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Special Issue "Environmentally Friendly Composites Incorporating Waste Materials"

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Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45A, 15–351 Białystok, Poland
Interests: building materials; concrete technology; recycling of concrete structures; lightweight concrete; geopolymer composites
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Dr. Katarzyna Kalinowska-Wichrowska

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Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, Poland
Interests: civil engineering; concrete technology, recycling of concrete methods, recycled materials and aggregates; waste additions, circular economy; eco-friendly building materials, construction and demolition waste; supplementary cementitious materials, geopolymers

Dr. Hwa Kian Chai

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Institute for Infrastructure and Environment, The University of Edinburgh, Edinburgh EH9 3FG, UK
Interests: acoustic emission testing and evaluation; surface wave methods, Integrated elastic wave methodologies for structural assessment; database modelling and analysis for structural risk; low-carbon and smart concrete materials; repair and strengthening
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are initiating a new Special Issue on environmentally friendly composites that incorporate waste materials. We are particularly interested in cement and geopolymer composites in which waste materials are used, such as recycled concrete aggregates, recycled ceramic aggregates, recycled mortar, fly ash, blast furnace slag, plant waste and others. Articles can present both new products and the process of their production, as well as the waste processing technology used in forming the composite. It is recommended to indicate the ecological aspect, e.g., CO₂ reduction, waste management, limiting the consumption of natural resources, etc. Microstructure studies of composites using methods such as SEM images, X-ray diffraction, thermal analysis and others are acceptable. However, papers on other composites and wastes not mentioned above will also be considered.

The results of your latest research and your achievements will enrich our Special Issue thematically, so we invite you to share it with us and submit your manuscript.

Dr. Edyta Pawluczuk
Dr. Katarzyna Kalinowska-Wichrowska
Dr. Hwa Kian Chai
Guest Editors

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 composites
geopolymer concretes
recycled aggregate
ceramic waste
fly ash
microstructure
CO₂ reduction
X-ray diffraction
thermal analysis

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Research

Open AccessArticle

Effects of Chemicals Exposure on the Durability of Geopolymer Concrete Incorporated with Silica Fumes and Nano-Sized Silica at Varying Curing Temperatures

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Materials 2023, 16(18), 6332; https://doi.org/10.3390/ma16186332 - 21 Sep 2023

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Abstract

Durable concrete significantly reduces the spalling caused by chemical damage. The objective of current research is to substitute cement with supplementary such as fly ash (FA), ground granulated blast furnace slag (GGBS), and alccofine (AF). Additionally, the impact of nano-silica (NS) and silica fumes (SF) on the GPC durability when cured at various temperatures has been attempted. In order to perform this, GPC samples were produced by combining NS and SF at proportions of 0.5% NS + 5% SF, 1% NS + 10% SF, and 1.5% NS + 15% SF, and then cured at temperatures of 27 °C, 60 °C, 90 °C, and 120 °C, respectively. In this research, all concrete specimens were continuously immersed for twelve weeks under four different chemicals, i.e., HCl (2%), H₂SO₄ (2%), NaCl (6%), and Na₂SO₄ (6%). The influence of chemical attack on the qualities of concrete was examined by evaluating the water absorption, sorptivity, loss of mass, and loss of GPC strength. The durability aspect is also studied by visual appearance and mass loss under harmful chemical attack. The combination of GPC with integrated NS and SF affords great resistance against chemical attacks. The percentages of these two components are 1.5% and 15%. For GPC specimens, when cured at 90 °C, the resultant strength is found at its maximum. Full article

(This article belongs to the Special Issue Environmentally Friendly Composites Incorporating Waste Materials)

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