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Recent Advances in Cement and Concrete Composites Materials
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Recent Advances in Cement and Concrete Composites Materials

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

Deadline for manuscript submissions: closed (20 April 2023) | Viewed by 8214

Special Issue Editors

Prof. Dr. Peng Zhang

E-Mail Website
Guest Editor
School of Civil Engineering, Qingdao University of Technology, Qingdao, China
Interests: durability of concrete structures; cement-based materials; building materials
Dr. Jiuwen Bao

E-Mail Website
Guest Editor
Department of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
Interests: durability; cementitious composites; solid waste utilization
Special Issues, Collections and Topics in MDPI journals
Dr. Yan Wang

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an, China
Interests: durability of concrete structures; Intelligent sensing concrete; performance improvement

Special Issue Information

Dear Colleagues,

In recent decades, the great demand of infrastructure constructions significantly promotes the current rapid development and advances being made in the general field of cement and concrete composite materials technology. With growing demand for the development of multifunctional, high-performance, and high durable construction materials, the investigations on the advanced cement-based construction materials, including material design, preparation and processing, properties characterization, the engineering application, and performance monitoring in the service environments should be conducted. Aiming at promoting the application of advanced cement and concrete composites materials in practical engineering exposed to harsh environments, it is necessary to conduct systematic investigations in order to gain an in-depth understanding of cement-based materials properties. Thus, this Special Issue focuses on the recent advances in cement and concrete composites. Original research papers, communications, and reviews are welcome.

Topics of interest include but are not limited to the following:

  • Design, fabrication, and practical applications of advanced cement-based materials;
  • Microstructure characterization (as it relates to engineering properties), mechanical and durability-related properties;
  • Composite mechanics/technology, testing and test methods;
  • Modeling and simulations theories, techniques, methods, and applications in construction materials;
  • Mechanism of damage deterioration, long-term service performance, and life cycle cost analysis;
  • Degradation and repair of cement-based composites materials in a complex service environment;
  • Carbon capture and sequestration, and green sustainable analysis.

Prof. Dr. Peng Zhang
Dr. Jiuwen Bao
Dr. Yan Wang
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. 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

  • cement-based materials
  • durability of concrete
  • properties characterization
  • long-term service performance
  • multi-scale analysis
  • low-carbon cementitious materials

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Published Papers (4 papers)

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Research

20 pages, 7840 KiB  
Article
Experimental and Numerical Study of the Strength Performance of Deep Beams with Perforated Thin Mild Steel Plates as Shear Reinforcement
by Khem Fei Chai, Kai Siong Woon, Jee Khai Wong, Jee Hock Lim, Foo Wei Lee and Yee Ling Lee
Appl. Sci. 2023, 13(14), 8217; https://doi.org/10.3390/app13148217 - 15 Jul 2023
Cited by 2 | Viewed by 1339
Abstract
This study aims to investigate a new shear reinforcement method which utilizes thin mild steel (TMS) plates as shear reinforcement in deep beams to replace conventional reinforcement. Thirteen reinforced concrete deep beam specimens with three different plate thicknesses and four varying perforated hole [...] Read more.
This study aims to investigate a new shear reinforcement method which utilizes thin mild steel (TMS) plates as shear reinforcement in deep beams to replace conventional reinforcement. Thirteen reinforced concrete deep beam specimens with three different plate thicknesses and four varying perforated hole arrangements on the TMS plates were experimentally tested to determine the load-carrying capacity and crack pattern. The experimental results indicate that the 2.0 mm thick TMS plate has the highest load-carrying capacity. Among the four different hole arrangements on the TMS plates, the perforated plates with a three-column hole arrangement show the best performance in terms of load-carrying capacity, with a 2.9% increment against the control beam specimen. The specimens also demonstrated compatible elastic stiffness with the control beam that used conventional shear links. This shows that TMS plates have the potential to replace conventional shear links in deep beams. This proposed method also changed the failure mode from conventional diagonal shear tension failure to a combination of flexural failure and shear deformation. A numerical model was developed and was found to have a good correlation with the experimental results, demonstrating potential for use in future parametric investigations on deep beams and cost reduction in future experimental work. Full article
(This article belongs to the Special Issue Recent Advances in Cement and Concrete Composites Materials)
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18 pages, 5019 KiB  
Article
Comparative Studies on Steel Corrosion Resistance of Different Inhibitors in Chloride Environment: The Effects of Multi-Functional Protective Film
by Lei Cui, Xiaojian Gao, Meiyan Hang and Tiefeng Chen
Appl. Sci. 2023, 13(7), 4446; https://doi.org/10.3390/app13074446 - 31 Mar 2023
Cited by 4 | Viewed by 2413
Abstract
A corrosion inhibitor was widely used to improve corrosion resistance of steel bar in reinforcement concrete structure. A kind of multi-component corrosion inhibitor, which is composed of organic and inorganic substances, was developed in this research. This corrosion inhibitor was comparatively studied with [...] Read more.
A corrosion inhibitor was widely used to improve corrosion resistance of steel bar in reinforcement concrete structure. A kind of multi-component corrosion inhibitor, which is composed of organic and inorganic substances, was developed in this research. This corrosion inhibitor was comparatively studied with various other inhibitors by using open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV) methods. The results show that the OCP values and charge transfer resistance (calculated by EIS curves) of the multi-component corrosion inhibitor remain, respectively, as high as −0.45 V and 932.19 kΩ·cm−2 after 60 days immersion, which are significantly better than other groups. Wide passivation interval and various peaks in cyclic voltammograms (CV) were applied to analyze the mechanism of adsorption (organic substance) and oxidation–reduction reactions (inorganic substance). The functional groups -OH in triethanolamine (TEA) and tri-isopropanolamine (TIPA) bond to the steel bar surface quickly, behaving as an adsorbent of organic substance in early age. An additional protective precipitate related to the reactions of Fe3+ was formed by inorganic substances (Fe2(MoO4)3 and FePO4), which is consistent with the EIS results and equivalent electrochemical circuits. As an eco-friendly substitute, multi-component corrosion inhibitors possess similar or even better protecting effects on steel bars in comparison to calcium nitrite. In addition, the concept of a “multi-functional protective film” was proposed, providing a new insight to achieve modified anti-corrosion capacity of inhibitors. Full article
(This article belongs to the Special Issue Recent Advances in Cement and Concrete Composites Materials)
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18 pages, 8365 KiB  
Article
Bond Behavior between High-Strength Rebar and Steel-Fiber-Reinforced Concrete under the Influence of the Fraction of Steel Fiber by Volume and High Temperature
by Xiaodong Li, Chengdong Lu, Yifei Cui, Lichen Zhou and Li Zheng
Appl. Sci. 2023, 13(4), 2399; https://doi.org/10.3390/app13042399 - 13 Feb 2023
Cited by 1 | Viewed by 1857
Abstract
Steel-fiber-reinforced concrete (SFRC) is a composite material made by randomly distributing short steel fibers in normal concrete (NC). In this study, central pull-out tests of 32 specimens were performed to investigate the bond behavior between high-strength rebar and SFRC under the influence of [...] Read more.
Steel-fiber-reinforced concrete (SFRC) is a composite material made by randomly distributing short steel fibers in normal concrete (NC). In this study, central pull-out tests of 32 specimens were performed to investigate the bond behavior between high-strength rebar and SFRC under the influence of the fraction of steel fiber by volume (Vf = 0%, 0.5%, 1.0% and 1.5%) and temperature (T = 20, 200, 400 and 600 °C). The results show that in NC specimens, splitting failure occurs below 400 °C, while split-pullout failure occurs above 600 °C. Split-pullout failure occurs in all SFRC specimens at each tested temperature. The bond strength between rebar and SFRC was found to decay significantly between 400 and 600 °C. The effect of Vf on the improvement in bond strength was more obvious between 400 and 600 °C than between 20 and 400 °C. The positive contribution of steel fibers to bond behavior is the construction of a rigid skeleton with coarse aggregates that can play a bridging role and effectively retard the expansion of concrete cracks. This improves the bond strength between rebar and SFRC at high temperatures. The bond–slip curve can be divided into five stages, namely the initial micro-slide phase, slip phase, splitting failure phase, stress drop phase and residual pull-out phase. A model of the bond–slip relationship between rebar and SFRC considering temperature and Vf was developed by modifying the existing model of the bond–slip relationship between rebar and NC. The model calculation results agree well with those of testing. Full article
(This article belongs to the Special Issue Recent Advances in Cement and Concrete Composites Materials)
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14 pages, 3996 KiB  
Article
Study on the Performance of Foam Concrete Prepared from Decarburized Fly Ash
by Yuanxin Guo, Chenyang Xu, Zhenwen Hu, Liang Wang, Gongbing Yue, Shidong Zheng, Qiuyi Li and Peihan Wang
Appl. Sci. 2022, 12(24), 12708; https://doi.org/10.3390/app122412708 - 11 Dec 2022
Cited by 6 | Viewed by 1646
Abstract
Although the energy structure has been gradually enriched in recent years, China, as the world’s largest producer and consumer of coal, still accounts for more than 50% of resources. Therefore, in this paper, the high carbon fly ash raw ash (HCFARA) was mechanically [...] Read more.
Although the energy structure has been gradually enriched in recent years, China, as the world’s largest producer and consumer of coal, still accounts for more than 50% of resources. Therefore, in this paper, the high carbon fly ash raw ash (HCFARA) was mechanically activated, and the flotation was treated to obtain decarburized fly ash (DFA) with a loss on ignition of 1.18%, water demand ratio of 101% and strength activity coefficient of 74.5%. With the exception of for water demand ratio, the rest meet the national requirements for the use of Class I fly ash. The foam concrete was prepared by partially replacing cement with decarburized fly ash in different proportions and at different water-to-cement ratios (0.3, 0.4 and 0.5) in order to study its dry density, porosity, compressive strength and thermal conductivity. The results show that the porosity of foam concrete grows with the increase in water-to-cement ratio and fly ash replacement rate. In addition, the dry density and thermal conductivity of the prepared foam concrete can meet the requirements of A05 grade foam concrete (Density less than 500 kg/m3, thermal conductivity less than 0.12 W/(m·k)). The compressive strength can meet the requirements of C0.3 grade foam concrete (Minimum use standard). Full article
(This article belongs to the Special Issue Recent Advances in Cement and Concrete Composites Materials)
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