Modelling processes related to corrosion of reinforcement in concrete: coupled 3D finite element model

Ožbolt, Joško; Oršanić, Filip; Balabanić, Gojko

doi:10.1080/15732479.2016.1198400

Cited by 38 publications

(11 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The latest developments include advanced models for the interaction between mechanical and non-mechanical effects of corrosion, cf. Ožbolt et al [27]. In this paper, the assessment of anchorage has been carried out according to assessment level II.…”

Section: Different Levels Of Assessmentmentioning

confidence: 99%

Engineering bond model for corroded reinforcement

Blomfors

Zandi

Lundgren

et al. 2018

Engineering Structures

View full text Add to dashboard Cite

Corrosion of the reinforcement in concrete structures affects their structural capacity. This problem affects many existing concrete bridges and climate change is expected to worsen the situation in future. At the same time, assessment engineers lack simple and reliable calculation methods for assessing the structural capacity of structures damaged by corrosion. This paper further develops an existing model for assessing the anchorage capacity of corroded reinforcement. The new version is based on the local bond stress-slip relationships from fib Model Code 2010 and has been modified to account for corrosion. The model is verified against a database containing the results from nearly 500 bond tests and by comparison with an empirical model from the literature. The results show that the inherent scatter among bond tests is large, even within groups of similar confinement and corrosion level. Nevertheless, the assessment model that has been developed can represent the degradation of anchorage capacity due to corrosion reasonably well. This new development of the model is shown to represent the experimental data better than the previous version; it yields similar results to an empirical model in the literature. In contrast to many empirical models, the model developed here represents physical behaviour and shows the full local bond stress-slip relationship. Using this assessment model will increase the ability of professional engineers to estimate the anchorage capacity of corroded concrete structures.

show abstract

Section: Different Levels Of Assessmentmentioning

confidence: 99%

Engineering bond model for corroded reinforcement

Blomfors

Zandi

Lundgren

et al. 2018

Engineering Structures

View full text Add to dashboard Cite

show abstract

“…Presented NDT results will be applied for the realistic simulation of processes before and after depassivation of reinforcement in concrete using the 3D chemo-hygro-thero-mechanical (CHTM) model [82,[84][85][86][87][88][89][90]. The coupled 3D CHTM is one of the most comprehensive models for service life prediction.…”

Section: Application Of Ndt Results In Service Life Predictionmentioning

confidence: 99%

Assessment of reinforcement corrosion and concrete damage on bridges using non-destructive testing

2019

JCE

View full text Add to dashboard Cite

Assessment of reinforcement corrosion and concrete damage on bridges using non-destructive testing Management of bridges in Croatia and their vulnerability to reinforcement corrosion is discussed in the paper. New maintenance approach, where visual inspections are combined with the non-destructive testing methods, is proposed and demonstrated on six representative bridges. Using this methodology, reinforcement corrosion on structural elements may be detected earlier and more precisely. Obtained results as well as correlations between different measured parameters are important input parameters for prediction of future degradation of structures and decision making for future maintenance activity.

show abstract

“…Studies in the literature of Zhu X. J. et al [6] have shown that the life of concrete structures under the combined action of carbonation and chloride ions has been reduced by nearly 20 years. In 2004, Germany spent about 300 million euros on highway maintenance and repairs, of which 40% was used to repair concrete bridge damage caused by chloride salt corrosion and steel bar corrosion [7]. The annual cost of corrosion in China since 2014 has been approximately 3.34% of GDP [8].…”

Section: Introductionmentioning

confidence: 99%

Diffusion Behavior of Chloride Ions in Concrete Box Girder under the Influence of Load and Carbonation

Ying-long

Lin

2020

Materials

View full text Add to dashboard Cite

In order to study the durability degradation characteristics of concrete box girder under load and carbonation and chloride ion erosion, a scale model of concrete box girder was made for experimental research. According to the test results, the diffusion characteristics of chloride ions in the concrete box girder under the coupling effect of load and carbon dioxide were analyzed. By revising the calculation formula of the existing chloride ion concentration considering multiple factors, a calculation model of chloride ion concentration considering the influence of carbonation was proposed, and the test results were verified. The results show that the chloride concentration of the box girder on the same cross section is non-uniformly distributed due to the shear lag effect and the spatial structure. After considering the effect of carbonation, the difference rate of the improved model proposed in this paper is generally within 10%. Compared with the original model, the difference rate is reduced by a maximum of 19%.

show abstract

Modelling processes related to corrosion of reinforcement in concrete: coupled 3D finite element model

Cited by 38 publications

References 21 publications

Engineering bond model for corroded reinforcement

Engineering bond model for corroded reinforcement

Assessment of reinforcement corrosion and concrete damage on bridges using non-destructive testing

Diffusion Behavior of Chloride Ions in Concrete Box Girder under the Influence of Load and Carbonation

Contact Info

Product

Resources

About