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Concrete Durability: Deterioration Mechanisms, Prediction and Rehabilitation (2nd Edition)
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Concrete Durability: Deterioration Mechanisms, Prediction and Rehabilitation (2nd Edition)

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

Deadline for manuscript submissions: closed (20 June 2024) | Viewed by 2538

Special Issue Editor

Prof. Dr. Qingfeng Liu

E-Mail Website
Guest Editor
State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: concrete durability; civil engineering materials; structural engineering; computational materials science; deterioration mechanism of concrete; transport in porous media; microstructures of cementitious materials; numerical modelling; electrochemical rehabilitation; sustainable construction materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Concrete is the most widely used man-made material in the modern construction industry. However, the service life of concrete constructions has been seriously shortened due to various durability problems, particularly when serving in non-ideal environment and subjected to internal/external attacks, such as chloride penetration, rebar corrosion, carbonation, freeze-thaw, alkali aggregate reactions, sulphate attack, calcium leaching, creep and fatigue damage, etc. The durability properties are difficult to predict or control due to the heterogeneous natures and complex microstructures of cement-based materials. Therefore, it is extremely significant to better understand the mechanisms during the deterioration processes and then to reliably enhance the long-term performance of concrete in practice.

This Special Issue aims to present new findings on mechanism studies in the subject area and to bring innovative solutions for prediction and protection/rehabilitation of concrete durability. Contributions by using modelling approaches and experimental techniques are both welcome. Work based on a more precise description of concrete/cement at meso-, micro- or nanoscales is of particular interest.

Potential topics include but are not limited to the following:

  • Deterioration mechanisms of concrete;
  • Microstructures of cementitious materials;
  • Prediction of degradation process;
  • Prediction of durability properties;
  • Numerical modelling and investigation;
  • Long-term performance of concrete structures;
  • Strengthening, protection and rehabilitation.

Prof. Dr. Qingfeng Liu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • chloride
  • corrosion
  • carbonation
  • freeze–thaw
  • alkali aggregate reactions
  • sulfate attack
  • leaching
  • cracking
  • creep
  • fatigue loading

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Related Special Issue

Published Papers (2 papers)

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Research

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26 pages, 5346 KiB  
Article
Service Life of Pre-Tensioned Concrete Structures in a Chloride Environment on the Example of an Aluminium Foundry Building
by Jarosław Michałek and Filip Gago
Materials 2024, 17(12), 2985; https://doi.org/10.3390/ma17122985 - 18 Jun 2024
Viewed by 629
Abstract
This paper describes a study of the chloride content in the concrete lagging of prestressed concrete elements of the roof structure of an aluminium foundry building. Sources of chloride pollution in industrial facilities are discussed. Methods for collecting dust deposited on the structure [...] Read more.
This paper describes a study of the chloride content in the concrete lagging of prestressed concrete elements of the roof structure of an aluminium foundry building. Sources of chloride pollution in industrial facilities are discussed. Methods for collecting dust deposited on the structure and sampling concrete for chloride concentration testing are presented in detail. The test methods used and the apparatus used to assess the chloride content at the thickness of concrete reinforcement lagging are presented. Investigations of the chloride content in the concrete of the reinforcement cover showed a very high concentration of chloride in the near-surface layer, depending on the location of the element in relation to the source of chloride emission into the environment. In contrast, the concrete of the deeper layers of the lagging contained very small amounts of Cl− chlorides. The results of the chloride content of the lagging concrete were plotted against the distance from the surface of the specimen and approximated by the function C(x,t) based on Fick’s second law and its solution. A satisfactory fit of the course of this function to the experimental results was obtained. Based on the obtained C(x,t) function, the durability of the main structural components of an aluminium foundry industrial hall operating in a chloride environment was estimated. Full article
(This article belongs to the Special Issue Concrete Durability: Deterioration Mechanisms, Prediction and Rehabilitation (2nd Edition))
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Review

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18 pages, 1207 KiB  
Review
Factors Influencing Chloride Ion Diffusion in Reinforced Concrete Structures
by Qiulang Xu, Bin Liu, Lin Dai, Maogui Yao and Xijun Pang
Materials 2024, 17(13), 3296; https://doi.org/10.3390/ma17133296 - 4 Jul 2024
Cited by 1 | Viewed by 1565
Abstract
Reinforced concrete structures are prone to the corrosion of steel bars when exposed to chloride-rich environments, which can severely impact their durability. To address this issue, a comprehensive understanding of the factors influencing chloride ion diffusion in concrete is essential. This paper provides [...] Read more.
Reinforced concrete structures are prone to the corrosion of steel bars when exposed to chloride-rich environments, which can severely impact their durability. To address this issue, a comprehensive understanding of the factors influencing chloride ion diffusion in concrete is essential. This paper provides a summary of recent domestic and foreign research on chloride ion transport in concrete, focusing on six key factors: water–binder ratio, additive content, crack width, ambient temperature, relative humidity, and dry–wet cycles. The findings show that the diffusion coefficient of chloride ions in concrete increases with a higher water–binder ratio and decreases with increased additive content. Additionally, wider cracks result in a greater diffusion of chloride ions. The permeability resistance of concrete to chloride ions decreases with rising temperature and humidity, and dry–wet cycles further accelerate the diffusion of chloride ions. The article concludes by discussing various anti-corrosion measures, such as the use of corrosion inhibitors, surface coatings, and electrochemical treatments, to ensure the longevity of the structure. Finally, directions for future research are proposed. Full article
(This article belongs to the Special Issue Concrete Durability: Deterioration Mechanisms, Prediction and Rehabilitation (2nd Edition))
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