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Advanced Materials and Nanotechnologies in Building Composites

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 July 2023) | Viewed by 1056

Special Issue Editor


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Guest Editor
Department of Mechanics, Faculty of Civil Engineering, Czech Technical University in Prague, 166 29 Prague, Czech Republic
Interests: nanoindentation; micromechanics; cement and concrete composites; fly-ash; alkali-activated materials; novel metallic micro-structures; thin films; materials characterization; multi-scale modeling; durability of concrete; nanotechnology of concrete
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Special Issue Information

Dear Colleagues,

The development of nanotechnologies in recent years has influenced the sphere of building materials on a large scale. Characterization of small volumes of material using techniques, such as SEM, FIB, AFM, micro-CT, NMR, nanoindentation and others, enabled the acquisition of unique data on the microstructure of composite building materials and opened the way to modify these materials, improve their properties, and quantify new properties. Advances have been made in the use of nanomaterials in fresh blends to change their viscosity and processability. Nanoparticles serve as reinforcements, densifiers, or hydration modifiers in the microstructure of composites and work to improve the resulting elastic, strength, fracture, thermal, or electrical properties of the composites. Nanomaterials are used as strengthening or repair materials, corrosion inhibitors and coatings. Active surfaces (self-cleaning, hydrophobic, or icephobic) were prepared by applying nanomaterials to building materials. The field of application of nanotechnologies in building materials is already very wide.

The Special Issue will gather contributions that describe new approaches and the latest achievements and advances in the application of nanotechnologies, advances in the characterization of material nanolevel, or nanomodifications of building materials. Bulk, surface, fresh mixture, or hardened state applications are of interest. The Special Issue welcomes research articles and reviews on relevant topics. It is my pleasure to invite you to contribute to this Special Issue.

Prof. Dr. Jiří Němeček
Guest Editor

Manuscript Submission Information

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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

  • building composites
  • nanotechnology
  • nanoparticles
  • nanostructures
  • nanomaterials
  • microstructure modifications
  • microstructure characterization

Published Papers (1 paper)

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Research

16 pages, 12309 KiB  
Article
Effect of Dispersing Carbon Nanotube in Aqueous Solution by Poly-Carboxylic-Based Surfactants on Mechanical and Microstructural Properties as Cementitious Composites
by Won-Woo Kim, Jae-Heum Moon and Seung-Tae Lee
Materials 2023, 16(21), 6880; https://doi.org/10.3390/ma16216880 - 26 Oct 2023
Viewed by 696
Abstract
The development of high-performance concrete using carbon nanotubes (CNTs), which is used in various industries owing to its excellent mechanical properties, has attracted much attention, leading to ongoing research in this area. However, when mixing CNTs into cement paste, there has been limited [...] Read more.
The development of high-performance concrete using carbon nanotubes (CNTs), which is used in various industries owing to its excellent mechanical properties, has attracted much attention, leading to ongoing research in this area. However, when mixing CNTs into cement paste, there has been limited focus on the dispersibility, and, in most cases, aqueous dispersions of CNTs used in other industrial sectors are used. Because CNTs form the structures of bundles or aggregates owing to their high aspect ratio and van der Waals force between particles, the desired dispersibility cannot be obtained when mixing CNTs in powder form with other materials. Therefore, in this study, we examined the applicability of CNT aqueous dispersions using PC-based plasticizer used in concrete. Aqueous dispersions of CNT using PC-based surfactants are prepared and their properties are compared with those of a PVP-based aqueous dispersion. To analyze the mechanical properties, the compressive strength and flexural strength are measured on the 28th day. Then, the dispersibility and microstructure are analyzed using scanning electron microscopy image analysis, thermogravimetric analysis, and BET (Brunauer–Emmett–Teller) analysis. The analysis results show the enhancement of mechanical properties due to the mixing of the CNT dispersion, and the results confirm the applicability of the proposed CNT aqueous dispersions using PC-based surfactants. Full article
(This article belongs to the Special Issue Advanced Materials and Nanotechnologies in Building Composites)
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