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Applied Sciences
Special Issues
Carbon Neutrality and Carbon Reductions in the Concrete Industry
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Carbon Neutrality and Carbon Reductions in the Concrete Industry

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (20 September 2022) | Viewed by 3554

Special Issue Editors

Prof. Dr. Xiaoyong Wang

E-Mail Website
Guest Editor
Department of Architectural Engineering, Kangwon National University, Chuncheon-si 24341, Republic of Korea
Interests: cement and concrete; composite structures; numerical modeling
Special Issues, Collections and Topics in MDPI journals
Dr. Xu Yang

E-Mail Website
Co-Guest Editor
Department of Engineering, Kangwon National University, Chuncheon-si 24341, Korea
Interests: biochar blended cement-based materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The United Nations Climate Conference proposed to achieve global carbon neutrality by 2050. In the process of making concrete, a large amount of cement is consumed, and a large amount of carbon dioxide is emitted. How to achieve carbon neutrality and carbon reductions in the concrete industry? It is a problem that governments and researchers from various countries are very concerned about and needs to be solved urgently. The purpose of this Special Issue is to provide a forum for everyone to talk about carbon neutrality and carbon reductions in concrete. Through this Special Issue, we can explore practical technical routes for carbon neutralization and carbon reductions in concrete, such as the material design of carbon neutral concrete, the product development of carbon-neutral concrete, and the performance evaluation of low-CO2 concrete. The research topics in this issue include but are not limited to the following topics: low-carbon concrete; negative carbon concrete; concrete admixture; concrete carbonation curing; concrete durability; concrete structure life cycle design; volume stability of composite concrete; material design considering climate change; steel slag concrete product development; strength. This Special Issue includes original papers and reviews. You are welcome to publish your latest work in this Special Issue.

Dr. Xiao Yong Wang
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. Applied Sciences 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 2400 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

  • carbon neutrality
  • low-CO2 concrete
  • minus-CO2 concrete
  • mineral admixtures
  • durability
  • carbonation curing
  • service life
  • climate change
  • steel slag
  • material design

Published Papers (2 papers)

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Research

14 pages, 2145 KiB  
Article
Model-Based Methods to Produce Greener Metakaolin Composite Concrete
by Ki-Bong Park, Run-Sheng Lin, Yi Han and Xiao-Yong Wang
Appl. Sci. 2021, 11(22), 10704; https://0-doi-org.brum.beds.ac.uk/10.3390/app112210704 - 12 Nov 2021
Cited by 5 | Viewed by 1426
Abstract
Metakaolin is reactive and is widely used in the modern concrete industry. This study presents an integrated strength–sustainability evaluation framework, which we employed in the context of metakaolin content in concrete. First, a composite hydration model was employed to calculate reactivity of metakaolin [...] Read more.
Metakaolin is reactive and is widely used in the modern concrete industry. This study presents an integrated strength–sustainability evaluation framework, which we employed in the context of metakaolin content in concrete. First, a composite hydration model was employed to calculate reactivity of metakaolin and cement. Furthermore, a hydration-based linear equation was designed to evaluate the compressive strength development of metakaolin composite concrete. The coefficients of the strength evaluation model are constants for different mixtures and ages. Second, the sustainability factors—CO2 emissions, resource consumption, and energy consumption—were determined based on concrete mixtures. Moreover, the sustainability factors normalized for unit strength were obtained based on the ratios of total CO2 emissions, energy consumption, and resource consumption to concrete strength. The results of our analysis showed the following: (1) As the metakaolin content increased, the normalized CO2 emissions and resource consumption decreased, and the normalized energy first decreased and then slightly increased. (2) As the concrete aged from 28 days to three months, the normalized CO2 emissions, resource consumption, and energy consumption decreased. (3) As the water/binder ratio decreased, the normalized CO2 emissions, resource consumption, and energy consumption decreased. Summarily, the proposed integrated strength–sustainability evaluation framework is useful for finding greener metakaolin composite concrete. Full article
(This article belongs to the Special Issue Carbon Neutrality and Carbon Reductions in the Concrete Industry)
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16 pages, 4552 KiB  
Article
Property Analysis of Slag Composite Concrete Using a Kinetic–Thermodynamic Hydration Model
by Ki-Bong Park, Yi-Sheng Wang and Xiao-Yong Wang
Appl. Sci. 2021, 11(16), 7191; https://0-doi-org.brum.beds.ac.uk/10.3390/app11167191 - 04 Aug 2021
Cited by 5 | Viewed by 1496
Abstract
Slag is increasingly unitized for the production of sustainable concrete. This paper presents a procedure with which to analyze the property development of slag composite concrete. Experimental studies of the hydration heat and compressive strength development and simulation studies using a kinetic hydration [...] Read more.
Slag is increasingly unitized for the production of sustainable concrete. This paper presents a procedure with which to analyze the property development of slag composite concrete. Experimental studies of the hydration heat and compressive strength development and simulation studies using a kinetic hydration model and a thermodynamic model were performed. First, we performed an experimental study of the isothermal hydration heat of cement–slag blends. Based on the results of the experimental study on cumulative hydration heat, the reaction degree of slag was determined. We found that the reaction degree of slag decreased as the slag content increased. Second, the reaction degree of slag and cement were used as the input parameters for the Gibbs energy minimization (GEM) thermodynamic equilibrium model. Moreover, the phase assemblage of hydrating cement–slag was determined. The trends of calcium silicate hydrate (CSH) are similar to those of strength. Based on the CSH content, the strength of hardening cement–slag blends was determined. In addition, the calcium hydroxide (CH) content resulting from the thermodynamic model shows good agreement with the experimental results. In summary, the integrated kinetic–thermodynamic model is useful for analyzing the properties of cement–slag blends. Full article
(This article belongs to the Special Issue Carbon Neutrality and Carbon Reductions in the Concrete Industry)
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