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Properties and Applications of Cement and Concrete Composites
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Properties and Applications of Cement and Concrete Composites

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 1190

Special Issue Editors

Dr. Yingliang Zhao

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Guest Editor
Department of Civil And Environmental Engineering, TU428, The Hong Kong Polytechnic University, Kowloon, Hong Kong
Interests: waste management and recycling; low-carbon cementitious materials; mineral carbonation
Dr. Kai Cui

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Guest Editor
Department of Civil And Environmental Engineering, TU428, The Hong Kong Polytechnic University, Kowloon, Hong Kong
Interests: carbonation; UHPC; nanomaterials; utilization of industrial wastes
Special Issues, Collections and Topics in MDPI journals
Dr. Yanfeng Fang

E-Mail Website
Guest Editor
School of Civil Engineering, Shenyang Jianzhu University, No.25 Hunnan Rd., Shenyang 110168, China
Interests: mineral carbonation; low-carbon cementitious materials; utilization of industrial wastes; hydration chemistry of cement
Special Issues, Collections and Topics in MDPI journals
Dr. Weipei Xue

E-Mail Website
Guest Editor
School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
Interests: high-strength and high-performance concrete; hydraulic coupling characteristics; damage mechanism; constitutive model; durability of concrete materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Since the invention of Portland cement in 1824, cement has been developed and applied for 200 years. Cement-based materials are the world's most widely used building materials due to their wide range of raw materials and low cost. However, cement-based materials come with a number of disadvantages, such as high brittleness, easy cracking, low tensile strength, poor durability, heavyweight, and high energy consumption. With the continuous acceleration of urbanization, there are higher requirements for developing and utilizing cement-based materials. Cement-based materials are moving towards high strength and toughness, lightweight, multi-functionality, high efficiency, intelligence, and sustainable development. This Special Issue mainly focuses on the latest research on cement and concrete and realizes the high-value utilization of cement-based composite materials through research in different dimensions.

Possible research topics include, but are not limited to, the following:

  • Fiber-reinforced concrete;
  • Low-carbon cement and concrete;
  • Solid waste utilization of building materials;
  • Carbonation of building materials;
  • Durability of concrete;
  • Alkali-activated cement-based materials;
  • Nanomaterial-reinforced cement-based materials;
  • Engineering application of concrete.

Dr. Yingliang Zhao
Dr. Kai Cui
Dr. Yanfeng Fang
Dr. Weipei Xue
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

  • carbonation
  • solid waste utilization
  • cement-based composites
  • microstructure
  • engineering application
  • mechanical properties
  • durability
  • supplementary cementitious materials

Published Papers (3 papers)

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Research

17 pages, 5011 KiB  
Article
Effects of Different Calcium Sources on Mechanical Properties of Metakaolin Geopolymers
by Yiren Wang, Jiangtao Zhang, Jie Liu, Deke Fan, Haiyang Qu, Lingzhu Zhou and Sen Zheng
Materials 2024, 17(9), 2087; https://doi.org/10.3390/ma17092087 - 29 Apr 2024
Viewed by 333
Abstract
Metakaolin-based geopolymers have substantial potential as replacements for cement, but their relatively inferior mechanical properties restrict their application. This paper aims to enhance the mechanical properties of metakaolin-based geopolymers by incorporating appropriate amounts of calcium sources. CaCO3, Ca(OH)2, and [...] Read more.
Metakaolin-based geopolymers have substantial potential as replacements for cement, but their relatively inferior mechanical properties restrict their application. This paper aims to enhance the mechanical properties of metakaolin-based geopolymers by incorporating appropriate amounts of calcium sources. CaCO3, Ca(OH)2, and CaSO4 are three types of calcium sources commonly found in nature and are widely present in various industrial wastes. Thus, the effects of these three calcium sources on the performance of metakaolin-based geopolymers were studied. Through the analysis of the mechanical properties, heat-release behavior during hydration, hydration products, and microstructure of geopolymers, the effectiveness of the aforementioned calcium sources in improving the performance of metakaolin-based geopolymer was evaluated, and the mechanisms of action were elucidated. The results indicate that the pozzolanic reaction between CH and MK could promote MK hydration and increase the proportion of CASH gel in the hydration products, thereby facilitating the setting of the geopolymer and enhancing its strength. CS could react with the active aluminates in MK to form ettringite, thus forming a higher early strength. CC had a lower reactivity with MK and does not improve the performance of MK-based geopolymers. Full article
(This article belongs to the Special Issue Properties and Applications of Cement and Concrete Composites)
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16 pages, 5128 KiB  
Article
Effect of Public Fillers on Cement-Stabilized Recycled Mixes of Road Performance: Mechanical Properties, Microstructure, and Durability
by Ming Zhang, Chen Cheng, Kingsley Chiang, Xinxin Wang, Yazhi Zhu and Hui Luo
Materials 2024, 17(9), 2018; https://doi.org/10.3390/ma17092018 - 26 Apr 2024
Viewed by 286
Abstract
In order to address the challenges of resource utilization posed by construction waste, the substitution of natural aggregate (NA) with public fill (PF) contents was investigated for load reclamation and road grassroots applications. A comprehensive assessment of road performance for the recycled mixture [...] Read more.
In order to address the challenges of resource utilization posed by construction waste, the substitution of natural aggregate (NA) with public fill (PF) contents was investigated for load reclamation and road grassroots applications. A comprehensive assessment of road performance for the recycled mixture was conducted, focusing on parameters such as unconfined compressive strength, splitting strength, compressive resilience modulus, dry shrinkage, and frost resistance. Additionally, the impact of incorporating PF at various types and replacement ratios on the microstructure of cement-stabilized aggregate (CSA) was analyzed. The results indicated that the unconfined compressive strength of cement-stabilized recycled mixture with varying PF contents meets the base strength requirements for heavy, medium, and light traffic pavement on secondary and sub-secondary roads in China. Notably, the unconfined compressive strength and resilience modulus follow a similar pattern, reaching their peak at a 25% PF content. Microscopic examination reveals that an appropriate PF content leads to the predominant formation of C(N)-A-S-H, hydrotalcite, Ca(OH)2, and CaCO3 as paste reaction products. As the replacement of public fill increases from 0% to 25%, there is a gradual stacking of gel products, which enhances the compactness of the microstructure by cementing together unreacted particles. Consequently, this process reduces dry shrinkage strain and effectively mitigates the formation of reflection cracks. Applying large quantities of public fill to road construction can effectively deal with various waste accumulation problems and produce a novel road material with significant social, economic, and environmental benefits. Full article
(This article belongs to the Special Issue Properties and Applications of Cement and Concrete Composites)
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16 pages, 2942 KiB  
Article
Design and Preparation Technology of Green Multiple Solid Waste Cementitious Materials
by Yexin Ge, Xianping Liu, Zhonghe Shui, Xu Gao, Wu Zheng, Zengchao Zhu and Xudong Zhao
Materials 2024, 17(9), 1998; https://doi.org/10.3390/ma17091998 - 25 Apr 2024
Viewed by 354
Abstract
For solid waste-based cementitious materials, most scholars focus their research on the hydration reaction of cementitious materials, but there is still a lack of solid waste design that comprehensively considers mechanical properties and durability. Therefore, this article focuses on exploring the mix of [...] Read more.
For solid waste-based cementitious materials, most scholars focus their research on the hydration reaction of cementitious materials, but there is still a lack of solid waste design that comprehensively considers mechanical properties and durability. Therefore, this article focuses on exploring the mix of design and the microscopic and macroscopic properties of multi solid waste cementitious materials (MSWCMs), namely steel slag (SS), slag powder (SP), desulfurization gypsum (DG), fly ash (FA), and ordinary Portland cement (OPC). According to the orthogonal experimental results, the compressive strength of MSWCMs is optimal when the OPC content is 50% and the SS, SP, DG, and FA contents are 10%, 20%, 5%, and 15%, respectively. The MSWCMs group with an OPC content of 50% and SS, SP, DG, and FA contents of 5%, 15%, 5%, and 25% was selected as the control group. The pure OPC group was used as the blank group, and the optimal MSWCMs ratio group had a 28-day compressive strength of 50.7 megapascals, which was 14% and 7.6% higher than the control group and blank group, respectively. The drying shrinkage rate and resistance to chloride ions were also significantly improved, with maximum increases of 22.9%, 22.6%, and 8.9%, 9.8%, respectively. According to XRD, TG-DTG, and NMR testing, the improvement in macroscopic performance can be attributed to the synergistic effect between various solid wastes. This synergistic effect produces more ettringite (AFt) and C-(A)-S-H gel. This study provides a good theoretical basis for improving the comprehensive performance of MSWCMs and is conducive to reducing the use of cement, with significant economic and environmental benefits. Full article
(This article belongs to the Special Issue Properties and Applications of Cement and Concrete Composites)
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