Kent; Lundgren, Karin; Plos, Mario

doi:10.1016/j.cemconres.2005.11.019

Cited by 86 publications

(33 citation statements)

References 16 publications

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“…Similar setup has been adopted by several researchers. 4,8,11,13 To establish different corrosion levels for rebar and stirrups, rough predictions of the level of corrosion was estimated according to the weight loss of the rebar and stirrup. The theoretically calculated amount of corrosion products, in terms of the duration of electrolytic time, can be expressed by the following Faraday's law…”

Section: Accelerated Corrosionmentioning

confidence: 99%

“…12 However, little information is available for the effects of stirrup corrosion on the cyclic bond performance. Furthermore, most of the reported literatures are mainly focused on the ultimate bond strength by displacement controlled loading, 11,13 and little information is known about dynamic bond performance under force controlled loading. The cyclic controlled force loading corresponds to cyclic service loading, such as fluctuation wind load, repeated running vehicle load, and so on.…”

Section: Introductionmentioning

confidence: 99%

“…5,8 Bond performance is primarily dependent on three factors: concrete compressive strength, confinement, and surface of the rebar (deformed or round). 9,10 Recent research about the cyclic bond performance for corroded round and deformed rebar with and without confinement 11 showed different performances as stirrup confinement changed. It should be noted that stirrup is more vulnerable to marine environment corrosion than rebar as the concrete cover is thinner for stirrup.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of bond-slip performance of corroded reinforced concrete under cyclic loading

Zhou

et al. 2015

Advances in Mechanical Engineering

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Reinforced concrete structures exposed to marine environment often sustain high levels of chloride-induced reinforcement corrosion, which causes reinforcement corrosion and resulting in degraded performance under cyclic service loading. This article studied the dynamic bond performance between corroded reinforcing and concrete under force controlled loading. Tests were carried out to evaluate the cyclic bond-slip degradation with different reinforcement corrosion levels. A series of 30 specimens with various corrosion levels of rebar and stirrup were made. The specimen was cast as concrete cube with the dimension of 200 mm, and a steel rebar was centrally embedded with two stirrups around. The embedded steel rebar and stirrups were corroded using an electrochemical accelerated corrosion technique. The corrosion crack opening width and length were recorded after completion of artificial corrosion. Then, cyclic loading test was carried out; three different force levels of 24, 36, and 48 kN were adopted. The effects of reinforcement corrosion rate on crack opening, maximum slip, energy dissipation, and unloading stiffness were discussed in detail. It was found that both reinforcement corrosion rate and crack opening would have significant effects on cyclic bond performance. Further studies are urgently needed to quantify these effects to the cyclic bond performance.

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Section: Accelerated Corrosionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental study of bond-slip performance of corroded reinforced concrete under cyclic loading

Zhou

et al. 2015

Advances in Mechanical Engineering

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“…Bonding behaviors primarily dependent on three factors: the compressive strength of concrete, confinement, and the surface of the rebar (deformed or round) (Wu & Zhao, 2013). Previous studies have been undertaken to evaluate the effects of corrosion on the bond strength (Almusallam, Al-Gahtani, Aziz, & Rasheeduzzafar 1996;Bhargava, Ghosh, Mori, & Ramanjam, 2008;Eligehausen, Popov, & Bertero, 1983;Fang, Gylltoft, Lundgren, & Plos, 2006;Fang, Lundgren, Chen, & Zhu, 2004;Kivell, 2012;Mangat & Elgarf, 1999;Yalciner, Eren, & Sensoy, 2012). However, little information is available on the effects of concrete strength on bond performance of reinforcing steel in concrete.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Effect of Steel Corrosion on the Bond–Slip Performance of Reinforced Concrete

Zhang¹,

Liang²,

Han-cheng³

et al. 2016

Proceedings of the 5th International Conference on the Durability of Concrete Structures

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This paper studied the effects of reinforcement corrosion on bond performance between rebar and concrete. Tests were carried out to evaluate the degradation of bond between reinforcing steel and concrete for different corrosion levels of reinforcing steel. A series of 20 specimens of different concrete strength with various reinforcing steel corrosion levels were designed and manufactured. Each specimen was casted as a 200-mm concrete cube, and a steel rebar was centrally embedded with two stirrups around it. The steel rebar were corroded using an electrochemical accelerated corrosion technique. The corrosion crack opening width and length were recorded after the corrosion process. Then, monolithic pull-out loading tests were carried out on the specimens. The effects of reinforcement corrosion on crack opening, maximum bond stress, and energy dissipation were discussed in detail. It was found that reinforcement corrosion has non-negligible effects on bond performance of reinforcing bar in concrete.

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“…The well developed bond in corrugated steel showed lesser corrosion potential than plain steel due to effective bonding with concrete. It is also understood that the increase in corrosion thickness causes a reduction in the bond strength at the interface of concrete and steel [11][12][13]. Research studies in the past showed minimization of chloride transport and can lead to changes in the corrosion rate of steel in cement-based materials, such as concrete.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Measurements in Reinforced Fly Ash Concrete Containing Steel Fibres Using Strain Gauge Technique

Sounthararajan

Sivakumar

2013

International Journal of Corrosion

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Corrosion of steel bars in concrete is a serious problem leading to phenomenal volume expansion and thereby leading to cover concrete spalling. It is well known that the reinforced concrete structures subjected to chloride attack during its service life cause these detrimental effects. The early detection of this damage potential can extend the service life of concrete. This study reports the comprehensive experimental studies conducted on the identification of corrosion mechanism in different types of reinforced concrete containing class-F fly ash and hooked steel fibres. Fly ash replaced concrete mixes were prepared with 25% and 50% fly ash containing steel fibres at 0.5%, 1.0%, and 1.5% by volume fraction. Corrosion process was investigated in an embedded steel bar (8 mm diameter) reinforced in concrete by passing an impressed current in sodium chloride solution. Strain gauge attached to the rebars was monitored for electrical measurements using strain conditioner. Strain gauge readings observed during the corrosion process exhibited the volume changes of the reinforcement embedded inside the concrete. The corrosion potential of different steel fibre reinforced concrete mixes with fly ash addition showed higher resistance towards the corrosion initiation.

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Effect of corrosion on bond in reinforced concrete under cyclic loading

Cited by 86 publications

References 16 publications

Experimental study of bond-slip performance of corroded reinforced concrete under cyclic loading

Experimental study of bond-slip performance of corroded reinforced concrete under cyclic loading

An Experimental Study on Effect of Steel Corrosion on the Bond–Slip Performance of Reinforced Concrete

Corrosion Measurements in Reinforced Fly Ash Concrete Containing Steel Fibres Using Strain Gauge Technique

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