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J. Compos. Sci.
Special Issues
Nanotechnology Enhanced Smart Cementitious Materials for Green Buildings
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Nanotechnology Enhanced Smart Cementitious Materials for Green Buildings

A special issue of Journal of Composites Science (ISSN 2504-477X). This special issue belongs to the section "Nanocomposites".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 4808

Special Issue Editors

Prof. Dr. Yan Zhuge

E-Mail Website
Guest Editor
UniSA STEM, University of South Australia, Adelaide, SA 5095, Australia
Interests: sustainable concrete material; structural engineering; numerical modelling; composite and hybrid construction materials; utilisation waste into construction materials; engineering cementitious composites; FRP and composite structures
Dr. Zhenhua Duan

E-Mail Website
Guest Editor
Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
Interests: nanomaterials; recycled materials; recycled aggregate concrete; rheology; 3D-printing technology; artificial neural networks
Dr. Wahid Ferdous

E-Mail Website
Guest Editor
Centre for Future Materials (CFM), University of Southern Queensland, Toowoomba, QLD 4350, Australia
Interests: landfill waste utilisation; short fibres; fibre composites; material characterisation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Concrete is the most widely used construction material in the world. As one of the key ingredients in concrete, the total amount of cement produced worldwide in the last decade has increased by more than 20% from 3.3 to 4.1 billion tons. In addition to the heavy exploitation of natural resources as the raw materials and aggregates in concrete, another environmental cost is the energy consumed and the greenhouse gases (GHGs) released during cement production. With increasing demand and tightening environmental restrictions, the concrete industry is under pressure to consider its greenhouse gas emissions and reduce energy consumption.

From the perspective of building materials, the effective use of smart cementitious materials as alternative binders to ordinary Portland cement (OPC), or various construction wastes as alternatives to natural aggregate, can improve the sustainability of concrete, which can also be achieved through improving the durability of concrete by utilising a series of nanomaterials which have been proven effective in significantly improving the compressive and tensile strengths and fracture toughness, accelerating the hardening of cement paste and densifying pore structures of cement and concrete. This is an emerging area of research which focuses on the characterisation of inherent properties and modelling of advanced cementitious materials.

This Special Issue will address the abovementioned points in relation to nanotechnology, modification, characterisation, and properties of smart cementitious materials to offer insight into this new green concrete in order to eventually achieve the sustainability of green buildings. This Issue also accepts state-of-the-art reviews on alternative binders and technology to enhance the properties of cementitious materials.

Prof. Dr. Zhuge Yan
Dr. Zhenhua Duan
Dr. Wahid Ferdous
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. Journal of Composites Science is an international peer-reviewed open access monthly 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 1800 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

  • nanotechnology
  • smart cementitious materials
  • green buildings
  • binder
  • mechanical properties
  • durability
  • concrete
  • green materials
  • sustainability
  • micro-structure

Published Papers (3 papers)

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Research

13 pages, 4932 KiB  
Article
Estimation of Energy Harvesting by Thermoelectric Cement Composites with Nanostructured Graphene and Metallic Oxides
by Sampad Ghosh and Bidyut Baran Saha
J. Compos. Sci. 2023, 7(5), 207; https://0-doi-org.brum.beds.ac.uk/10.3390/jcs7050207 - 22 May 2023
Viewed by 1153
Abstract
The measurement of electrical power and efficiency of a thermoelectric generator (TEG) holds significant importance in the realm of thermoelectric materials research and development. The present investigation involves the measurement of thermoelectric characteristics, namely electrical conductivity, Seebeck coefficient, and thermal conductivity, of cement [...] Read more.
The measurement of electrical power and efficiency of a thermoelectric generator (TEG) holds significant importance in the realm of thermoelectric materials research and development. The present investigation involves the measurement of thermoelectric characteristics, namely electrical conductivity, Seebeck coefficient, and thermal conductivity, of cement composites containing graphene nanoplatelets and metallic oxides (Fe2O3, ZnO, MnO2). These properties are then utilized to determine the electrical power output and efficiency of the aforementioned composites. It is possible to estimate a power output of up to 1.5 W per square meter when utilizing GnP-ZnO-added cement composites, given a temperature differential of approximately 50 °C. This paper additionally discusses the methodology for fabricating a cement composite-based structural TEG module with the aim of augmenting the overall output voltage, power, and efficiency of the system. Full article
(This article belongs to the Special Issue Nanotechnology Enhanced Smart Cementitious Materials for Green Buildings)
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20 pages, 8462 KiB  
Article
Effect of Nanostructured Silica Additives on the Extrusion-Based 3D Concrete Printing Application
by Zhenbang Liu, Mingyang Li, Guo Sheng James Moo, Hitoshi Kobayashi, Teck Neng Wong and Ming Jen Tan
J. Compos. Sci. 2023, 7(5), 191; https://0-doi-org.brum.beds.ac.uk/10.3390/jcs7050191 - 08 May 2023
Cited by 5 | Viewed by 1502
Abstract
Recently, 3D printing technology has become more popular in the field of construction. For the extrusion-based 3D concrete printing (3DCP) process, the cementitious material needs to be strong and flowable enough to ensure buildability and pumpability. Nanostructured silica, a kind of additive, has [...] Read more.
Recently, 3D printing technology has become more popular in the field of construction. For the extrusion-based 3D concrete printing (3DCP) process, the cementitious material needs to be strong and flowable enough to ensure buildability and pumpability. Nanostructured silica, a kind of additive, has been used to modify the 3DCP concrete to meet these requests. However, most previous studies focused on the effect of nanostructured silica on rheological properties and failed to link the obtained rheological properties of nanostructured-silica-modified cementitious materials to the performance in 3D printing. In this paper, the 3DCP mixture based on premix cement, river sand, silica fume, and water was modified by different dosages of nanostructured silica (from 0.25% to 1.00% by the total weight of the 3DCP mixture). The effects of nanostructured silica on the rheological, hydration, printing, and microstructural properties were determined by rheological tests, stress growth tests, setting time tests, printing tests, and scanning electron microscopy (SEM) tests, respectively. This paper revealed that the nanostructured silica has a positive effect on 3DCP buildability but negatively affects the printing quality, which fits the effect of nanostructured silica on the rheological properties. Hence, the determined rheological properties can qualitatively evaluate the printing performance of nanostructured-silica-modified cementitious materials. Full article
(This article belongs to the Special Issue Nanotechnology Enhanced Smart Cementitious Materials for Green Buildings)
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11 pages, 2686 KiB  
Article
The Effects of Air-Entraining Agent on Fresh and Hardened Properties of 3D Concrete
by Ella Spurina, Maris Sinka, Krists Ziemelis, Andris Vanags and Diana Bajare
J. Compos. Sci. 2022, 6(10), 281; https://0-doi-org.brum.beds.ac.uk/10.3390/jcs6100281 - 26 Sep 2022
Cited by 4 | Viewed by 1708
Abstract
Three-dimensional concrete printing (3DCP) is becoming more common in the construction industry nowadays; however, the aspect of durability of printed concrete is not well-studied yet. Frost resistance is a very important factor for durability of concrete structures located in northern regions. Since air-entraining [...] Read more.
Three-dimensional concrete printing (3DCP) is becoming more common in the construction industry nowadays; however, the aspect of durability of printed concrete is not well-studied yet. Frost resistance is a very important factor for durability of concrete structures located in northern regions. Since air-entraining agents (AEAs) are widely used in conventional concrete, this paper focuses on exploring the potential of using AEAs in 3D concrete as well—the main objective is to determine how it affects fresh and hardened properties, including frost resistance of 3D concrete. Three different mixes were printed and cast—the dry mix consisted of ordinary Portland cement (OPC), limestone filler (LF), sand, as well as viscosity modifying agent (VMA) and superplasticizer (SP). Two mixes contained different amounts of AEA, the third one was used as reference. First, fresh state properties were tested—air content, density, and mini cone flow test. Second, 28-day compressive and flexural strength tests were carried out; bulk and particle densities were also determined. Next, both cast and printed concrete samples were subject to freeze–thaw cycles according to provisions of CEN/TS 12390-9, mass loss due to surface scaling was determined for each sample. As a result, printed concrete samples containing AEA in the amount of 0.06% of binder mass showed the highest frost resistance—addition of AEA decreased both flexural and compressive strength of this printed concrete mix by 30–40%. To conclude, the obtained results give an insight of how addition of AEA to printed concrete mix affects its properties both in long and short term. Further research of certain aspects, for instance, the air void system and pore distribution is needed to gain a deeper understanding on how to increase durability of 3D concrete. Full article
(This article belongs to the Special Issue Nanotechnology Enhanced Smart Cementitious Materials for Green Buildings)
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