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Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method
The purpose of the present study was to determine the impact of image quality on the results of air void system parameters determination in air-entrained concretes. The focus was on technical aspects related to the preparation of the scanned image of the concrete surface, which was then subjected to...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7014259/ https://www.ncbi.nlm.nih.gov/pubmed/31963281 http://dx.doi.org/10.3390/ma13020428 |
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author | Molendowska, Agnieszka Wawrzeńczyk, Jerzy Kowalczyk, Henryk |
author_facet | Molendowska, Agnieszka Wawrzeńczyk, Jerzy Kowalczyk, Henryk |
author_sort | Molendowska, Agnieszka |
collection | PubMed |
description | The purpose of the present study was to determine the impact of image quality on the results of air void system parameters determination in air-entrained concretes. The focus was on technical aspects related to the preparation of the scanned image of the concrete surface, which was then subjected to 2D surface analysis. Image processing aimed at separating joined voids and removing various types of defects in aggregate and cement mortar. The specific surface of the voids was determined with the air void equivalent diameter or perimeter as the calculation basis. Applying the Schwartz–Saltykov method, the 3D distribution of the air voids was reconstructed based on 2D measurements. On this basis, the micro-air content A300 was determined. The results of the 2D method were compared with the results of determinations carried out using the linear traverse (1D) method according to EN 480-11. The tests confirm the need to correct the image prior to measurements. Comparative tests showed good agreement between the air void system parameters determined using the 2D analysis and the EN 480-11 chord length counting method. |
format | Online Article Text |
id | pubmed-7014259 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70142592020-03-09 Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method Molendowska, Agnieszka Wawrzeńczyk, Jerzy Kowalczyk, Henryk Materials (Basel) Article The purpose of the present study was to determine the impact of image quality on the results of air void system parameters determination in air-entrained concretes. The focus was on technical aspects related to the preparation of the scanned image of the concrete surface, which was then subjected to 2D surface analysis. Image processing aimed at separating joined voids and removing various types of defects in aggregate and cement mortar. The specific surface of the voids was determined with the air void equivalent diameter or perimeter as the calculation basis. Applying the Schwartz–Saltykov method, the 3D distribution of the air voids was reconstructed based on 2D measurements. On this basis, the micro-air content A300 was determined. The results of the 2D method were compared with the results of determinations carried out using the linear traverse (1D) method according to EN 480-11. The tests confirm the need to correct the image prior to measurements. Comparative tests showed good agreement between the air void system parameters determined using the 2D analysis and the EN 480-11 chord length counting method. MDPI 2020-01-16 /pmc/articles/PMC7014259/ /pubmed/31963281 http://dx.doi.org/10.3390/ma13020428 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Molendowska, Agnieszka Wawrzeńczyk, Jerzy Kowalczyk, Henryk Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method |
title | Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method |
title_full | Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method |
title_fullStr | Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method |
title_full_unstemmed | Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method |
title_short | Development of the Measuring Techniques for Estimating the Air Void System Parameters in Concrete Using 2D Analysis Method |
title_sort | development of the measuring techniques for estimating the air void system parameters in concrete using 2d analysis method |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7014259/ https://www.ncbi.nlm.nih.gov/pubmed/31963281 http://dx.doi.org/10.3390/ma13020428 |
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