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Concrete Technology and Mechanical Properties of Concretes (2nd Edition)
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Concrete Technology and Mechanical Properties of Concretes (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 September 2024) | Viewed by 2642

Special Issue Editor

Dr. Tomasz Ponikiewski

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Guest Editor
Department of Building Processes Engineering and Building Physics, Faculty of Civil Engineering, Silesian University of Technology, Gliwice, Poland
Interests: concrete technology; special concretes; fibre-reinforced concrete; computed tomography research; SFRC; NDT; 3D concrete printing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

New trends in concrete science allow the structure of engineering objects to be shaped more quickly and safely than in the case of concrete with traditional properties and components. Technological operations of forming concrete elements are, in the case of new-generation concrete, considerably simplified, and end results allow hardened concrete structures to be exposed in a more extended way. One modification of the considered concrete is to add various kinds of additives (fibers, waste, modified aggregate, etc.) to its volume as non-conventional components. This is not a new issue in the technology of concrete; however, in the case of concrete with modified brittle matrix composites, it provides a current area of research. Technological problems in applying new-generation concrete modified with non-conventional additives and technologies are the subject of the current Special Issue.

Dr. Tomasz Ponikiewski
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

  • concrete technology
  • special concretes
  • self-compacting concrete
  • fibre-reinforced concrete
  • X-ray computed tomography research
  • non-destructive testing (NDT) of concrete
  • 3D-printed building materials
  • waste and recycled materials

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Related Special Issue

Published Papers (3 papers)

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Research

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20 pages, 5437 KiB  
Article
Testing Mortars for 3D Printing: Correlation with Rheological Behavior
by Ta Minh Phuong Bao, Muy Yeakleang, Sandra Abdelouhab and Luc Courard
Materials 2024, 17(20), 5002; https://doi.org/10.3390/ma17205002 - 12 Oct 2024
Viewed by 464
Abstract
Three-dimensionally printed concrete is a transformative technology that addresses housing shortages due to population growth and enables innovative architectural designs. The objective of this study is to investigate the connection between a conventional test and the rheological properties of 3D-printed concrete. A more [...] Read more.
Three-dimensionally printed concrete is a transformative technology that addresses housing shortages due to population growth and enables innovative architectural designs. The objective of this study is to investigate the connection between a conventional test and the rheological properties of 3D-printed concrete. A more precise assessment of material quality based on traditional evaluation techniques is proposed. Standard tests are conducted to evaluate the consistency of 3D-printed concrete materials. Complementarily, a rheometer is employed to accurately measure key rheological properties, thereby establishing a link with empiric testing methodologies. The correlation between the flow table test and rheological coefficients, such as yield stress and viscosity, has been identified as the most effective in basic experiments for evaluating material behavior. This approach allows for a preliminary assessment of printability without the need for additional complex equipment. The study has successfully established a relationship between flow table tests and rheological parameters. However, further research involving a broader range of materials and print-test experiments is essential to enhance the correlation between other conventional testing methods and rheometer results. Full article
(This article belongs to the Special Issue Concrete Technology and Mechanical Properties of Concretes (2nd Edition))
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14 pages, 4458 KiB  
Article
Microcrack and Porosity Development in Sealed Cement Mortars Measured with Micro-Computed Tomography
by Radek Ševčík, Irena Adámková, Michal Vopálenský, Pavel Martauz and Vít Šmilauer
Materials 2024, 17(13), 3239; https://doi.org/10.3390/ma17133239 - 2 Jul 2024
Viewed by 789
Abstract
For the first time, this paper explores the role of hydration kinetics on microcrack development in cement mortars using the μ-CT technique with a resolution of 2.2 µm. Three binders were tested: fine-grained ordinary Portland cement (OPC) with Blaine fineness of 391 m [...] Read more.
For the first time, this paper explores the role of hydration kinetics on microcrack development in cement mortars using the μ-CT technique with a resolution of 2.2 µm. Three binders were tested: fine-grained ordinary Portland cement (OPC) with Blaine fineness of 391 m2/kg, coarse-grained OPC made from the same clinker with Blaine fineness of 273 m2/kg, and H-cement as a representative of the alkali-activated binder. It was found that most microcracks have a width in the range of 5–10 µm, increasing their occurrence with the progress of sealed hydration. While H-cement and coarse-grained OPC showed a comparable number of microcracks, fine-grained OPC exhibited more than twice the number of microcracks. In this sense, high hydration kinetics induce more microcracks, promoting later coalescence into visible cracks and disintegration of concrete at the end. Therefore, durable concrete with minimum microcracks should be derived from slow hydration kinetics or alkali-activation processes. Full article
(This article belongs to the Special Issue Concrete Technology and Mechanical Properties of Concretes (2nd Edition))
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Review

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28 pages, 10849 KiB  
Review
Technology for Automated Production of High-Performance Building Compounds for 3D Printing
by Adam Hutyra, Magdalena Bańkosz and Bożena Tyliszczak
Materials 2024, 17(15), 3829; https://doi.org/10.3390/ma17153829 - 2 Aug 2024
Viewed by 924
Abstract
Three-dimensional printing technology in construction is a rapidly growing field that offers innovative opportunities for design and construction execution. A key component of this process is the automated production of high-performance construction mixtures that meet specific requirements for strength, fluidity, and setting speed. [...] Read more.
Three-dimensional printing technology in construction is a rapidly growing field that offers innovative opportunities for design and construction execution. A key component of this process is the automated production of high-performance construction mixtures that meet specific requirements for strength, fluidity, and setting speed. This overview article outlines the history and development of 3D printing technology in the construction industry, describes various printing technologies, and discusses the properties and requirements for construction mixes. Special attention is given to automated systems for batching and mixing ingredients, which increase the precision and efficiency of production. The different types of construction mixes used in 3D printing and the main technical and operational challenges associated with their application are also presented. The article’s conclusions highlight the potential of this technology to revolutionize the construction industry by improving efficiency and reducing costs and project lead times. Full article
(This article belongs to the Special Issue Concrete Technology and Mechanical Properties of Concretes (2nd Edition))
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