Modeling influence of hysteretic moisture behavior on distribution of chlorides in concrete

Ožbolt, Joško; Oršanić, Filip; Balabanić, Gojko

doi:10.1016/j.cemconcomp.2016.01.004

Cited by 36 publications

(22 citation statements)

References 25 publications

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“…While an interesting phenomenon is observed in Figure 8b,c, chloride peaks appear in the surface part of some chloride profiles, which has been also found in numerous studies [39][40][41][42]. According to the research of Ye [43], Joško [44], and Chang [37,45], the effects of both capillary suction-moisture evaporation and carbonation during wetting and drying cycles dominate the formation of chloride peaks. The marine atmosphere zone is also a cyclic wetting-drying environment (rainwater or high humidity air make specimens wet, and sunshine or low humidity air makes them dry).…”

Section: Atmosphere Zone (1) Chloride Distributionsupporting

confidence: 71%

Durability and Aesthetics of Architectural Concrete under Chloride Attack or Carbonation

et al. 2020

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Architectural concrete has been wildly used nowadays, and those served in an offshore environment often suffer from chloride penetration and carbonation. To assess the protection and decoration performances of architectural concrete, this study exposed architectural concrete to actual marine environments and accelerated carbonation conditions. The chloride and carbonation resistance of architectural concrete was determined to evaluate the protection performance, and the corresponding surface-color-consistency was adopted to characterize its decoration performance. The results show that the total and free chloride of concrete in the marine atmosphere zone and the tidal zone generally decreases with depth; chloride content arguments significantly with exposure time, with a chloride maximum peak near the surface. Moreover, the chloride diffusion coefficient is small throughout the measurements, indicating the superior chloride resistance of architectural concrete. Furthermore, architectural concrete also possesses excellent carbonation resistance based on the carbonation depth data obtained from the carbonation experiment. Therefore, architecture concrete served as protection covers can withstand both the chloride attack and carbonation tested in this paper. In addition, carbonation was found to have a profound influence on the aesthetics of architectural concrete. Therefore, carbonation should be carefully handled for better maintaining the aesthetic appearance of architectural concrete in long-term service.

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Section: Atmosphere Zone (1) Chloride Distributionsupporting

confidence: 71%

Durability and Aesthetics of Architectural Concrete under Chloride Attack or Carbonation

et al. 2020

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“…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

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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.

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“…The transport of chloride ions in concrete matrix occurs through the pore network [45,46]. It is widely accepted that a considerable fraction of chloride ions are physically and chemically bound to the surrounding cementitious matrix [47].…”

Section: Chloride Binding In Concretementioning

confidence: 99%

Recent Advances on the Application of Layered Double Hydroxides in Concrete—A Review

et al. 2020

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The issue of chloride induced corrosion of reinforced concrete is a serious problem affecting infrastructure globally and causing huge economic losses. As such this issue has gained a considerable attention in the scientific community in the recent past. Layered Double Hydroxides (LDHs) have recently emerged as a new class of concrete-additives with a potential to increase the chloride resistance of concrete and mitigate corrosion. LDHs are clay like structures consisting of positively charged layers of cations with associated hydroxides and exchangeable anions in between the layers. Due to this charge balanced structure, LDHs possess the property of encapsulating an anion from the environment and replacing it with an exchangeable anion present in its layers. Potential applications include chloride entrapment in concrete and delivery of corrosion inhibiting anions. However, many versatile compositions of LDHs can be easily synthesized and their application as cement additives reach far beyond corrosion mitigation in concrete. This review presents a summary of recent advances on the applications of LDH in concrete. An extensive set of recently published literature has been critically reviewed and trends have been identified.

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Modeling influence of hysteretic moisture behavior on distribution of chlorides in concrete

Cited by 36 publications

References 25 publications

Durability and Aesthetics of Architectural Concrete under Chloride Attack or Carbonation

Durability and Aesthetics of Architectural Concrete under Chloride Attack or Carbonation

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

Recent Advances on the Application of Layered Double Hydroxides in Concrete—A Review

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