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Applied Sciences
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Modern Cement-Based Materials
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Modern Cement-Based Materials

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

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 6189

Special Issue Editor

Prof. Dr. Chul-Woo Chung

E-Mail Website
Guest Editor
Department of Architectural Engineering, Pukyong National University, Yongso-ro 45, Nam-gu, Busan 48513, Korea
Interests: cement; concrete; waste solidification; irradiation and shielding; CO2 emissions; nanomaterials

Special Issue Information

Dear Colleagues，

The papers in this Special Issue will focus on introducing brand new types of cement-based materials utilizing state-of-the-art ingredients and technology. 

Suggested topics for papers include but are not limited to:

  • Rheological modification of concrete for automated concrete production (concrete pumping technology for high-rise building construction, 3D printing technology, etc.);
  • Utilization of nanomaterials (carbon nanotubes, graphene, other types of inorganic materials, nano-sized waste materials, etc.);
  • Functional concrete for special purposes (energy harvesting, conductive concrete, durable porous concrete, high strength ultra-lightweight concrete, etc.);
  • The sustainability of material technology and its impacts on the environment (strategies to reduce floating particle matter, air pollution, CO2 emissions, etc.);
  • Other advanced (unconventional) types of cement-based materials.

Prof. Dr. Chul-Woo Chung
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

  • cement-based materials
  • automated concrete production
  • nanomaterials
  • functionality
  • sustainability

Published Papers (3 papers)

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Research

12 pages, 16030 KiB  
Article
The Influence of the Hybridization of Steel and Polyolefin Fiber on the Mechanical Properties of Base Concrete Designed for Marine Shotcreting Purposes
by Chang Joon Lee, Andres Salas Montoya, Hoon Moon, Hyunwook Kim and Chul-Woo Chung
Appl. Sci. 2021, 11(20), 9456; https://0-doi-org.brum.beds.ac.uk/10.3390/app11209456 - 12 Oct 2021
Viewed by 1173
Abstract
The present study investigated the influence of the hybridization of steel and polyolefin fiber on the mechanical performance and chloride ion penetration of base concrete designed for marine shotcreting purposes. The purpose of fiber hybridization is to reduce the risk of corrosion that [...] Read more.
The present study investigated the influence of the hybridization of steel and polyolefin fiber on the mechanical performance and chloride ion penetration of base concrete designed for marine shotcreting purposes. The purpose of fiber hybridization is to reduce the risk of corrosion that might occur during service life. Sets of hybrid fiber reinforced base concrete, whose water to binder ratio was 0.338, were prepared. The fiber contents in the base concrete were 0.54 and 1.08 vol%, and the volume proportion of polyolefin fiber in the hybrid fiber varied from 0 to 100%. Although the effect of fiber hybridization was not clearly observed from the compressive strength, a synergetic effect which increased both the flexural strength and toughness occurred at a fiber content of 1.08 vol%. The optimum ratio of steel and polyolefin fiber was 50:50. With respect to chloride ion penetration, an increasing amount of steel fiber increased the amount of current passing through the base concrete specimen due to the presence of electrically conductive steel fiber. However, chloride ion diffusivity was not greatly affected by the presence of steel fiber. Full article
(This article belongs to the Special Issue Modern Cement-Based Materials)
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14 pages, 9833 KiB  
Article
Sulfuric Acid Resistance of CNT-Cementitious Composites
by Gun-Cheol Lee, Youngmin Kim, Soo-Yeon Seo, Hyun-Do Yun and Seongwon Hong
Appl. Sci. 2021, 11(5), 2226; https://0-doi-org.brum.beds.ac.uk/10.3390/app11052226 - 03 Mar 2021
Cited by 3 | Viewed by 1924
Abstract
This study analyzed changes in the durability characteristics of cement mortar incorporating carbon nanotube (CNT) and the electrical properties subjected to deterioration induced by sulfate attack. Powder types of multi-walled or single-walled CNTs were used and added to the composites with 1.0% and [...] Read more.
This study analyzed changes in the durability characteristics of cement mortar incorporating carbon nanotube (CNT) and the electrical properties subjected to deterioration induced by sulfate attack. Powder types of multi-walled or single-walled CNTs were used and added to the composites with 1.0% and 2.0% mass fraction, and the specimens were immersed in 5% and 10% sulfuric acid solutions to investigate the durability of CNT cementitious composites. Although mechanical performance decreased due to relatively large pores (370–80 μm) caused by CNTs, specimens incorporating CNTs exhibited enhanced resistance to sulfuric acid as CNTs, which offered strong resistance to acid corrosion, and prevented contact between the cement hydrate and the sulfuric acid solution. Therefore, it is expected that self-sensing performance was exhibited because there were no significant differences in the electrical properties of cement mortar subjected to the deterioration by sulfate attack. Full article
(This article belongs to the Special Issue Modern Cement-Based Materials)
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15 pages, 2845 KiB  
Article
Effect of Nano-Silica on the Autogenous Shrinkage, Strength, and Hydration Heat of Ultra-High Strength Concrete
by Guang-Zhu Zhang, Hyeong-Kyu Cho and Xiao-Yong Wang
Appl. Sci. 2020, 10(15), 5202; https://0-doi-org.brum.beds.ac.uk/10.3390/app10155202 - 28 Jul 2020
Cited by 19 | Viewed by 2574
Abstract
In this paper, the effect of nano-silica on the autogenous shrinkage, hydration heat, compressive strength hydration products of Ultra-High Strength Concrete (UHSC) is studied. The water/binder ratio (w/b) of UHSC is 0.2. The nano-silica replaces 2% and 4% of the mass fraction of [...] Read more.
In this paper, the effect of nano-silica on the autogenous shrinkage, hydration heat, compressive strength hydration products of Ultra-High Strength Concrete (UHSC) is studied. The water/binder ratio (w/b) of UHSC is 0.2. The nano-silica replaces 2% and 4% of the mass fraction of the cement in UHSCs, respectively. A new instrument was developed to simultaneously measure the autogenous shrinkage, internal relative humidity, and internal temperature of UHSC. The following results were obtained from the analysis of the experimental data: (1) The trends in the autogenous shrinking of UHSC can be divided into two stages, which are the variable temperature stage and the room temperature stage. The dividing point between the two stages occurs at the age of approximately 2 days. During the room temperature stage, the internal relative humidity and autogenous shrinkage showed a good linear relationship. (2) The compressive strength of UHSC increased significantly with the increase of nano-silica content at 3 days, 7 days, and 28 days. (3) The total accumulated heat of UHSC increased during the 72 h, with the increasing of nano-silica content. (4) The XRD data at the age of 28 days showed that the Ca(OH)2 peaks of nS2 and nS4 have a tendency to weaken due to the pozzolanic reaction, compared with the peak of nS0. Full article
(This article belongs to the Special Issue Modern Cement-Based Materials)
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