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Low-Density Geopolymer Composites for the Construction Industry

The article presents preliminary results in studying reinforced and light-weight geopolymers, which can be employed in buildings, especially for walling. Such materials are very promising for the construction industry having great potential due to their favorable properties such as high mechanical s...

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Autores principales: Nguyen, Van Vu, Le, Van Su, Louda, Petr, Szczypiński, Michał Marek, Ercoli, Roberto, Růžek, Vojtěch, Łoś, Piotr, Prałat, Karol, Plaskota, Przemysław, Pacyniak, Tadeusz, Buczkowska, Katarzyna Ewa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8781880/
https://www.ncbi.nlm.nih.gov/pubmed/35054711
http://dx.doi.org/10.3390/polym14020304
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author Nguyen, Van Vu
Le, Van Su
Louda, Petr
Szczypiński, Michał Marek
Ercoli, Roberto
Růžek, Vojtěch
Łoś, Piotr
Prałat, Karol
Plaskota, Przemysław
Pacyniak, Tadeusz
Buczkowska, Katarzyna Ewa
author_facet Nguyen, Van Vu
Le, Van Su
Louda, Petr
Szczypiński, Michał Marek
Ercoli, Roberto
Růžek, Vojtěch
Łoś, Piotr
Prałat, Karol
Plaskota, Przemysław
Pacyniak, Tadeusz
Buczkowska, Katarzyna Ewa
author_sort Nguyen, Van Vu
collection PubMed
description The article presents preliminary results in studying reinforced and light-weight geopolymers, which can be employed in buildings, especially for walling. Such materials are very promising for the construction industry having great potential due to their favorable properties such as high mechanical strengths, low thermal conductivity, and low density. Moreover, they also exhibit several advantages from an economic and ecological point of view. The present study exanimated the use of specific fillers for the metakaolin-based light-weight geopolymers, emphasizing the above-mentioned physical properties. This research also investigated the electromagnetic shielding ability of the carbon grid built into the light-weight geopolymer structure. According to the study, the most suitable materials to be used as fillers are polystyrenes, along with hollow ceramic microsphere and Liapor. The polystyrene geopolymer (GPP) achieves five times lower thermal conductivity compared to cement concretes, which means five times lower heat loss by conduction. Furthermore, GPP is 28% lighter than the standard geopolymer composite. Although the achieved flexural strength of GPP is high enough, the compressive strength of GPP is only 12 MPa. This can be seen as a compromise of using polystyrene as a filler. At the same time, the results indicate that Liapor and hollow ceramic microsphere are also suitable fillers. They led to better mechanical strengths of geopolymer composites but also heavier and higher thermal conductivity compared to GPP. The results further show that the carbon grid not only enhances the mechanical performances of the geopolymer composites but also reduces the electromagnetic field. Carbon grids with grid sizes of 10 mm × 15 mm and 21 mm × 21 mm can reduce around 60% of the Wi-Fi emissions when 2 m away from the signal transmitter. Moreover, the Wi-Fi emission was blocked when the signal transmitter was at a distance of 6 m.
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spelling pubmed-87818802022-01-22 Low-Density Geopolymer Composites for the Construction Industry Nguyen, Van Vu Le, Van Su Louda, Petr Szczypiński, Michał Marek Ercoli, Roberto Růžek, Vojtěch Łoś, Piotr Prałat, Karol Plaskota, Przemysław Pacyniak, Tadeusz Buczkowska, Katarzyna Ewa Polymers (Basel) Article The article presents preliminary results in studying reinforced and light-weight geopolymers, which can be employed in buildings, especially for walling. Such materials are very promising for the construction industry having great potential due to their favorable properties such as high mechanical strengths, low thermal conductivity, and low density. Moreover, they also exhibit several advantages from an economic and ecological point of view. The present study exanimated the use of specific fillers for the metakaolin-based light-weight geopolymers, emphasizing the above-mentioned physical properties. This research also investigated the electromagnetic shielding ability of the carbon grid built into the light-weight geopolymer structure. According to the study, the most suitable materials to be used as fillers are polystyrenes, along with hollow ceramic microsphere and Liapor. The polystyrene geopolymer (GPP) achieves five times lower thermal conductivity compared to cement concretes, which means five times lower heat loss by conduction. Furthermore, GPP is 28% lighter than the standard geopolymer composite. Although the achieved flexural strength of GPP is high enough, the compressive strength of GPP is only 12 MPa. This can be seen as a compromise of using polystyrene as a filler. At the same time, the results indicate that Liapor and hollow ceramic microsphere are also suitable fillers. They led to better mechanical strengths of geopolymer composites but also heavier and higher thermal conductivity compared to GPP. The results further show that the carbon grid not only enhances the mechanical performances of the geopolymer composites but also reduces the electromagnetic field. Carbon grids with grid sizes of 10 mm × 15 mm and 21 mm × 21 mm can reduce around 60% of the Wi-Fi emissions when 2 m away from the signal transmitter. Moreover, the Wi-Fi emission was blocked when the signal transmitter was at a distance of 6 m. MDPI 2022-01-13 /pmc/articles/PMC8781880/ /pubmed/35054711 http://dx.doi.org/10.3390/polym14020304 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nguyen, Van Vu
Le, Van Su
Louda, Petr
Szczypiński, Michał Marek
Ercoli, Roberto
Růžek, Vojtěch
Łoś, Piotr
Prałat, Karol
Plaskota, Przemysław
Pacyniak, Tadeusz
Buczkowska, Katarzyna Ewa
Low-Density Geopolymer Composites for the Construction Industry
title Low-Density Geopolymer Composites for the Construction Industry
title_full Low-Density Geopolymer Composites for the Construction Industry
title_fullStr Low-Density Geopolymer Composites for the Construction Industry
title_full_unstemmed Low-Density Geopolymer Composites for the Construction Industry
title_short Low-Density Geopolymer Composites for the Construction Industry
title_sort low-density geopolymer composites for the construction industry
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8781880/
https://www.ncbi.nlm.nih.gov/pubmed/35054711
http://dx.doi.org/10.3390/polym14020304
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