Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust Particles
This paper focuses on the characterization of demolition construction waste containing asbestos fibers and the monitoring of fibrous dust released from asbestos–cement products (ACPs) during their removal from a three-story industrial building. Asbestos-containing products removal was carried out ac...
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doaj-c28159cd5241494192515e33c63d52252020-11-25T03:47:54ZengMDPI AGApplied Sciences2076-34172020-06-01104048404810.3390/app10114048Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust ParticlesNadezda Stevulova0Adriana Estokova1Marian Holub2Eva Singovszka3Kornel Csach4Faculty of Civil Engineering, Technical University of Kosice, Vysokoskolska 4, 042 00 Kosice, SlovakiaFaculty of Civil Engineering, Technical University of Kosice, Vysokoskolska 4, 042 00 Kosice, SlovakiaFaculty of Civil Engineering, Technical University of Kosice, Vysokoskolska 4, 042 00 Kosice, SlovakiaFaculty of Civil Engineering, Technical University of Kosice, Vysokoskolska 4, 042 00 Kosice, SlovakiaInstitute of Experimental Physics of the Slovak Academy of Sciences, Watsonova 47, 043 53 Kosice, SlovakiaThis paper focuses on the characterization of demolition construction waste containing asbestos fibers and the monitoring of fibrous dust released from asbestos–cement products (ACPs) during their removal from a three-story industrial building. Asbestos-containing products removal was carried out according to a demolition management system in terms of protection of workers. The results of a chemical analysis, X-ray diffraction analysis, infrared analysis and scanning electron microscopy of demolition waste samples confirmed the same material quality of asbestos–cement (AC) elements used throughout the building. In addition, a MgO/SiO<sub>2</sub> ratio corresponding to a serpentine silicate mineral of chrysotile was detected by means of X-ray fluorescence analysis. Also, crystalline phase calcium silicates and calcium carbonates from the cement matrix were identified in the AC waste. The relatively large differences in the elemental analysis between the sample area and the individual points found by energy-dispersive X-ray spectroscopic mapping are related to the composition heterogeneity. The highest content of magnesium occurs where asbestos fibers predominate in the cement matrix. The measured number concentrations of asbestos fibers before, during, and after asbestos–cement products removal were compared to outdoor concentrations. Indoor concentrations of asbestos fibers during the removal of AC materials did not exceed the permissible limit for a working environment (1000 fibers per one m<sup>3</sup>), except in three spots out of all the working sites inside the building. A relationship between the number and mass concentrations of asbestos dust is shown.https://www.mdpi.com/2076-3417/10/11/4048demolition wasteasbestos-cement materialchrysotile fibersnumber and mass concentrations of asbestos dust |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nadezda Stevulova Adriana Estokova Marian Holub Eva Singovszka Kornel Csach |
spellingShingle |
Nadezda Stevulova Adriana Estokova Marian Holub Eva Singovszka Kornel Csach Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust Particles Applied Sciences demolition waste asbestos-cement material chrysotile fibers number and mass concentrations of asbestos dust |
author_facet |
Nadezda Stevulova Adriana Estokova Marian Holub Eva Singovszka Kornel Csach |
author_sort |
Nadezda Stevulova |
title |
Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust Particles |
title_short |
Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust Particles |
title_full |
Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust Particles |
title_fullStr |
Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust Particles |
title_full_unstemmed |
Characterization of Demolition Construction Waste Containing Asbestos, and the Release of Fibrous Dust Particles |
title_sort |
characterization of demolition construction waste containing asbestos, and the release of fibrous dust particles |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2020-06-01 |
description |
This paper focuses on the characterization of demolition construction waste containing asbestos fibers and the monitoring of fibrous dust released from asbestos–cement products (ACPs) during their removal from a three-story industrial building. Asbestos-containing products removal was carried out according to a demolition management system in terms of protection of workers. The results of a chemical analysis, X-ray diffraction analysis, infrared analysis and scanning electron microscopy of demolition waste samples confirmed the same material quality of asbestos–cement (AC) elements used throughout the building. In addition, a MgO/SiO<sub>2</sub> ratio corresponding to a serpentine silicate mineral of chrysotile was detected by means of X-ray fluorescence analysis. Also, crystalline phase calcium silicates and calcium carbonates from the cement matrix were identified in the AC waste. The relatively large differences in the elemental analysis between the sample area and the individual points found by energy-dispersive X-ray spectroscopic mapping are related to the composition heterogeneity. The highest content of magnesium occurs where asbestos fibers predominate in the cement matrix. The measured number concentrations of asbestos fibers before, during, and after asbestos–cement products removal were compared to outdoor concentrations. Indoor concentrations of asbestos fibers during the removal of AC materials did not exceed the permissible limit for a working environment (1000 fibers per one m<sup>3</sup>), except in three spots out of all the working sites inside the building. A relationship between the number and mass concentrations of asbestos dust is shown. |
topic |
demolition waste asbestos-cement material chrysotile fibers number and mass concentrations of asbestos dust |
url |
https://www.mdpi.com/2076-3417/10/11/4048 |
work_keys_str_mv |
AT nadezdastevulova characterizationofdemolitionconstructionwastecontainingasbestosandthereleaseoffibrousdustparticles AT adrianaestokova characterizationofdemolitionconstructionwastecontainingasbestosandthereleaseoffibrousdustparticles AT marianholub characterizationofdemolitionconstructionwastecontainingasbestosandthereleaseoffibrousdustparticles AT evasingovszka characterizationofdemolitionconstructionwastecontainingasbestosandthereleaseoffibrousdustparticles AT kornelcsach characterizationofdemolitionconstructionwastecontainingasbestosandthereleaseoffibrousdustparticles |
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