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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-8510076 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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