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The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period

The variable frequency conductivity was applied to characterize the process of solidification of geopolymers based on fly ash with sand additives. XRD qualitative and quantitative analysis, porosity measurements, and sorption analysis of specific surface area were performed. The conductivity was cor...

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Autores principales: Walter, Janusz, Uthayakumar, Marimuthu, Balamurugan, Ponnambalam, Mierzwiński, Dariusz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8510076/
https://www.ncbi.nlm.nih.gov/pubmed/34640040
http://dx.doi.org/10.3390/ma14195648
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author Walter, Janusz
Uthayakumar, Marimuthu
Balamurugan, Ponnambalam
Mierzwiński, Dariusz
author_facet Walter, Janusz
Uthayakumar, Marimuthu
Balamurugan, Ponnambalam
Mierzwiński, Dariusz
author_sort Walter, Janusz
collection PubMed
description The variable frequency conductivity was applied to characterize the process of solidification of geopolymers based on fly ash with sand additives. XRD qualitative and quantitative analysis, porosity measurements, and sorption analysis of specific surface area were performed. The conductivity was correlated with porosity and specific surface area of geopolymer concretes. Both values of conductivity, real and imaginary parts, decreased during polymerization processing time. Characteristic maximum on graphs describing susceptance vs. frequency curve was observed. The frequency of this maximum depends on time of polymerization and ageing, and can also indicate porosity of material. Low-porous geopolymer concrete shows both low-conductivity values, and susceptance maximum frequency peak occurs more in the higher frequencies than in high-porous materials.
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spelling pubmed-85100762021-10-13 The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period Walter, Janusz Uthayakumar, Marimuthu Balamurugan, Ponnambalam Mierzwiński, Dariusz Materials (Basel) Article The variable frequency conductivity was applied to characterize the process of solidification of geopolymers based on fly ash with sand additives. XRD qualitative and quantitative analysis, porosity measurements, and sorption analysis of specific surface area were performed. The conductivity was correlated with porosity and specific surface area of geopolymer concretes. Both values of conductivity, real and imaginary parts, decreased during polymerization processing time. Characteristic maximum on graphs describing susceptance vs. frequency curve was observed. The frequency of this maximum depends on time of polymerization and ageing, and can also indicate porosity of material. Low-porous geopolymer concrete shows both low-conductivity values, and susceptance maximum frequency peak occurs more in the higher frequencies than in high-porous materials. MDPI 2021-09-28 /pmc/articles/PMC8510076/ /pubmed/34640040 http://dx.doi.org/10.3390/ma14195648 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
Walter, Janusz
Uthayakumar, Marimuthu
Balamurugan, Ponnambalam
Mierzwiński, Dariusz
The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period
title The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period
title_full The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period
title_fullStr The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period
title_full_unstemmed The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period
title_short The Variable Frequency Conductivity of Geopolymers during the Long Agieng Period
title_sort variable frequency conductivity of geopolymers during the long agieng period
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8510076/
https://www.ncbi.nlm.nih.gov/pubmed/34640040
http://dx.doi.org/10.3390/ma14195648
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