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Recent Advances in Cementitious Materials
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Recent Advances in Cementitious Materials

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 2984

Special Issue Editor

Prof. Dr. Peiyu Yan

E-Mail Website
Guest Editor
Department of Civil Engineering, Tsinghua University, Beijing 100084, China
Interests: cementitious materials; hydration mechanism of composite binders; utilization of industrial by-products for the manufacture of building materials; high-performance concrete; durability of concrete materials and structures
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Carbon neutrality and peak carbon dioxide emissions are hot topics now for the sustainable development of our world. Some advances in novel cementitious materials and the basic theories of cement chemistry have been achieved in recent years. Composite binders containing various kinds of supplementary cementitious materials have been developed to reduce the carbon footprint of concrete. Their hydration mechanism and properties, however, are not same as those of typical Portland cement. The relationship between their composition, microstructure, and properties has been comprehensively investigated. Therefore, this Special Issue invites the submission of works related to the preparation and microstructural characteristics of novel composite cementitious materials, as well as their properties and applications in different fields. This Special Issue may be very useful for readers to gain a greater understanding of recent advances in cementitious materials. For authors, the issue will be a good opportunity to publish their work after peer review by expert researchers in cementitious materials. Review articles by experts in the field will also be welcome.

Prof. Dr. Peiyu Yan
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. Molecules 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 2700 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

  • cementitious materials
  • composition
  • hydration
  • microstructure
  • performance

Published Papers (2 papers)

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Review

20 pages, 2951 KiB  
Review
Effect of Plant Fiber on Early Properties of Geopolymer
by Chun Lv, Dan Wu, Guoliang Guo, Yanming Zhang, Shuang Liu, Enxiang Qu and Jie Liu
Molecules 2023, 28(12), 4710; https://doi.org/10.3390/molecules28124710 - 12 Jun 2023
Cited by 1 | Viewed by 987
Abstract
Geopolymer (GP) is environmentally friendly, has good mechanical properties and long-term workability, and has broad application prospects. However, due to the poor tensile strength and toughness of GPs, they are sensitive to microcracks, which limits their application in engineering. Fiber can be added [...] Read more.
Geopolymer (GP) is environmentally friendly, has good mechanical properties and long-term workability, and has broad application prospects. However, due to the poor tensile strength and toughness of GPs, they are sensitive to microcracks, which limits their application in engineering. Fiber can be added to GPs to limit the growth of cracks and enhance the toughness of the GP. Plant fiber (PF) is cheap, easy to obtain, and abundant in source, which can be added to GP to improve the properties of composites. This paper reviews recent studies on the early properties of plant fiber-reinforced geopolymers (PFRGs). In this manuscript, the properties of PFs commonly used for GP reinforcements are summarized. The early properties of PFRGs were reviewed, including the rheological properties of fresh GPs, the early strength of PFRGs, and the early shrinkage and deformation properties of PFRGs. At the same time, the action mechanism and influencing factors of PFRGs are also introduced. Based on the comprehensive analysis of the early properties of PFRGs, the adverse effects of PFs on the early properties of GPs and the solutions were summarized. Full article
(This article belongs to the Special Issue Recent Advances in Cementitious Materials)
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22 pages, 3922 KiB  
Review
Alkaline Degradation of Plant Fiber Reinforcements in Geopolymer: A Review
by Chun Lv and Jie Liu
Molecules 2023, 28(4), 1868; https://doi.org/10.3390/molecules28041868 - 16 Feb 2023
Cited by 9 | Viewed by 1763
Abstract
Plant fibers (PFs), such as hemp, Coir, and straw, are abundant in resources, low in price, light weight, biodegradable, have good adhesion to the matrix, and have a broad prospect as reinforcements. However, the degradation of PFs in the alkaline matrix is one [...] Read more.
Plant fibers (PFs), such as hemp, Coir, and straw, are abundant in resources, low in price, light weight, biodegradable, have good adhesion to the matrix, and have a broad prospect as reinforcements. However, the degradation of PFs in the alkaline matrix is one of the main factors that affects the durability of these composites. PFs have good compatibility with cement and the geopolymer matrix. They can induce gel growth of cement-based materials and have a good toughening effect. The water absorption of the hollow structure of the PF can accelerate the degradation of the fiber on the one hand and serve as the inner curing fiber for the continuous hydration of the base material on the other. PF is easily deteriorated in the alkaline matrix, which has a negative effect on composites. The classification and properties of PFs, the bonding mechanism of the interface between PF reinforcements and the matrix, the water absorption of PF, and its compatibility with the matrix were summarized. The degradation of PFs in the alkaline matrix and solution, drying and wetting cycle conditions, and high-temperature conditions were reviewed. Finally, some paths to improve the alkaline degradation of PF reinforcement in the alkaline matrix were proposed. Full article
(This article belongs to the Special Issue Recent Advances in Cementitious Materials)
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