Evaluation of Bond Properties of Reinforced Concrete with Corroded Reinforcement by Uniaxial Tension Testing

Kim, Hyung-Rae; Choi, Wonchang; Sangchun, Yoon; Noguchi, Takafumi

doi:10.1007/s40069-016-0152-9

Cited by 15 publications

(6 citation statements)

References 9 publications

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“…Consequently the tension‐stiffening of the corroded reinforced concrete element, being affected by both the variation of the bond‐slip law, and by the crack pattern on the element due to the degradation, is influenced by the corrosion phenomenon, also for low corrosion levels. Unfortunately, few studies are present in the scientific literature on this topic, and the available ones refer to small specimens characterized by a maximum length between 500 and 1,000 mm . In this case, the transfer length can become comparable to the length of the corroded specimen and consequently the crack pattern is influenced by the dimension of the element itself and cannot be representative of the actual behavior.…”

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

confidence: 91%

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

confidence: 91%

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

Imperatore

Rinaldi

Spagnuolo

2019

Structural Concrete

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“…Designing and maintaining these systems for a particular service lifetime have been recognized as critical issues worldwide. RC structures are characterized by high durability; however, during their operational life, they are subjected to internal and external actions that affect performance, serviceability and safety (Imam et al 2015;Kim et al 2016;Marquez-Peñaranda et al 2016;Morga and Marano 2015;Sánchez-Silva and Klutke 2016). Nowadays, many deteriorated structures are evaluated for possible repair and continued service because their replacement would be economically unfeasible.…”

Section: Introductionmentioning

confidence: 99%

Reliability of Reinforced Concrete Structures Subjected to Corrosion-Fatigue and Climate Change

Bastidas‐Arteaga

2018

Int J Concr Struct Mater

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Durability of reinforced concrete (RC) structures is affected by certain environmental conditions and operational actions which can reduce their lifetime significantly. Among these actions, this paper proposes a stochastic model that accounts for the combined effects of chloride-induced corrosion, climate change and cyclic loading. Separately, corrosion leads to cross-section reduction, climate change produces changes in temperature and humidity and fatigue induces nucleation and propagation of cracks in the rebars. When considered together, pitting corrosion nucleates cracks while environmental factors affect the kinematics of chloride ingress and corrosion propagation. The proposed approach is illustrated with the reliability analysis of a bridge girder subjected to cyclic loading under various environmental conditions. The overall results indicate that climate change effect induces lifetime reductions ranging between 1.4 and 2.3% if fatigue load is neglected. Under cyclic loading, total lifetime reduction increases up to 7%.

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“…Chloride ingress is among the principal causes of deterioration of reinforced concrete (RC) structures in chloridecontaminated environments leading to important serviceability and safety reductions as well as increasing repair and maintenance costs Schoefs 2012, 2015;Imam et al 2015;Kim et al 2016). For example, about 173,000 bridges on the interstate system of the United States are structurally deficient or functionally obsolete due in part to corrosion (Bhide 2008;Pritzl et al 2014;Radlińska et al 2014).…”

Section: Introductionmentioning

confidence: 99%

An Efficient Chloride Ingress Model for Long-Term Lifetime Assessment of Reinforced Concrete Structures Under Realistic Climate and Exposure Conditions

Nguyen

Bastidas‐Arteaga

Amiri

et al. 2017

Int J Concr Struct Mater

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Chloride penetration is among the main causes of corrosion initiation in reinforced concrete (RC) structures producing premature degradations. Weather and exposure conditions directly affect chloride ingress mechanisms and therefore the operational service life and safety of RC structures. Consequently, comprehensive chloride ingress models are useful tools to estimate corrosion initiation risks and minimize maintenance costs for RC structures placed under chloride-contaminated environments. This paper first presents a coupled thermo-hydro-chemical model for predicting chloride penetration into concrete that accounts for realistic weather conditions. This complete numerical model takes into account multiple factors affecting chloride ingress such as diffusion, convection, chloride binding, ionic interaction, and concrete aging. Since the complete model could be computationally expensive for long-term assessment, this study also proposes model simplifications in order to reduce the computational cost. Long-term chloride assessments of complete and reduced models are compared for three locations in France (Brest, Strasbourg and Nice) characterized by different weather and exposure conditions (tidal zone, de-icing salts and salt spray). The comparative study indicates that the reduced model is computationally efficient and accurate for long-term chloride ingress modeling in comparison to the complete one. Given that long-term assessment requires larger climate databases, this research also studies how climate models may affect chloride ingress assessment. The results indicate that the selection of climate models as well as the considered training periods introduce significant errors for mid-and long-term chloride ingress assessment.

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Evaluation of Bond Properties of Reinforced Concrete with Corroded Reinforcement by Uniaxial Tension Testing

Cited by 15 publications

References 9 publications

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

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

Reliability of Reinforced Concrete Structures Subjected to Corrosion-Fatigue and Climate Change

An Efficient Chloride Ingress Model for Long-Term Lifetime Assessment of Reinforced Concrete Structures Under Realistic Climate and Exposure Conditions

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