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Corrosion of Reinforced Concrete Structures in Civil Engineering and Architecture - Volume 2

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: closed (20 July 2023) | Viewed by 2171

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Dear Colleagues,

The status and future of societal evolution are dependent on decreasing the emission of greenhouse gases while increasing the service life of materials, as both of these actions will strongly and positively impact the global economy, environmental quality, and health. In an attempt to overcome limitations associated with the service life of materials, corrosion engineering know-how and research efforts are key for designing smart sustainable construction materials, thus guaranteeing corrosion resistance and structural integrity in civil engineering and architecture.

Advanced metal alloys in combination with novel cementitious materials have attracted much attention in the construction sector. New coating formulations and surface treatments are also being developed and used for protection against corrosion of reinforced concrete structures. In addition, current efforts focus on developing more reliable lifetime predictive models that combine mechanical and electrochemical processes while also considering corrosion initiation and propagation stages.

During the last few decades, different corrosion protection and management strategies have been implemented, such as cathodic protection, stainless steel reinforcements, corrosion inhibitors, smart coatings, cathodic protection, and new geopolymer cementitious materials. Furthermore, advanced electrochemical monitoring and characterization techniques are enabling a fundamental understanding of thermodynamics, reaction kinetics, and transport mechanisms governing corrosion phenomena of steel in concrete.

This Special Issue is gathering original research contributions and critical reviews that go beyond the current knowledge in corrosion and protection of reinforced concrete structures in civil engineering and architecture.

Dr. David M. Bastidas
Prof. Dr. Jose M. Bastidas
Guest Editors

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Keywords

corrosion
concrete
reinforcements
infrastructure
electrochemistry
inhibitors
coatings
geopolymers
cathodic protection
stress corrosion cracking
modeling and simulation

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22 pages, 8609 KiB

Open AccessArticle

Application of Interval Analysis to Assess Concrete Cover Degradation in Accelerated Corrosion Tests

by Faustyn Recha, Kseniya Yurkova and Tomasz Krykowski

Materials 2023, 16(17), 5845; https://doi.org/10.3390/ma16175845 - 26 Aug 2023

Cited by 1 | Viewed by 715

Abstract

This paper presents the application of interval algebra in affine formulation to assess damage propagation in test reinforced concrete elements subjected to accelerated corrosion of rebar, taking into account the uncertainty of parameters. Corrosion interactions were captured by introducing the interval tensor of [...] Read more.

\inf ({\dot{\bar{ε}}}^{V})

and

\sup ({\dot{\bar{ε}}}^{V})

) using the finite element method for locally and gradient-formulated concrete models with degradation, elastic, and elastic–plastic was conducted using ANSYS and ATENA software. Computer calculations were performed assuming a parameter uncertainty of 0, 10, and 20%. The results of the calculations were compared with the results of detailed tests of elements subjected to accelerated corrosion of reinforcement using an electrolyzer with full monitoring of the electrical parameters of the system. The obtained results of the calculations were verified using the Monte Carlo method, treating the model parameters as random variables with a uniform distribution. Full article

(This article belongs to the Special Issue Corrosion of Reinforced Concrete Structures in Civil Engineering and Architecture - Volume 2)

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16 pages, 3795 KiB

Open AccessArticle

Corrosion Behavior of Reinforcing Steel in the Immersed Tube Tunnel (ITT) under Submarine Environment

by Yu Yan, Haiwei Zhu, Zhihong Fan, Jiaqi Zhao and Shuping Jiang

Materials 2023, 16(9), 3300; https://doi.org/10.3390/ma16093300 - 22 Apr 2023

Viewed by 1074

Abstract

The corrosion behavior of reinforcing steel in the ITT under a submarine environment was investigated. Electrochemical tests were carried out to separately determine the linear polarization curves and the AC impedance spectra of rebars in the ITT scaled-down models subjected to pressurized seawater erosion, from which key parameters were obtained, including the self-corrosion potential (E_corr), corrosion current density (i_corr), polarization resistance (R_p), concrete resistance (R_c), and charge migration resistance (R_ct). The results show that in the process of pressurized seawater erosion, the rebars on the seawater side of the ITT models corroded earlier than the rebars on the cavity side, and it is recommended that anti-chloride ion penetration measures be taken on the surface of the seawater side as a priority in the project. The corrosion rate of rebars on the seawater side was significantly higher than that on the cavity side, and the corrosion rate of rebars on the cavity side increased as the erosion time increased. The corrosion rate of rebars in the ITT models was affected by chloride ions to a greater extent than by oxygen. Furthermore, by regression equation, a linear function between R_p obtained from the polarization curves and R_ct obtained from the AC impedance spectra was established. Full article

(This article belongs to the Special Issue Corrosion of Reinforced Concrete Structures in Civil Engineering and Architecture - Volume 2)

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