Influence of Longitudinal Bar Corrosion on Shear Behavior of RC Beams

Xue, Xiongzhi; Seki, Hiroshi

doi:10.3151/jact.8.145

Cited by 40 publications

(16 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several researchers have studied the strength and shear capacity of RC beams with only the stirrups corroded Juarez, Guevara, Fajardo, and Castro-Borges (2011), Higgins and Farrow (2006), Suffern, El-Sayed, and Soudki (2010) or with only corrosion or complete loss of bond of the longitudinal steel bars or corroded longitudinal steel bars Cairns and Zhao (1993), Jeppsson and Thelandersson (2003) Xue and Seki (2010). Others have published the shear strength of RC beams with corroded longitudinal steel and stirrups Wang, Gao, Li, and Deng (2011), Rodriguez, Ortega, and Casal (1997), Xia, Jin, and Li (2011), which represents the actual corrosion in real structures.…”

Section: Introductionmentioning

confidence: 97%

Shear behaviour and load capacity of short reinforced concrete beams exposed to chloride environment

Dang

François

Coronelli

2015

European Journal of Environmental and Civil Engineering

View full text Add to dashboard Cite

The effect of corrosion of reinforcement on the behaviour of deep, reinforced concrete beams was investigated. Long-term corrosion (27 years) in an accelerated climate process using a chloride environment close to natural corrosion resulted in a high level of heterogeneous loss of cross section on both longitudinal reinforcement and transversal reinforcement (stirrups). Control beams of the same age kept in a non-aggressive environment were also tested as controls. Tension reinforcement did not have special anchorage since the rebars had straight edges. For deep beams, the behaviour during bending tests involved a combination of arch action and beam action, which could be affected by corrosion in different ways, such as anchoring capacity, stirrup corrosion and resulting transversal cracks and loss of cross section in the tension reinforcement. Nevertheless, and despite the high corrosion level of the steel bars, the ultimate capacity of deep beams was only slightly decreased. The changes in load transfer mechanism and failure mode could explain these results.

show abstract

Section: Introductionmentioning

confidence: 97%

Shear behaviour and load capacity of short reinforced concrete beams exposed to chloride environment

Dang

François

Coronelli

2015

European Journal of Environmental and Civil Engineering

View full text Add to dashboard Cite

show abstract

“…A number of studies (Azam, Soudki 2013, 2012Xue, Seki 2010;Toongeonthong, Meakawa 2004;Satoh et al 2003;Cairns 1995;Raoof, Lin 1997) have been reported in the literature on effect of corrosion on behaviour of RC beams without stirrups. However, these studies assumed proper anchorage of the reinforcement but there may be conditions in service when anchorage is also impaired due to corrosion.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of Reinforced Concrete Beams Without Stirrups Subjected to Steel Reinforcement Corrosion

Azam

El-Sayed

Soudki

2016

Journal of Civil Engineering and Management

View full text Add to dashboard Cite

The effect of corrosion on the structural behaviour of reinforced concrete (RC) beams without stirrups was experimentally investigated. A total of seven medium-scale RC beams without stirrups were constructed. The beams measured 150 mm wide, 250 mm deep and 1700 mm long. The test variables included: three different longitudinal reinforcement ratios (0.91%, 1.21%, and 1.82%) and two different corrosion levels (3% and 10%). Four beams were subjected to artificial corrosion whereas three beams acted as control un-corroded. Following the corrosion phase, all beams were tested to failure in three point bending. Corrosion crack widths and cracking patterns were recorded at different stages of corrosion. The effect of different longitudinal reinforcement ratios on the rate of corrosion was observed. Test results revealed that the beams with higher reinforcement ratios experienced slower corrosion rate compared to beams with lower reinforcement ratios. All control beams failed in shear whereas corroded beams failed in bond. There was a significant reduction in the load carrying capacity of the corroded beams without stirrups compared to the control beams.

show abstract

“…The shear failure was brittle, which would seriously affect the safety of concrete beams (Rodriguez et al 1997). The loss of cross-sectional area would cause a reduction in shear resistance carried by stirrups (Farrow and Higgins 2006;Matsuo et al 2004;Xue and Seki 2010). However, the effects of corrosion on structural deterioration were only reviewed and not investigated sufficiently, and thus further research about it should continue to be conducted.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Shear Behavior of RC Beams with Corroded Stirrups

Zhang

et al. 2017

ACT

View full text Add to dashboard Cite

The shear behavior of corroded reinforced concrete (RC) members is an urgent problem to be solved. The study carried out an experimental program on the shear behavior of 21 beams, which included 3 un-corroded RC beams and 18 corroded ones. Both shear span-to-depth ratio and corrosion degree influencing the shear strength as well as failure patterns were discussed in detail. This paper aims to contribute to a better understanding about the effect of corrosion on the shear behavior of corroded RC beams. The test results show that corrosion of stirrups reduces the aggregate interlock capacity of concrete, also the ductility and shear strength of the flexural members. In shear-compression zone, cracks caused by corrosion of stirrup have a predominant influence on shear strength; Failure modes of RC beams depend largely on shear span-to-depth ratio and are little affected by corrosion of stirrups. Based on the results of experiments and the limit equilibrium theory, the calculation model of shear capacity for corroded simply supported RC beams is proposed, which has a simple form and clearly physical conception.

show abstract

Influence of Longitudinal Bar Corrosion on Shear Behavior of RC Beams

Cited by 40 publications

References 5 publications

Shear behaviour and load capacity of short reinforced concrete beams exposed to chloride environment

Shear behaviour and load capacity of short reinforced concrete beams exposed to chloride environment

Behaviour of Reinforced Concrete Beams Without Stirrups Subjected to Steel Reinforcement Corrosion

Experimental Study on the Shear Behavior of RC Beams with Corroded Stirrups

Contact Info

Product

Resources

About