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Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers

Utilization of waste materials in civil engineering applications has been documented as an effective method to preserve environment and natural resources. One of the well-known waste materials is steel slag aggregate, which is a byproduct of steel manufacturing. However, volume instability and hi...

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Main Author: Hezam Alnadish, Adham Mohammed
Format: Thesis
Language:English
English
English
Published: 2019
Subjects:
TE250-278.8 Pavements and paved roads
Online Access:http://eprints.uthm.edu.my/42/1/ADHAM%20MOHAMMED%20HEZAM%20ALNADISH%20COPYRIGHT%20DECLARATION.pdf
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spelling my.uthm.eprints.422021-06-22T03:20:18Z http://eprints.uthm.edu.my/42/ Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers Hezam Alnadish, Adham Mohammed TE250-278.8 Pavements and paved roads Utilization of waste materials in civil engineering applications has been documented as an effective method to preserve environment and natural resources. One of the well-known waste materials is steel slag aggregate, which is a byproduct of steel manufacturing. However, volume instability and high density are the main drawbacks of using steel slag aggregates. In this study, steel slag aggregates were immersed in water for six months to minimize the free lime and free magnesia content, which are mainly responsible for the volume instability. Furthermore, the granite aggregates were replaced by electric arc furnace (EAF) steel slag aggregate with different proportions to identify the suitable substitution in terms of superior performance. Subsequently, the asphalt mixtures incorporated the appropriate proportion of the steel slag aggregates were reinforced with polyvinyl alcohol (PVA), acrylic, and polyester fibers at different dosages of 0.05, 0.15, and 0.3% by weight of the aggregates, respectively. The conducted performance tests were resilient modulus, dynamic creep, rutting depth, moisture susceptibility, and cracking resistance. The findings of this study showed that the free lime and free magnesia content in the treated steel slag aggregate have significantly decreased. On the other hand, the asphalt mixtures incorporated coarse steel slag aggregate exhibited the best performance than the other substitutions. Furthermore, introducing synthetic fibers have dramatically enhanced the cracking resistance. The higher the fiber content, the higher the resistance to cracking. Additionally, the outputs of the permanent deformation tests showed that as the fibers dosages increase, the deformation increases due to the densification. Moreover, the asphalt mixtures performance incorporating 0.15% of synthetic fibers possesses the ability to decrease the thickness of the asphalt layer by about 10%. In conclusion, improving the performance of asphalt mixtures through utilization of steel slag aggregate and synthetic fibers is a successful approach in terms of extending the service life of asphalt layer. 2019-07 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/42/1/ADHAM%20MOHAMMED%20HEZAM%20ALNADISH%20COPYRIGHT%20DECLARATION.pdf text en http://eprints.uthm.edu.my/42/2/24p%20ADHAM%20MOHAMMED%20HEZAM%20ALNADISH.pdf text en http://eprints.uthm.edu.my/42/3/ADHAM%20MOHAMMED%20HEZAM%20ALNADISH%20WATERMARK.pdf Hezam Alnadish, Adham Mohammed (2019) Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers. Doctoral thesis, Universiti Tun Hussein Onn Malaysia.
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
English
English
topic TE250-278.8 Pavements and paved roads
spellingShingle TE250-278.8 Pavements and paved roads
Hezam Alnadish, Adham Mohammed
Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
description Utilization of waste materials in civil engineering applications has been documented as an effective method to preserve environment and natural resources. One of the well-known waste materials is steel slag aggregate, which is a byproduct of steel manufacturing. However, volume instability and high density are the main drawbacks of using steel slag aggregates. In this study, steel slag aggregates were immersed in water for six months to minimize the free lime and free magnesia content, which are mainly responsible for the volume instability. Furthermore, the granite aggregates were replaced by electric arc furnace (EAF) steel slag aggregate with different proportions to identify the suitable substitution in terms of superior performance. Subsequently, the asphalt mixtures incorporated the appropriate proportion of the steel slag aggregates were reinforced with polyvinyl alcohol (PVA), acrylic, and polyester fibers at different dosages of 0.05, 0.15, and 0.3% by weight of the aggregates, respectively. The conducted performance tests were resilient modulus, dynamic creep, rutting depth, moisture susceptibility, and cracking resistance. The findings of this study showed that the free lime and free magnesia content in the treated steel slag aggregate have significantly decreased. On the other hand, the asphalt mixtures incorporated coarse steel slag aggregate exhibited the best performance than the other substitutions. Furthermore, introducing synthetic fibers have dramatically enhanced the cracking resistance. The higher the fiber content, the higher the resistance to cracking. Additionally, the outputs of the permanent deformation tests showed that as the fibers dosages increase, the deformation increases due to the densification. Moreover, the asphalt mixtures performance incorporating 0.15% of synthetic fibers possesses the ability to decrease the thickness of the asphalt layer by about 10%. In conclusion, improving the performance of asphalt mixtures through utilization of steel slag aggregate and synthetic fibers is a successful approach in terms of extending the service life of asphalt layer.
format Thesis
author Hezam Alnadish, Adham Mohammed
author_facet Hezam Alnadish, Adham Mohammed
author_sort Hezam Alnadish, Adham Mohammed
title Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
title_short Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
title_full Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
title_fullStr Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
title_full_unstemmed Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
title_sort performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
publishDate 2019
url http://eprints.uthm.edu.my/42/1/ADHAM%20MOHAMMED%20HEZAM%20ALNADISH%20COPYRIGHT%20DECLARATION.pdf
http://eprints.uthm.edu.my/42/2/24p%20ADHAM%20MOHAMMED%20HEZAM%20ALNADISH.pdf
http://eprints.uthm.edu.my/42/3/ADHAM%20MOHAMMED%20HEZAM%20ALNADISH%20WATERMARK.pdf
http://eprints.uthm.edu.my/42/
_version_ 1738580686657290240
score 13.211869

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