Staff View: Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging

Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging

Road traffic noise is a significant environmental issue. Porous asphalt is often used to mitigate this problem. However, the clogging issue is one of the main challenges of using porous asphalt. Clogging leads to a significant reduction in permeability and sound absorption as the pavement aged. This...

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Main Authors:	Mahmud, Mohd. Zul Hanif, Abdul Hassan, Norhidayah, Hainin, Mohd. Rosli, Ismail, Che Ros, Putra Jaya, Ramadhansyah, Mohd. Warid, Muhammad Naqiuddin, Yaacob, Haryati, Mashros, Nordiana
Format:	Article
Published:	Elsevier Ltd 2021
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/95613/ http://dx.doi.org/10.1016/j.conbuildmat.2021.122654
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id	my.utm.95613
record_format	eprints
spelling	my.utm.956132022-05-31T13:04:30Z http://eprints.utm.my/id/eprint/95613/ Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging Mahmud, Mohd. Zul Hanif Abdul Hassan, Norhidayah Hainin, Mohd. Rosli Ismail, Che Ros Putra Jaya, Ramadhansyah Mohd. Warid, Muhammad Naqiuddin Yaacob, Haryati Mashros, Nordiana TA Engineering (General). Civil engineering (General) Road traffic noise is a significant environmental issue. Porous asphalt is often used to mitigate this problem. However, the clogging issue is one of the main challenges of using porous asphalt. Clogging leads to a significant reduction in permeability and sound absorption as the pavement aged. This study measures the changes in the microstructural properties and sound absorption with multiple clogging cycles via X-ray Computed Tomography scanning. The identification of the presence of clogging particles in the X-ray images is also one of the challenges due to the complexity of image segmentation. Clogging simulation tests are performed on the compacted samples at a concentration of 1.0 g/l and repeated for five clogging cycles. The microstructural analysis shows that severe clogging densification occurred at the top section of the porous asphalt (approximately one-third of the sample height), thereby leading to alteration in the physical void structure and void properties (i.e., percentage, number, and size). Accordingly, the peak of the sound absorption coefficient observed at 800 Hz under an initial condition shifted to a new peak of 630 Hz after severe clogging. Low-frequency sound wave energy has a low attenuation energy that can penetrate the clogged surface given the correlation between the sound absorption coefficient and the air void properties. This study also recommends the use of Non-local mean filter to minimise the effect of white noise (equal signal intensity or density) and improve the accuracy of image segmentation. Elsevier Ltd 2021 Article PeerReviewed Mahmud, Mohd. Zul Hanif and Abdul Hassan, Norhidayah and Hainin, Mohd. Rosli and Ismail, Che Ros and Putra Jaya, Ramadhansyah and Mohd. Warid, Muhammad Naqiuddin and Yaacob, Haryati and Mashros, Nordiana (2021) Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging. Construction and Building Materials, 283 . p. 122654. ISSN 0950-0618 http://dx.doi.org/10.1016/j.conbuildmat.2021.122654
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Mahmud, Mohd. Zul Hanif Abdul Hassan, Norhidayah Hainin, Mohd. Rosli Ismail, Che Ros Putra Jaya, Ramadhansyah Mohd. Warid, Muhammad Naqiuddin Yaacob, Haryati Mashros, Nordiana Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging
description	Road traffic noise is a significant environmental issue. Porous asphalt is often used to mitigate this problem. However, the clogging issue is one of the main challenges of using porous asphalt. Clogging leads to a significant reduction in permeability and sound absorption as the pavement aged. This study measures the changes in the microstructural properties and sound absorption with multiple clogging cycles via X-ray Computed Tomography scanning. The identification of the presence of clogging particles in the X-ray images is also one of the challenges due to the complexity of image segmentation. Clogging simulation tests are performed on the compacted samples at a concentration of 1.0 g/l and repeated for five clogging cycles. The microstructural analysis shows that severe clogging densification occurred at the top section of the porous asphalt (approximately one-third of the sample height), thereby leading to alteration in the physical void structure and void properties (i.e., percentage, number, and size). Accordingly, the peak of the sound absorption coefficient observed at 800 Hz under an initial condition shifted to a new peak of 630 Hz after severe clogging. Low-frequency sound wave energy has a low attenuation energy that can penetrate the clogged surface given the correlation between the sound absorption coefficient and the air void properties. This study also recommends the use of Non-local mean filter to minimise the effect of white noise (equal signal intensity or density) and improve the accuracy of image segmentation.
format	Article
author	Mahmud, Mohd. Zul Hanif Abdul Hassan, Norhidayah Hainin, Mohd. Rosli Ismail, Che Ros Putra Jaya, Ramadhansyah Mohd. Warid, Muhammad Naqiuddin Yaacob, Haryati Mashros, Nordiana
author_facet	Mahmud, Mohd. Zul Hanif Abdul Hassan, Norhidayah Hainin, Mohd. Rosli Ismail, Che Ros Putra Jaya, Ramadhansyah Mohd. Warid, Muhammad Naqiuddin Yaacob, Haryati Mashros, Nordiana
author_sort	Mahmud, Mohd. Zul Hanif
title	Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging
title_short	Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging
title_full	Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging
title_fullStr	Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging
title_full_unstemmed	Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging
title_sort	characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging
publisher	Elsevier Ltd
publishDate	2021
url	http://eprints.utm.my/id/eprint/95613/ http://dx.doi.org/10.1016/j.conbuildmat.2021.122654
_version_	1735386825820733440
score	13.211869

Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging

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