Influence of corrosion on the experimental behaviour of R.C. ties

Imperatore, Stefania; Rinaldi, Zila; Spagnuolo, Simone

doi:10.1016/j.engstruct.2019.109458

Cited by 24 publications

(13 citation statements)

References 29 publications

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“…The coefficient α is 1.0 for bare bars, and it ranges from 1.5 to 2.0 for embedded bars. 30 If the value α is assumed as 2.0, as shown in Figure 4, the measured and theoretical corrosion rates match well. Therefore, it is recommended that the coefficient (α) of 2.0 should be used in the modified Faraday's law when the current density of 1,000 μA/cm 2 is used to accelerate corrosion of reinforcing bars embedded in concrete.…”

Section: Accelerated Corrosion Test Resultsmentioning

confidence: 61%

“…The coefficient α is 1.0 for bare bars, and it ranges from 1.5 to 2.0 for embedded bars 30 . If the value α is assumed as 2.0, as shown in Figure 4, the measured and theoretical corrosion rates match well.…”

Section: Resultsmentioning

confidence: 70%

“…Meda et al 29 and Imperatore et al 30 reported that, when the current is introduced to the reinforcement embedded in concrete, the corrosion process would not start immediately because of the presence of concrete. Therefore, they introduced a coefficient ( α ) in the Faraday's law for reflecting the delay of corrosion process, as follows:

t = α \frac{italiczF normalΔ m}{MI} .

…”

Section: Resultsmentioning

confidence: 99%

“…19 Moreover, as mentioned in the previous section, the impressed current density (i corr = 1, 000 μA/cm 2 ) used in the accelerated corrosion test was considerably large, which led to a difference between the corrosion rate calculated from Faraday's law and the actual corrosion rate. Meda et al 29 and Imperatore et al 30 reported that, when the current is introduced to the reinforcement embedded in concrete, the corrosion process would not start immediately because of the presence of concrete. Therefore, they introduced a coefficient (α) in the Faraday's law for reflecting the delay of corrosion process, as follows:…”

Section: Shear Test Set-upmentioning

confidence: 99%

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Experimental shear tests of reinforced concrete beams with corroded longitudinal reinforcement

Han

Lee

et al. 2020

Structural Concrete

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In this study, shear tests were conducted to investigate the effect of corrosion damage induced in longitudinal reinforcement on the shear resistance mechanisms of reinforced concrete (RC) members without transverse reinforcement. A total of eight RC beam specimens were carefully designed and fabricated, and accelerated corrosion and typical shear tests were conducted considering various anchorage conditions and corrosion rates that were introduced in the longitudinal tension reinforcement as the key test variables. Test results showed that when the tensile reinforcement was not sufficiently anchored at the end regions of the RC members, the shear strengths of the test specimens decreased as the corrosion rate increased. In contrast, when the longitudinal reinforcement was properly anchored using the hook detail, the shear strengths showed a clear trend of increase, even when the longitudinal reinforcement was severely corroded.

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Section: Accelerated Corrosion Test Resultsmentioning

confidence: 61%

Section: Resultsmentioning

confidence: 70%

t = α \frac{italiczF normalΔ m}{MI} .

…”

Section: Resultsmentioning

confidence: 99%

Section: Shear Test Set-upmentioning

confidence: 99%

See 2 more Smart Citations

Experimental shear tests of reinforced concrete beams with corroded longitudinal reinforcement

Han

Lee

et al. 2020

Structural Concrete

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“…In order to avoid, in these first tests, the interaction between transversal and longitudinal reinforcement, and the related further uncertainties discussed above, no stirrups were placed in the specimens. Further details can be found in Reference . The electrochemical accelerated corrosion method was applied to accelerate the degradation process in order to obtain a theoretical corrosion level of 4% in terms of mass loss (Figure b,c).…”

Section: Influence Of the Corrosion On The Crack Width And Transmissimentioning

confidence: 99%

Experimental investigations on the effects of the steel rebar corrosion at structural level

Imperatore

Rinaldi

Spagnuolo

2019

Structural Concrete

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The paper presents some of the results obtained in the framework of a wide research program funded by the Italian Ministry of Instruction and Research, on the corrosion effects on existing structures. Both the aspects related to ultimate and serviceability states are analyzed. In particular, in the first case, the study is devoted to the definition of constitutive relationships of the steel rebars subjected to the corrosion. Many studies are available in literature on this topic, mainly with reference to the tensile behavior; the compressive one is generally neglected. The compressive and buckling behavior of corroded steel bar is discussed in this article with reference to experimental test results, and the importance of accounting for this peculiar aspect is motivated. Finally, with reference to serviceability states and based on tensile tests on reinforced concrete ties, the influence of corrosion on bond transfer length and crack pattern, due to low corrosion amount, not affecting the local and global strength, is clearly shown.

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Effect of Ceramic Waste Powder on Corrosion Resistance of Steel-Reinforced Concrete Beams

Fazlinezhad,

Eslami,

Mirabi Banadaki

et al. 2024

Iran J Sci Technol Trans Civ Eng

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Influence of corrosion on the experimental behaviour of R.C. ties

Cited by 24 publications

References 29 publications

Experimental shear tests of reinforced concrete beams with corroded longitudinal reinforcement

Experimental shear tests of reinforced concrete beams with corroded longitudinal reinforcement

Experimental investigations on the effects of the steel rebar corrosion at structural level

Effect of Ceramic Waste Powder on Corrosion Resistance of Steel-Reinforced Concrete Beams

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