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Coatings
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Coatings for Building Applications
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Coatings for Building Applications

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 12152

Special Issue Editors

Prof. Dr. Noni-Pagona Maravelaki

E-Mail Website
Guest Editor
School of Architecture, Technical University of Crete, 73100 Chania, Greece
Interests: stone decay and diagnosis; nanomaterials for stone and mortar conservation; conservation materials and techniques
Prof. Dr. Elisa Franzoni

E-Mail Website
Guest Editor
Department of Civil, Chemical, Environmental and Materials Engineering (DICAM), University of Bologna, 40131 Bologna, Italy
Interests: materials for cultural heritage; innovative consolidating materials and protective coatings; rising damp; new materials for masonry repair

Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work to this Special Issue of Coatings entitled “Coatings for Building Applications”.

The protection of buildings with smart coatings has long been a challenge for the coating industry, due to the impact of pollutants and synergism of climate parameters, intensively affecting the building façade. Into this framework, research activities were addressed and focused on self-cleaning, hydrophobic, and super-hydrophobic coatings, exhibiting durability to the environmental loading and compatibility to the building substrate. Recent advantages in nanoscience have resulted in the establishment of smart materials with multifunctional properties, such as self-cleaning, self-healing, antifungal, biocidal, super-hydrophobic, anti-graffiti, breathable paints, energy-efficient paints, renders with nano-additives, etc. Nanostructured coatings could accomplish more than one of the above-mentioned desired functionalities and therefore could be considered as powerful suggestions for building protection and a clean environment. In this Special Issue, contributions on the above topics will be welcomed, and authors are encouraged to submit their works concerning inorganic and organic coatings with specific properties addressing both building and environment protection.

The topics of interest include but are not limited to the following:

  • Photocatalytic and self-cleaning coatings;
  • Hydrophobic, super-hydrophobic, and water/oil repellent actions;
  • Coatings with biocidal and antifungal functions;
  • Anti-graffiti properties;
  • Energy-efficient paints;
  • Renders with nano-additives;
  • Coatings with CO2 sequestration action.

Prof. Noni-Pagona Maravelaki
Prof. Elisa Franzoni
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. Coatings 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.

Published Papers (5 papers)

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Research

31 pages, 7464 KiB  
Article
Selection of PEG-Matrix Combinations to Achieve High Performance Form-Stable Phase Change Materials for Building Applications
by Antonella Sarcinella and Mariaenrica Frigione
Coatings 2024, 14(3), 250; https://doi.org/10.3390/coatings14030250 - 20 Feb 2024
Viewed by 875
Abstract
The construction sector’s pursuit of sustainability, driven by growing concerns about climate change and resource depletion, requires innovative solutions to reduce the energy consumption necessary to ensure thermal comfort in buildings. The introduction of phase change materials (PCMs) in construction elements represents an [...] Read more.
The construction sector’s pursuit of sustainability, driven by growing concerns about climate change and resource depletion, requires innovative solutions to reduce the energy consumption necessary to ensure thermal comfort in buildings. The introduction of phase change materials (PCMs) in construction elements represents an effective solution to these problems. PCMs are, in fact, able to regulate internal temperature by storing and releasing thermal energy during their phase transitions. In particular, polyethylene glycol (PEG)-based organic PCMs offer high heat storage capacity, compatibility with building materials, and minimal environmental impact. They are often used in building applications incorporated in an inert matrix, using the “form-stable method”. This article critically examines various matrices proposed in the existing literature to realize PEG-based PCMs, with the aim of analyzing their influence on the final characteristics of any PCM. In addition, an attempt to correlate the quantity of PEG with the heat stored and released by the PCM is presented, using a linear regression model applied to groups of matrices of the same chemical nature. The results of these analyses would, in fact, provide useful indications for an optimal choice of the PEG/matrix system capable of responding to specific application needs, particularly in the building sector. Full article
(This article belongs to the Special Issue Coatings for Building Applications)
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17 pages, 3966 KiB  
Article
Splitting Tensile Test of ECC Functional Gradient Concrete with PVA Fiber Admixture
by Yin Xu, Qiang Liu, Xiaoqiang Zhang, Xiaofeng Xu and Peng Liu
Coatings 2024, 14(2), 231; https://doi.org/10.3390/coatings14020231 - 17 Feb 2024
Viewed by 720
Abstract
Engineered cementitious composite (ECC) functional gradient concrete has a promising application future, and its mechanical features are piquing the interest of researchers. The impacts of this strength class of concrete, interface reinforcement technique, ECC thickness (i.e., fiber dosage), and other factors on the [...] Read more.
Engineered cementitious composite (ECC) functional gradient concrete has a promising application future, and its mechanical features are piquing the interest of researchers. The impacts of this strength class of concrete, interface reinforcement technique, ECC thickness (i.e., fiber dosage), and other factors on the splitting tensile strength qualities are explored using an experimental investigation of functional gradient concrete. The splitting tensile tests of 150 mm × 150 mm × 150 mm functional gradient concrete specimens were used to explore the link between concrete strength grade, interface reinforcing technique, and ECC thickness with polyvinyl alcohol (PVA) fiber additive and functional gradient concrete. The test results show that the splitting tensile strength of functional gradient concrete increases as the concrete strength grade increases; different interfacial treatments have a significant effect on the splitting tensile strength of functional gradient concrete; and the effect of ECC thickness change on the splitting tensile strength of functional gradient concrete shows different trends, which research can be used as an experimental reference for functional gradient concrete engineering applications. Full article
(This article belongs to the Special Issue Coatings for Building Applications)
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11 pages, 3551 KiB  
Article
Evaluation of the Performance and Durability of Self-Cleaning Treatments Based on TiO2 Nanoparticles Applied to Cement-Based Renders and Boards
by Alberto Fregni, Luca Venturi and Elisa Franzoni
Coatings 2023, 13(6), 990; https://doi.org/10.3390/coatings13060990 - 26 May 2023
Viewed by 1110
Abstract
Photocatalytic coatings based on TiO2 nanoparticles have been applied to building materials over the past few decades, following encouraging results obtained by many laboratory studies and a few onsite testing campaigns showing their self-cleaning, antimicrobial and depolluting performance. However, these results clearly [...] Read more.
Photocatalytic coatings based on TiO2 nanoparticles have been applied to building materials over the past few decades, following encouraging results obtained by many laboratory studies and a few onsite testing campaigns showing their self-cleaning, antimicrobial and depolluting performance. However, these results clearly point out the need for a deeper understanding of the effectiveness of TiO2-based treatments when applied over different substrates and their durability when exposed to an outdoor environment. The present paper investigates the behavior of a nanodispersion of titania nanoparticles applied to cement-based substrates. Cementitious materials are widely used in building façades, roofs, structures, roads and tunnels; hence, any improvement in their performance and/or the introduction of new and unique functionalities have potentially a very high impact on everyday life. A TiO2 nanodispersion was applied by brushing and spraying on three cement-based substrates (a render, a prefabricated board and a painted prefabricated board), investigating its photocatalytic activity. Then, the samples were subjected to two artificially weathering procedures, involving rain washout and UV light exposure, and the changes in terms of the photocatalytic activity and contact angle were measured. The results suggest that the nature of the substrate plays a key role in the performance of the coating and that weathering has a significant impact too. Full article
(This article belongs to the Special Issue Coatings for Building Applications)
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18 pages, 7054 KiB  
Article
Colored Paints Containing NIR-Reflective Pigments Exposed to Accelerated Ultraviolet Radiation Aging with Possible Application as Roof Coatings
by Stefano Rossi, Hampus Lindmark and Michele Fedel
Coatings 2020, 10(11), 1135; https://doi.org/10.3390/coatings10111135 - 23 Nov 2020
Cited by 8 | Viewed by 4690
Abstract
This study aims to evaluate the difference in thermal behavior among paints with the presence of traditional and NIR pigments by means of a simple and cheap laboratory-scale test. Considering these goals, the thermal and esthetical properties of two different cool coatings were [...] Read more.
This study aims to evaluate the difference in thermal behavior among paints with the presence of traditional and NIR pigments by means of a simple and cheap laboratory-scale test. Considering these goals, the thermal and esthetical properties of two different cool coatings were assessed, highlighting their positive and limited aspects. Two different complex near-infrared inorganic reflective (NIR) pigments with yellow and black respectably colors were mixed in an acrylic waterborne copolymer binder. The paint formulations were applied on steel panels. The thermal performance of the coatings was investigated in the NIR-region of the light spectrum by exposing the samples to an IR-lamp. The outer and inner surface temperatures of the painted panels were recorded using thermocouples and an IR camera. The samples were aged by artificial UV-B light exposure. Color and specular gloss changes at different exposure times were evaluated. The behavior of the cool coatings was compared with that of conventional coatings with similar color characteristics. The black cool coating achieved a maximum temperature decrease, compared to the conventional black one, of approximately 12 °C. The stability for the cool coatings was very similar to that of the conventional coating, indicating that black pigment could be a potential candidate for cool-coating applications. The yellow cool coatings did not show a significant decrease in temperature compared to the conventional paint. The gloss and color changes resulted as influenced by the types and amount of pigments. Full article
(This article belongs to the Special Issue Coatings for Building Applications)
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8 pages, 2364 KiB  
Communication
A Pragmatic and High-Performance Radiative Cooling Coating with Near-Ideal Selective Emissive Spectrum for Passive Cooling
by Mingxue Chen, Wenqing Li, Shuang Tao, Zhenggang Fang, Chunhua Lu and Zhongzi Xu
Coatings 2020, 10(2), 144; https://doi.org/10.3390/coatings10020144 - 5 Feb 2020
Cited by 13 | Viewed by 3889
Abstract
Radiative cooling is a passive cooling technology that can cool a space without any external energy by reflecting sunlight and radiating heat to the universe. Current reported radiative cooling techniques can present good outside test results, however, manufacturing an efficient radiative material which [...] Read more.
Radiative cooling is a passive cooling technology that can cool a space without any external energy by reflecting sunlight and radiating heat to the universe. Current reported radiative cooling techniques can present good outside test results, however, manufacturing an efficient radiative material which can be applied to the market for large-scale application is still a huge challenge. Here, an effective radiative cooling coating with a near-ideal selective emissive spectrum is prepared based on the molecular vibrations of SiOx, mica, rare earth silicate, and molybdate functional nanoparticles. The radiative cooling coating can theoretically cool 45 °C below the ambient temperature in the nighttime. Polyethylene terephthalate (PET) aluminized film was selected as the coating substrate for its flexibility, low cost, and extensive production. As opposed to the usual investigations that measure the substrate temperature, the radiative cooling coating was made into a cubic box to test its space cooling performance on a rooftop. Results showed that a temperature reduction of 4 ± 0.5 °C was obtained in the nighttime and 1 ± 0.2 °C was achieved in the daytime. Furthermore, the radiative cooling coating is resistant to weathering, fouling, and ultraviolet radiation, and is capable of self-cleaning due to its hydrophobicity. This practical coating may have a significant impact on global energy consumption. Full article
(This article belongs to the Special Issue Coatings for Building Applications)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Planned paper 1:

Title: Evaluation of the performance and durability of self-cleaning TiO2 treatments applied to cement-based renders

Authors: Alberto Fregni, Luca Venturi, Elisa Franzoni *

Affiliations: Department of Civil, Chemical, Environmental & Materials Engineering (DICAM), University of Bologna, Italy

Abstract:

The application of photocatalytic coatings based on TiO2 nanoparticles to building materials has diffused over last decades, following the encouraging results obtained in many laboratory studies and in a number of in-the-field testing campaigns on the self-cleaning, antimicrobial and depolluting performances provided by these coatings. However, the results clearly point out the need of a deeper understanding of the effectiveness of TiO2-based treatments when applied over different substrates and their durability when exposed to outdoor environment.

The present paper investigates the behaviour of a nanodispersion of titania nanoparticles applied to cement-based substrates. Cementitious materials are widely used in building façades, roofs, structures, roads, and tunnels, hence any improvement in their performance and/or introduction of new and unique functionalities have potentially a very high impact on our everyday life. The TiO2 nanodispersion was applied with different techniques (brushing and spraying) on three cement-based substrates (a render, a prefabricated board and a painted prefabricated board), investigating its photocatalytic activity. Then, the samples were subjected to two artificially weathering procedures, involving rain washout and UV-light exposure, and the changes in terms of photocatalytic activity and contact angle were measured. The results suggest that the nature of the substrate plays a key role in the performance of the coating and that weathering as a significant role as well.

 

 

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