An experimental study on the bond strength between reinforcement bars and concrete as a function of concrete cover, strength and corrosion level

Yalçıner, Hakan; Eren, Özgür; Şensoy, Serhan

doi:10.1016/j.cemconres.2012.01.003

Cited by 230 publications

(86 citation statements)

References 7 publications

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“…It is noted that mainly accelerated corrosion [7,[30][31][32][33][34] has been widely used for previous research purposes by different researchers, although it does not give the fully real behaviour, compared to natural corrosion. The current density applied to accelerated corrosion tests may significantly affect the bond strength [9].…”

Section: Accelerated Corrosion Process/artificial Corrosion Processmentioning

confidence: 99%

“…This process can be established by many methods, for instance, by full or partial immersion in salt water or by both sodium chloride being added to the concrete mixture and then samples being immersed in sodium chloride liquid, in order to accelerate the corrosion process in both ways [7]. The direct current or voltage used to accelerate the process is decided by considering the value closest to the natural corrosion process.…”

Section: Accelerated Corrosion Process/artificial Corrosion Processmentioning

confidence: 99%

“…Finally, this causes changes in the overall stiffness of the structure, and a reduction in load carrying capacity can be observed. Several researchers have studied the relevant corrosion mechanisms and the corresponding structural behaviour of deteriorated reinforced concrete structures [6,7]. They pay significant attention to the accurate modelling of the bond strength and the corresponding mechanisms of corroded reinforced concrete structures.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion propagation phase and bond strength degradation of reinforced concrete structures: State of the art

Adasooriya¹,

Samarakoon²,

Gudmestad³

2017

Int. J. CMEM

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Corrosion causes damage to reinforcing steel in concrete structures and governs the service life of the structures. Currently, researchers are paying attention to modelling the behaviour of the bond between the concrete and steel interface of corroded reinforcement. The main objective of this paper is to study the recent research relevant to the bond behaviour at the interface between corroded ribbed bars and concrete and to identify the future research focus. Initially, the paper presents the mechanisms of corrosion damage of reinforced concrete by discussing corrosive agents, causes and effects. Then mechanisms of corrosion prorogation, mechanical properties of corroded reinforcing steel and effects of corrosion on bond degradation of reinforced concrete are discussed in details. Thereafter, recent experimental researches on bond degradation between reinforcement and concrete are reviewed. Previous studies have proposed formulae, which depend on cover, reinforcing bar diameter, concrete strength and corrosion level, to predict the ultimate bond strength. Effect of other parameters (i.e. type of the bars, bar spacing, crack size, aggregate size, type of loading, stress state and etc.) on bond strength have not been properly studied in literature. Bond strength against biaxial bending or combined load action has not been investigated. Finally, the paper concludes with the significance of testing naturally corroded test specimens, compared to the artificially corroded specimens, as well as discussing loading situations.

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Section: Accelerated Corrosion Process/artificial Corrosion Processmentioning

confidence: 99%

Section: Accelerated Corrosion Process/artificial Corrosion Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion propagation phase and bond strength degradation of reinforced concrete structures: State of the art

Adasooriya¹,

Samarakoon²,

Gudmestad³

2017

Int. J. CMEM

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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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“…Earlier studies found that there existed a limit corrosion rate (mostly smaller than 5% reduction in bar cross section), and corrosion might have a beneficial effect on bond in deformed bars under this limit. [4][5][6][7] At corrosion levels above this limit, the bond capacity dropped off significantly. 5,8 Bond performance is primarily dependent on three factors: concrete compressive strength, confinement, and surface of the rebar (deformed or round).…”

Section: Introductionmentioning

confidence: 99%

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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An experimental study on the bond strength between reinforcement bars and concrete as a function of concrete cover, strength and corrosion level

Cited by 230 publications

References 7 publications

Corrosion propagation phase and bond strength degradation of reinforced concrete structures: State of the art

Corrosion propagation phase and bond strength degradation of reinforced concrete structures: State of the art

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

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

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