Structural performance of RC beams in relation with the corroded period in chloride environment

Zhu, Wenjun; François, Raoul

doi:10.1617/s11527-014-0270-2

Cited by 38 publications

(21 citation statements)

References 21 publications

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“…e ability of the adapted model to reproduce the behavior response of corroded RC and PC beams under transversal loads was validated by comparing the numerical results to the strength values obtained by means of failure tests performed on many specimens having different geometrical setup and subjected to corrosion, available in the literature [6][7][8]28].…”

Section: Validation Of the Theoretical Model With Experimental Resultsmentioning

confidence: 99%

“…In Figure 2, the geometry, reinforcement arrangement, and location of corrosion for the specimens tested by (a) Rodriguez et al [6], (b) El Maaddawy et al [7], (c) Zhu and François [8], and (d) Youn and Kim [14] are shown. e corroded reinforcement is highlighted with a brownish color and with a different thickness.…”

Section: Rc Corroded Specimensmentioning

confidence: 99%

“…By contrast, the beams loaded during corrosion exposure (CS) slightly increased the reductions in the yield load and in the ultimate, respectively [7]. [8] presented an experimental work to investigate the influence of chloride corrosion of the rebars on the residual structural performance of RC beams. A mechanical experiment was conducted with a three-point loading system on three uncorroded and four corroded beams that were exposed to a chloride environment for 14, 23, 26, and 28 years.…”

Section: El Maaddawy Et Almentioning

confidence: 99%

“…In detail, the beam B2Cl3 failed with considerable spalling and even delamination of the concrete cover at the tensile section in the middle of the specimen [8]. Table 3 summarizes the main results of tests, both in terms of yield/ultimate capacity and average attack penetration of tensile reinforcement.…”

Section: Zhu and François Zhu And Françoismentioning

confidence: 99%

“…An extensive literature on the structural behavior of corroded RC elements is available [6][7][8][9] and a series of mechanical models using the finite element method (FEM) was developed in order to simulate the effects of this degradation mechanism [10][11][12]. Some experimental researches and models were investigated and developed respectively also for PC structures [13][14][15], even if for PC structures a systematic study is still not available.…”

Section: Introductionmentioning

confidence: 99%

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A Model for the Analysis of Ultimate Capacity of RC and PC Corroded Beams

Recupero

Spinella

Tondolo

2018

Advances in Civil Engineering

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Corrosion of steel in reinforced and prestressed concrete beams is very common for structures and infrastructures. It can drastically reduce the resisting section of rebar, modify the mechanical response of the steel rebar, and also determine cracking of the surrounding concrete because of the volume expansion effect of rust. Moreover, it heavily influences the bond between steel rebar and concrete. Few experimental tests are available in the literature, where the structural behavior of reinforced and prestressed concrete beams, in presence of corrosion of longitudinal and transversal reinforcement, is analyzed. A reduction of the bearing performance is observed with an increasing level of rebar corrosion. Indeed, a changing collapse mechanism is evidenced through the tests and may be addressed to the not obvious consequences of corrosion. In this paper, a physical model based on a consistent equilibrium and ultimate strength theory is employed in order to explain the residual capacity of corroded beams. e model is based on limit analysis, and it is able to take into account the interaction between shear, bending moment, and axial forces.

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Section: Validation Of the Theoretical Model With Experimental Resultsmentioning

confidence: 99%

Section: Rc Corroded Specimensmentioning

confidence: 99%

Section: El Maaddawy Et Almentioning

confidence: 99%

Section: Zhu and François Zhu And Françoismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Model for the Analysis of Ultimate Capacity of RC and PC Corroded Beams

Recupero

Spinella

Tondolo

2018

Advances in Civil Engineering

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The combined effect of load and corrosion on the flexural performance of recycled aggregate concrete beams

Wang

2022

Structural Concrete

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To investigate the combined effect of load and steel corrosion on the flexural performance of recycled aggregate concrete beams, considering three types of aggregate replacement ratios (i.e., 0%, 50%, and 100%) and four levels of load (i.e., 0, 0.2, 0.4, and 0.6), 12 beams were designed for accelerated corrosion test and four-points bending test. The load was applied to beams by using a designed loading device before the accelerated corrosion test. After the accelerated corrosion test, four-point bending test was conducted to measure the flexural performance of beams. The results showed that, with the increase of load level applied to beams before accelerated corrosion test, the number of bending cracks on the bottom of corroded beams after four-points bending test decreased, while the average spacing of bending cracks increased. The effect of aggregate replacement ratio on the average spacing of bending cracks was more significant than that of steel corrosion. Yield moment capacity and ultimate moment capacity of corroded beams had a strong linear relationship with the maximum mass loss of

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Toward the definition of equivalent damage parameters for the assessment of corroded RC structures

Casprini

Passoni

Marini

et al. 2022

Structural Concrete

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The effects of reinforcement corrosion need to be included in the assessment of existing Reinforced Concrete structures for a reliable evaluation of the structural performances over time and a correct choice of the renovation strategy. The DEMSA protocol proposes straightforward tools available to professional engineers, enabling the calibration of equivalent damage parameters able to describe corrosion effects starting from environmental easy-measurable conditions. Guidance to implement the equivalent damage parameters describing corrosion effects at a sectional level in the structural analyses is provided. Then, a simplified approach to model the corrosion attack distribution along the bar length is proposed. Finally, nonlinear static analyses are carried out on reference RC frames subjected to different corrosion patterns by adopting fiber modeling technique, to show how the equivalent damage parameters allow detecting the impact of corrosion effects on the structural performances, in terms of internal actions distribution, reduction of stiffness, strength, and ductility.

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Structural performance of RC beams in relation with the corroded period in chloride environment

Cited by 38 publications

References 21 publications

A Model for the Analysis of Ultimate Capacity of RC and PC Corroded Beams

A Model for the Analysis of Ultimate Capacity of RC and PC Corroded Beams

The combined effect of load and corrosion on the flexural performance of recycled aggregate concrete beams

Toward the definition of equivalent damage parameters for the assessment of corroded RC structures

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