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Structural, Mechanical, and Thermal Properties of Mortars, Cements, and Alternative...
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Structural, Mechanical, and Thermal Properties of Mortars, Cements, and Alternative 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 (31 October 2021) | Viewed by 3205

Special Issue Editor

Dr. Jaroslav Pokorný

E-Mail Website
Guest Editor
Department of Civil Engineering, Faculty of Technology, Institute of Technology and Business in České Budějovice, 370 01 České Budějovice, Czech Republic
Interests: building composites; alkali activated materials; concrete material technology; structural properties; waste supplementary materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

I am delighted to announce the oncoming Special Issue entitled “Structural, Mechanical, and Thermal Properties of Mortars, Cements, and Alternative Composites” in the Materials journal. Various kinds of concretes and mortars are widely applied in the construction industry all over the world due to their availability and beneficial utility properties. However, the growing production of binders, such as Portland cement, lime hydrate, etc., and intensive quarrying of natural aggregates, are tied with environmental impacts in the form of increased emission of greenhouse gases and excessive depletion of natural non-renewable resources. On the other hand, global industrial productions generate a considerable amount of wastes and by-products which either can supplement the input raw materials or can intentionally and suitably modify some material properties of building composites and thus contribute to the higher rate of sustainability in the construction industry.

This Special Issue is focused on the research of traditional building composites as well as their alternatives in alkali-activated bases that contribute to the preservation of the environment and dispose with advanced material properties and increased durability. In this sense, original research papers, state-of-the-art reviews, communications, and discussions are welcomed.

Dr. Jaroslav Pokorný
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

  • cement-based composits
  • leightweight concrete
  • mortar
  • thermal performance
  • durability
  • alternative binders
  • industrial wastes and by-pruducts
  • pozzolanic materials
  • artificial aggregates
  • mechanical resistance

Published Papers (2 papers)

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Research

12 pages, 13586 KiB  
Article
Impact of Elevated Temperatures on Strength Properties and Microstructure of Calcium Sulfoaluminate Paste
by Konrad A. Sodol, Łukasz Kaczmarek, Jacek Szer, Sebastian Miszczak and Mariusz Stegliński
Materials 2021, 14(22), 6751; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14226751 - 09 Nov 2021
Cited by 2 | Viewed by 1179
Abstract
This article is motivated by civil fire safety. Fire-prevention engineering demands a wide range of information about building materials including alternative cements, for instance CSA-cement. Because of exposure of the cement-base material to a high temperature, its strength properties deteriorate due to dehydration [...] Read more.
This article is motivated by civil fire safety. Fire-prevention engineering demands a wide range of information about building materials including alternative cements, for instance CSA-cement. Because of exposure of the cement-base material to a high temperature, its strength properties deteriorate due to dehydration connected with phase and microstructure changes. Previous research indicated that the main endothermic reaction of CSA-based composite, dehydration of ettringite, might be used as a cooling system for a metal structure during fire-load. This article examines visual assessment, microstructure, density, as well as flexural and compressive strength parameters of CSA-based composite after isothermal heating at temperatures from 23 °C to 800 °C. The results of SEM/EDS investigations showed that the calcium sulfoaluminate paste may start partially re-sintering above 600 °C. Mechanical tests revealed significant reduction of strength parameters but residual compressive strength was maintained in the whole temperature range e.g., 8 MPa at 800 °C. Additionally, visual assessment of the specimens indicated that it might be possible to predict the material temperature heating based on the specific surface color. These findings add to the evidence of general knowledge about CSA hydrates. Full article
(This article belongs to the Special Issue Structural, Mechanical, and Thermal Properties of Mortars, Cements, and Alternative Composites)
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16 pages, 2840 KiB  
Article
Lightweight Concretes with Improved Water and Water Vapor Transport for Remediation of Damp Induced Buildings
by Jaroslav Pokorný, Radek Ševčík, Jiří Šál, Lucie Zárybnická and Jaroslav Žák
Materials 2021, 14(19), 5902; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14195902 - 08 Oct 2021
Cited by 5 | Viewed by 1468
Abstract
Most of the historical and old building stock in Europe are constructed from masonry, when brick, stones, or their combination are bound with traditional mortars. Rising damp, due to accompanying effects, is the main factor influencing the quality of indoor climate as well [...] Read more.
Most of the historical and old building stock in Europe are constructed from masonry, when brick, stones, or their combination are bound with traditional mortars. Rising damp, due to accompanying effects, is the main factor influencing the quality of indoor climate as well as having an important impact on the durability of masonry structures. In this study, new types of lightweight concrete with waste aggregate content as a suitable material for remediation of damp damaged masonries were designed and tested. Alternative aggregate served as silica sand substitution in the range of 0–100 vol.%. Basic structural properties, mechanical resistance, water, and water vapor transport properties were measured after 28 days of water curing and were compared with dense reference concrete and with traditional masonry materials as well. Moreover, the porous structure of produced concretes and changes caused by usage of alternative aggregate usage were evaluated with the mercury intrusion porosimetry (MIP) technique. Obtained experimental data showed the suitability of modified concretes with 25–50 vol.% of waste aggregate content to ensure acceptable strength and hydric properties, and these properties were found to be comparable with masonry structures and materials used in the past. Full article
(This article belongs to the Special Issue Structural, Mechanical, and Thermal Properties of Mortars, Cements, and Alternative Composites)
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