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Sustainable and Advanced Cementitious Materials
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Sustainable and Advanced Cementitious Materials

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

Deadline for manuscript submissions: 20 August 2024 | Viewed by 2180

Special Issue Editors

Prof. Dr. Leonids Pakrastins

E-Mail Website
Guest Editor
Institute of Structural Engineering, Faculty of Civil and Mechanical Engineering, Riga Technical University, Kipsalas 6A, LV-1048, Riga, Latvia
Interests: long-term properties of cementitious materials; structural health monitoring; reinforced concrete structure design; Eurocode adaption in country building regulations
Dr. Andina Sprince

E-Mail Website
Co-Guest Editor
Institute of Structural Engineering, Faculty of Civil and Mechanical Engineering, Riga Technical University, Kipsalas 6A, LV-1048, Riga, Latvia
Interests: innovative concrete and cement composite materials; geopolymer concrete; foamed composite; long-term properties of concrete composites in various stress-strain conditions; physicomechanical properties
Dr. Rihards Gailitis

E-Mail Website
Co-Guest Editor
Institute of Structural Engineering, Faculty of Civil and Mechanical Engineering, Riga Technical University, Kipsalas 6A, LV-1048, Riga, Latvia
Interests: long-term properties of cementitious materials; long-term properties of fiber reinforced cementitious materials; 3D printed cementitious material long-term properties; foamed cementitious composite mechanical and long-term properties

Special Issue Information

Dear Colleagues,

Recently, CO2 emission reduction, as well as building waste reduction and recycling, have been key topics for legislative bodies around the globe. In addition to these issues, new restrictions have been imposed. As the construction industry is one of the most polluting industries, the restrictions, which mostly refer to CO2 reduction of the construction material manufacturing and building processes, have given rise to the need for optimized construction materials and optimized building processes in order to achieve or come close to achieving this goal. As concrete and other cementitious composites are the backbone of modern civil and industrial infrastructures, there is no way to reduce CO2 by abandoning cementitious material usage altogether. Nevertheless, one proposed way is to optimize cementitious material design and to incorporate construction and building waste into the construction materials and their compositions.

Therefore, the goal for this Special Issue of Materials is to attract original contributions, with  topics related to the latest developments in sustainable and innovative cementitious materials, as well as their design and property assessments.

Prof. Dr. Leonids Pakrastins
Dr. Andina Sprince
Dr. Rihards Gailitis
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

  • modern cementitious materials
  • sustainable development
  • innovative construction materials

Published Papers (3 papers)

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Research

11 pages, 13107 KiB  
Article
Research on Macroscopic Mechanical Behavior of Recycled Aggregate Concrete Based on Mesoscale
by Anyu Yang, Qizhi Shang, Yanan Zhang and Junlong Zhu
Materials 2024, 17(11), 2532; https://doi.org/10.3390/ma17112532 - 24 May 2024
Viewed by 374
Abstract
Recycled concrete is a heterogeneous composite material, and the composition and volume fraction of each phase affect its macroscopic properties. In this paper, ANSYS APDL was used to construct a two-dimensional numerical model of recycled aggregate concrete with different replacement rates of recycled [...] Read more.
Recycled concrete is a heterogeneous composite material, and the composition and volume fraction of each phase affect its macroscopic properties. In this paper, ANSYS APDL was used to construct a two-dimensional numerical model of recycled aggregate concrete with different replacement rates of recycled aggregate (0%, 25%, 50%, 75% and 100%), and a uniaxial compression test was carried out to explore the relationship between recycled aggregate content and its macroscopic mechanical behavior. On this basis, the numerical simulation of different strain rates (0.1 s−1, 0.05 s−1, 0.01 s−1, 0.005 s−1 and 0.001 s−1) was carried out. It was found that with the increase in the recycled aggregate replacement rate, the peak stress decreases first and then increases, and the peak strain increases continuously. When the replacement rate of recycled aggregate exceeds 50%, the overall damage area of the material increases rapidly. The strain rate will change the path of the micro-crack initiation and expansion of recycled concrete, as well as the process of damage accumulation and evolution. As a result, the unit area and shape of recycled concrete are different at different strain rates, and the damage degree of each phase material is also different. Full article
(This article belongs to the Special Issue Sustainable and Advanced Cementitious Materials)
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21 pages, 11057 KiB  
Article
Research on Slurry Flowability and Mechanical Properties of Cemented Paste Backfill: Effects of Cement-to-Tailings Mass Ratio and Mass Concentration
by Yan Li, Jianxin Fu, Jiguang Yang and Jie Wang
Materials 2024, 17(10), 2222; https://doi.org/10.3390/ma17102222 - 8 May 2024
Viewed by 479
Abstract
The flowability and mechanical properties are increasingly crucial in the filling process of deep metal mines with mining depths exceeding 1000 m. The rheological properties of filling slurry in the pipeline were analyzed through rheological tests, L-tube self-flow tests, and semi-industrial loop tests. [...] Read more.
The flowability and mechanical properties are increasingly crucial in the filling process of deep metal mines with mining depths exceeding 1000 m. The rheological properties of filling slurry in the pipeline were analyzed through rheological tests, L-tube self-flow tests, and semi-industrial loop tests. The results revealed that with an increase in the cement-to-tailings mass ratio (c/t ratio) and mass concentration, the slurry exhibited a higher flow resistance and decreased stowing gradient. During slurry transportation, the pressure loss in the straight pipe was positively correlated with the slurry flow rate, c/t ratio, and mass concentration. A uniaxial compressive strength (UCS) test was conducted to analyze the mechanical properties of the cemented paste backfill containing BMC (CCPB) in both standard and deep-underground curing environments. The UCS of the CCPB showed an increasing trend with the rise in curing age, mass concentration, and the c/t ratio. The comprehensive analysis concluded that when the c/t ratio is 1:4, and the mass concentration is approximately 74%, and parameters such as the slump, bleeding rate, and flowability of the filling slurry meet the criteria for conveying and goaf filling, resulting in a high-strength filling body. Full article
(This article belongs to the Special Issue Sustainable and Advanced Cementitious Materials)
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15 pages, 3701 KiB  
Article
Enhancing the Mechanical and Durability Properties of Fully Recycled Aggregate Concrete Using Carbonated Recycled Fine Aggregates
by Birori Jean, Hui Liu, Xudong Zhu, Xinjie Wang, Xiancui Yan and Tianyu Ma
Materials 2024, 17(8), 1715; https://doi.org/10.3390/ma17081715 - 9 Apr 2024
Cited by 1 | Viewed by 1008
Abstract
The global construction industry is increasingly utilizing concrete prepared from recycled aggregate as a substitute for natural aggregate. However, the subpar performance of recycled fine aggregate (RFA) has resulted in its underutilization, particularly in the structural concrete exposed to challenging environments, including those [...] Read more.
The global construction industry is increasingly utilizing concrete prepared from recycled aggregate as a substitute for natural aggregate. However, the subpar performance of recycled fine aggregate (RFA) has resulted in its underutilization, particularly in the structural concrete exposed to challenging environments, including those involving chlorine salts and freeze–thaw climates. This study aimed to enhance the performance of RFA as a substitute for river sand in concrete as well as fulfill the present demand for fine aggregates in the construction sector by utilizing accelerated carbonation treatment to create fully recycled aggregate concrete (FRAC) composed of 100% recycled coarse and fine aggregates. The impacts of incorporating carbonated recycled fine aggregate (C-RFA) at various replacement rates (0%, 25%, 50%, 75%, and 100%) on the mechanical and durability properties of FRAC were investigated. The results showed that the physical properties of C-RFA, including apparent density, water absorption, and crushing value, were enhanced compared to that of RFA. The compressive strength of C-RFC100 was 19.8% higher than that of C-RFC0, while the water absorption decreased by 14.6%. In a comparison of C-RFC0 and C-RFC100, the chloride permeability coefficients showed a 50% decrease, and the frost resistance increased by 27.6%. According to the findings, the mechanical and durability properties, the interfacial transition zones (ITZs), and micro-cracks of the C-RFC were considerably enhanced with an increased C-RFA content. Full article
(This article belongs to the Special Issue Sustainable and Advanced Cementitious Materials)
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