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Buildings
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Advanced Research on Construction Materials for Sustainable Built Environment
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Advanced Research on Construction Materials for Sustainable Built Environment

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Materials, and Repair & Renovation".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 1535

Special Issue Editors

Prof. Dr. Jian-Guo Dai

E-Mail Website
Guest Editor
Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon 518057, Hong Kong
Interests: FRP composites; concrete; geopolymer; fiber-reinforced concrete; surface coating
Dr. Mehran Khan

E-Mail Website
Guest Editor
School of Civil Engineering, University College Dublin, Dublin 4, Ireland
Interests: sustainable construction materials; multi-scale fiber-reinforced composites; computational modelling of hybrid fiber concrete; structural and fire engineering performance; waste-derived 3D printing concrete
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Developing the infrastructure and buildings system that supports our living environment and societal economy involves the extensive use of various construction materials. It is needless to say that construction materials underpin our whole society, and continued development and applications of advanced construction materials are of paramount importance to the sustainability of the built environment. In particular, modern buildings and infrastructure, especially those exposed to critical loading or environmental actions, need to be more innovative, sustainable, energy-efficient, and resilient, which require a new generation of construction materials that exhibit exceptional properties (e.g., highly durable, environmentally friendly, specifically functioned, aesthetically pleasing). Modern construction materials also need to meet the changes of construction technologies (e.g., prefabrication and digitalized construction) to shorten construction time and improve productivity. In addition, the evolution of construction materials is always a considerable driving force for civil engineering development. The gradual adoption of the life-cycle design concept for buildings and civil infrastructure also makes advanced construction materials a key area of interest and importance.

The purpose of this Special Issue is to create a collection of papers on advanced construction materials for improving the sustainability of the built environment. The topics of interest include, but are not limited to, the following: low-carbon cement binders, low- and negative-carbon concrete, ultra high-performance concrete, digital concrete, fiber-reinforced cementitious composites, fiber-reinforced polymer composites, high-performance steel, multiple functional coating.

We look forward to receiving your contributions.

Prof. Dr. Jian-Guo Dai
Dr. Mehran Khan
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. Buildings 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 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

  • concrete structures
  • FRP composites
  • high-performance/ultra-high-performance concrete
  • geopolymer concrete
  • surface protection

Published Papers (2 papers)

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Research

25 pages, 12878 KiB  
Article
Effect of Precursor Blending Ratio and Rotation Speed of Mechanically Activated Fly Ash on Properties of Geopolymer Foam Concrete
by Xuan Liu, Tao Jiang, Chenglong Li, Mingyu Wan, Wenzhu Xuan and Xingfu Wang
Buildings 2024, 14(3), 841; https://doi.org/10.3390/buildings14030841 - 20 Mar 2024
Viewed by 642
Abstract
This research used fly ash and slag to create geopolymer foam concrete. They were activated with an alkali, resulting in a chemical reaction that produced a gel that strengthened the concrete’s structural integrity. The experimental approach involved varying the fly ash content in [...] Read more.
This research used fly ash and slag to create geopolymer foam concrete. They were activated with an alkali, resulting in a chemical reaction that produced a gel that strengthened the concrete’s structural integrity. The experimental approach involved varying the fly ash content in the precursors at incremental percentages (10%, 30%, 50%, 70% and 90%) and subjecting the fly ash to mechanical activation through a planetary ball mill at distinct rotational speeds (380, 400, 420 and 440 rpm). The investigation discerned that the fly ash content and particle structure exert a discernible influence on macroscopic properties, including flowability, air generation height, compressive strength, dry density and microstructural characteristics such as pore distribution and hydration product arrangement in the geopolymer foam concrete. Employing analytical techniques such as X-ray diffraction (XRD) and scanning electron microscopy (SEM), it was deduced that diminishing the fly ash content correlates with an enhancement in compressive strength. Furthermore, the specific strength of the geopolymer foam concrete reached a peak of 0.041 when the activated fly ash in the planetary ball mill rotated at 420 rpm, manifesting a lightweight and high-strength outcome. Full article
(This article belongs to the Special Issue Advanced Research on Construction Materials for Sustainable Built Environment)
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22 pages, 10279 KiB  
Article
Evaluating Sustainable Colored Mortars Reinforced with Fly Ash: A Comprehensive Study on Physical and Mechanical Properties under High-Temperature Exposure
by Zehra Funda Akbulut, Soner Guler, Faruk Osmanoğlu, Mehmet Rıza Kıvanç and Mehran Khan
Buildings 2024, 14(2), 453; https://doi.org/10.3390/buildings14020453 - 06 Feb 2024
Cited by 2 | Viewed by 598
Abstract
This research primarily delves into a comprehensive investigation concerning the synergistic effects of fly ash (FA) with yellow pigment (YP) and red pigment (RP) in the workability, physical characteristics, and mechanical properties of colored mortars, both pre-and post-exposure to high temperatures. Within the [...] Read more.
This research primarily delves into a comprehensive investigation concerning the synergistic effects of fly ash (FA) with yellow pigment (YP) and red pigment (RP) in the workability, physical characteristics, and mechanical properties of colored mortars, both pre-and post-exposure to high temperatures. Within the experimental design, FA was employed as a 20% substitute for cement, while YP and RP were systematically incorporated into the cement mixtures at varying concentrations (1%, 3%, and 5% by weight). The specimens underwent controlled exposure to high temperatures, ranging from 300 °C to 800 °C. This study’s outcomes unveiled that while the introduction of FA positively influenced mortar workability, including YP and RP adversely impacted spreading diameters (SD), resulting in a discernible reduction in overall workability. Despite these effects, FA emerged as a pivotal factor to enhancing the residual compressive strength (RCS) and residual flexural strength (RFS) of the colored mortars. For instance, after 90 days at 800 °C, the control concrete (R0) exhibited a notable 66.13% decrease in RCS, and the sample solely incorporating FA (R1) demonstrated a reduced reduction of 55.39%. Similarly, mortars with YP additives (R2–R4) and RP additives (R5–R7) showcased RCS reductions within the range of 53.32% to 55.12% and 54.51% to 56.04%, respectively. Full article
(This article belongs to the Special Issue Advanced Research on Construction Materials for Sustainable Built Environment)
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