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Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass

Geopolymers can be treated as an environmentally friendly alternative for concrete and enables utilization of various wastes. This paper focuses on the possibility of application of discarded cathode ray tube (CRT) glass inside a metakaolin-based geopolymer in the form of an aggregate, providing an...

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Autores principales: Górski, Marcin, Wielgus, Natalia, Loska, Krzysztof, Kozioł, Michał, Landrat, Marcin, Ścierski, Waldemar, Pikoń, Krzysztof
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8038402/
https://www.ncbi.nlm.nih.gov/pubmed/33916653
http://dx.doi.org/10.3390/polym13071149
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author Górski, Marcin
Wielgus, Natalia
Loska, Krzysztof
Kozioł, Michał
Landrat, Marcin
Ścierski, Waldemar
Pikoń, Krzysztof
author_facet Górski, Marcin
Wielgus, Natalia
Loska, Krzysztof
Kozioł, Michał
Landrat, Marcin
Ścierski, Waldemar
Pikoń, Krzysztof
author_sort Górski, Marcin
collection PubMed
description Geopolymers can be treated as an environmentally friendly alternative for concrete and enables utilization of various wastes. This paper focuses on the possibility of application of discarded cathode ray tube (CRT) glass inside a metakaolin-based geopolymer in the form of an aggregate, providing an ecological method of recycling of this hazardous material. The main goal of this paper was to develop an optimal composition of a new geopolymer and to describe its behavior under varying curing conditions. A geopolymer made of different mixtures was subjected to flexural and compressive strength tests. The density, mass loss, temperature changes, and metals leaching were determined as well. The results demonstrated that neither the content of CRT glass nor the curing regime has a significant influence on the mechanical behavior. However, the strength of the geopolymer containing 50% CRT glass by mass increased with time in contrast to a geopolymer with a higher CRT glass content. The development of temperature inside the mixture was dependent on the amount of metakaolin. The concentration of toxic metals in an aqueous extract decreased considerably after the encapsulation of CRT glass inside the geopolymer. The presented results indicate that discarded CRT glass can be considered an aggregate for a metakaolin-based geopolymer. The new material shows high strength and makes the CRT glass safe for the environment.
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spelling pubmed-80384022021-04-12 Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass Górski, Marcin Wielgus, Natalia Loska, Krzysztof Kozioł, Michał Landrat, Marcin Ścierski, Waldemar Pikoń, Krzysztof Polymers (Basel) Article Geopolymers can be treated as an environmentally friendly alternative for concrete and enables utilization of various wastes. This paper focuses on the possibility of application of discarded cathode ray tube (CRT) glass inside a metakaolin-based geopolymer in the form of an aggregate, providing an ecological method of recycling of this hazardous material. The main goal of this paper was to develop an optimal composition of a new geopolymer and to describe its behavior under varying curing conditions. A geopolymer made of different mixtures was subjected to flexural and compressive strength tests. The density, mass loss, temperature changes, and metals leaching were determined as well. The results demonstrated that neither the content of CRT glass nor the curing regime has a significant influence on the mechanical behavior. However, the strength of the geopolymer containing 50% CRT glass by mass increased with time in contrast to a geopolymer with a higher CRT glass content. The development of temperature inside the mixture was dependent on the amount of metakaolin. The concentration of toxic metals in an aqueous extract decreased considerably after the encapsulation of CRT glass inside the geopolymer. The presented results indicate that discarded CRT glass can be considered an aggregate for a metakaolin-based geopolymer. The new material shows high strength and makes the CRT glass safe for the environment. MDPI 2021-04-03 /pmc/articles/PMC8038402/ /pubmed/33916653 http://dx.doi.org/10.3390/polym13071149 Text en © 2021 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
Górski, Marcin
Wielgus, Natalia
Loska, Krzysztof
Kozioł, Michał
Landrat, Marcin
Ścierski, Waldemar
Pikoń, Krzysztof
Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass
title Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass
title_full Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass
title_fullStr Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass
title_full_unstemmed Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass
title_short Characteristics of Metakaolin-Based Geopolymer with Cathode Ray Tube Glass
title_sort characteristics of metakaolin-based geopolymer with cathode ray tube glass
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8038402/
https://www.ncbi.nlm.nih.gov/pubmed/33916653
http://dx.doi.org/10.3390/polym13071149
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