Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process

Pavement defect shortens the service life of mixture, demonstrated by failures such as cracking, rutting, and stripping. Incorporating additives into conventional mixture is an approach to improve its performance and service life. Therefore, this research was conducted in three phases using treated...

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Main Author:	Kamarudin, Siti Nur Naqibah
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/99329/1/SitiNurNaqibahPSKA2022.pdf
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id	my-utm-ep.99329
record_format	uketd_dc
spelling	my-utm-ep.993292023-02-22T08:19:36Z Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process 2022 Kamarudin, Siti Nur Naqibah TA Engineering (General). Civil engineering (General) Pavement defect shortens the service life of mixture, demonstrated by failures such as cracking, rutting, and stripping. Incorporating additives into conventional mixture is an approach to improve its performance and service life. Therefore, this research was conducted in three phases using treated crumb rubber (TCR) and treated plastic (TP) as additives in the mixture. In the first phase, both additives were characterised using thermogravimetric analysis (TGA), field-emission scanning electron microscope (FE-SEM) and energy dispersive x-ray (EDX). Eight different percentages of TCR from 0.25 % to 5.0 % and six different percentages of TP from 0.25 % to 3.0 % were incorporated into a 14 mm nominal maximum aggregate size (AC14) mixture using a dry process. Marshall test was carried out to determine the optimum percentage of the additives. Results show that the mixtures of 0.75 % TCR and 0.75 % TP met all the required specifications and were selected as the optimum percentage. The mixtures with 0.75 % TCR and 0.75 % TP improved the fatigue cracking and rutting resistance compared to the conventional mixture. In the second phase, mechanical tests such as resilient modulus, dynamic creep, rutting and moisture damage of compacted and uncompacted mixtures and scanning electron microscope (SEM) were conducted to evaluate the performance of the mixture containing TCR and TP. Although the modified mixtures with both additives showed better performance than the conventional mixture, the TCR mixture was susceptible to rutting and moisture damage, while the TP mixture was identified with stripping potential. To overcome the issues, a combination of TCR and TP was investigated in the final phase. A mixture with 50 % TCR and 50 % TP shows 37 %, 44 % and 4 % improvement in the fatigue, rutting and moisture damage resistance, respectively, compared to the conventional mixture. It can be concluded that the combination of TCR-TP in mixture using dry process can be used as an alternative mixture to improve pavement performance. 2022 Thesis http://eprints.utm.my/id/eprint/99329/ http://eprints.utm.my/id/eprint/99329/1/SitiNurNaqibahPSKA2022.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:147008 phd doctoral Universiti Teknologi Malaysia, Faculty of Engineering - School of Civil Engineering Faculty of Engineering - School of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Kamarudin, Siti Nur Naqibah Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process
description	Pavement defect shortens the service life of mixture, demonstrated by failures such as cracking, rutting, and stripping. Incorporating additives into conventional mixture is an approach to improve its performance and service life. Therefore, this research was conducted in three phases using treated crumb rubber (TCR) and treated plastic (TP) as additives in the mixture. In the first phase, both additives were characterised using thermogravimetric analysis (TGA), field-emission scanning electron microscope (FE-SEM) and energy dispersive x-ray (EDX). Eight different percentages of TCR from 0.25 % to 5.0 % and six different percentages of TP from 0.25 % to 3.0 % were incorporated into a 14 mm nominal maximum aggregate size (AC14) mixture using a dry process. Marshall test was carried out to determine the optimum percentage of the additives. Results show that the mixtures of 0.75 % TCR and 0.75 % TP met all the required specifications and were selected as the optimum percentage. The mixtures with 0.75 % TCR and 0.75 % TP improved the fatigue cracking and rutting resistance compared to the conventional mixture. In the second phase, mechanical tests such as resilient modulus, dynamic creep, rutting and moisture damage of compacted and uncompacted mixtures and scanning electron microscope (SEM) were conducted to evaluate the performance of the mixture containing TCR and TP. Although the modified mixtures with both additives showed better performance than the conventional mixture, the TCR mixture was susceptible to rutting and moisture damage, while the TP mixture was identified with stripping potential. To overcome the issues, a combination of TCR and TP was investigated in the final phase. A mixture with 50 % TCR and 50 % TP shows 37 %, 44 % and 4 % improvement in the fatigue, rutting and moisture damage resistance, respectively, compared to the conventional mixture. It can be concluded that the combination of TCR-TP in mixture using dry process can be used as an alternative mixture to improve pavement performance.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Kamarudin, Siti Nur Naqibah
author_facet	Kamarudin, Siti Nur Naqibah
author_sort	Kamarudin, Siti Nur Naqibah
title	Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process
title_short	Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process
title_full	Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process
title_fullStr	Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process
title_full_unstemmed	Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process
title_sort	performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Civil Engineering
granting_department	Faculty of Engineering - School of Civil Engineering
publishDate	2022
url	http://eprints.utm.my/id/eprint/99329/1/SitiNurNaqibahPSKA2022.pdf
_version_	1776100590551564288

Performance of hot mix asphalt incorporating treated crumb rubber and treated plastic additives using dry process

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