Special Issue "Image Analysis and Processing for Cement-based Materials"
Deadline for manuscript submissions: closed (15 February 2016)
Dr. Hong Wong
Department of Civil and Environmental Engineering Imperial College London,Imperial College Road, London, SW7 2AZ, UK
Website | E-Mail
Interests: Microstructure characterisation; Concrete petrography; Image analysis; Durability of concrete structures; Mass transport properties; Modelling properties from microstructure
I am delighted to announce the forthcoming Special Issue on “Image Analysis and Processing for Cement-Based Materials” in the journal Materials. Imaging techniques are increasingly being used to solve a variety of research questions in the field of cement-based materials. These techniques include optical and fluorescence microscopy, electron microscopy, X-ray microanalysis, computed tomography, confocal microscopy, nuclear magnetic resonance, radiography, thermography, ultrasonic, radar, scanners, and high-speed imaging, and can offer a great deal of information at different length scales and resolutions. Their full potential is achieved when combined with image analysis, which allows one to capture, process, and extract meaningful quantitative data from images. The versatility of this approach is evident from its diverse range of application in cement and concrete research that include:
• Characterization of cements, additions, reaction products and aggregates;
• Analysis of pore structure, cracks, and interfaces;
• Understanding hydration reactions, mass transport phenomena, aging, and degradation mechanisms;
• Development of new materials, such as novel binders and admixtures;
• Identification of concrete constituents and mix proportion;
• Non-destructive detection of voids, defects, reinforcement, and other sub-surface features;
• Deformation and strain mapping;
• Screening for deleterious agents and contaminated materials;
• Assessment of deteriorated and damaged structures;
• Development of predictive modeling.
The aim of this Special Issue is to showcase the latest research and advances in this area, particularly on the development of image analysis and processing techniques, and applications to cement-based materials. Original research papers, state-of-the-art reviews, communications, and discussions are welcomed
Dr. Hong Wong
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 papers will be 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 monthly 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 1500 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.
- imaging techniques
- image analysis
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Effect of Moisture Exchange on Interface Formation in the Repair System Studied by X-Ray Micro-Computed Tomography
Authours: Mladena Lukovic *, Guang Ye
Affiliation: Section of Materials and Environment, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands
Abstract: In concrete repair systems, material properties in the repair material and interface are greatly influenced by the moisture exchange between the repair material and the substrate. If the substrate is dry, it can absorb water from the repair material and reduce its w/c ratio. This further affects the hydration rate of cement based material. Beside the change in hydration rate, void content at the interface between the two materials is also affected. Therefore, the influence of moisture exchange on the void content in the repair system as a function of initial saturation level of the substrate is investigated. Repair systems with varying level of substrate saturation are made. Moisture exchange in these repair systems as a function of time is monitored by X-ray absorption technique. After a specified curing age (3 days), the internal microstructure of the repair systems was captured by micro-computed X-ray tomography (CT-scanning). From reconstructed images, different phases in the repair system (repair material, substrate, voids) can be distinguished. In order to quantify the void content, voids were thresholded and their percentage calculated. It was found that significantly more voids form when the substrate is dry prior to application of the repair material. Furthermore, voids in the interface are found to form as a continuation of pre-existing surface voids in the substrate material. A similar phenomenon is known to occur in lightweight aggregate concrete, but was not previously reported in repair systems. Knowledge about moisture exchange effects can provide engineers with recommendations about substrate preconditioning in experiments and field practice.
Keywords: water movement; repair system; interface; X-ray micro-computed tomography