A comparison study on the natural and half-soaking galvanic accelerated corrosion of reinforced concrete based on an improved electrochemical model

Tian, Ye; Zhang, Guoyi; Jin, Xin; Jin, Nanguo; Ye, Hailong; Yan, Dongming; Tian, Zushi

doi:10.1016/j.conbuildmat.2020.120515

Cited by 8 publications

(3 citation statements)

References 66 publications

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“…The specimens that have not been damaged after two million times of fatigue loading are not shown in the figure. There is a linear degradation law for the actual stress level and the log of cycle numbers 35 . For the uncorroded specimen (F‐SC0), the bond fatigue failure occurred at fatigue cycle number of 113, 013 at the actual stress level of 73.5%.…”

Section: Discussionmentioning

confidence: 99%

“…The corrosion morphology of the rebar is almost the same as the natural corrosion under the same corrosion level. 35 It could be expected that loss of rib could lead to significant loss of bond strength as the mechanical interaction force is mainly provided by the rib.…”

Section: Surface Morphology Of Corroded Rebarsmentioning

confidence: 99%

“…There is a linear degradation law for the actual stress level and the log of cycle numbers. 35 For the uncorroded specimen (F-SC0), the bond fatigue failure occurred at fatigue cycle number of 113, 013 at the actual stress level of 73.5%. For corroded specimens, the bond fatigue failure occurred when the actual stress level exceeds 50%.…”

Section: Fatigue Lifementioning

confidence: 99%

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An experimental study on bond behaviors of reinforced concrete under fatigue loading and corrosion

Zhou

Lin

et al. 2022

Structural Concrete

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Corrosion and fatigue loading would inevitably degrade bond between rebar and concrete. However, there were only a few related test results available, and confinement of rebar was different from case to case. An experimental study was conducted to investigate the combined effects of corrosion and fatigue loading on bond behaviors between strong confined rebar and concrete.A total of 72 cube specimens with 13 target corrosion levels from 0% to 30% with a step of 2.5% were made and tested. Seven specimens were tested with monotonic pull-out load. Sixty-five specimens were tested with fatigue loads and divided into two groups according to corrosion level with two different loaded upper limits. Bond strength, corresponding slip value, residual slip value, and residual bond stress of tested specimens with different corrosion levels and stress levels are studied. Three typical failure modes were observed during fatigue loading processes: rebar fracture, bond fatigue failure, and pullout splitting failure, respectively. Test results indicated the residual slip continued to accumulate under fatigue load, and corrosion further increased the residual slip value. Specimens began to show bond fatigue failure when the actual stress level was >50%. The results of this study can provide reference for service life evaluation of reinforced concrete structures in coastal area under repeated loading.

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Section: Discussionmentioning

confidence: 99%

Section: Surface Morphology Of Corroded Rebarsmentioning

confidence: 99%