The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives

Warm mix asphalts (WMAs) are a green technology that requires low energy consumption and is more environmentally friendly than conventional hot mix asphalt (HMA) technologies. However, there are some drawbacks that cause WMAs to be less frequently adopted. As such, further research is warranted....

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Main Author:	Buhari, Rosnawati
Format:	Thesis
Language:	English English English
Published:	2022
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.uthm.edu.my/8479/1/24p%20ROSNAWATI%20BUHARI.pdf http://eprints.uthm.edu.my/8479/2/ROSNAWATI%20BUHARI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8479/3/ROSNAWATI%20BUHARI%20WATERMARK.pdf
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spelling	my-uthm-ep.84792023-04-02T00:50:49Z The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives 2022-05 Buhari, Rosnawati TA Engineering (General). Civil engineering (General) Warm mix asphalts (WMAs) are a green technology that requires low energy consumption and is more environmentally friendly than conventional hot mix asphalt (HMA) technologies. However, there are some drawbacks that cause WMAs to be less frequently adopted. As such, further research is warranted. To that end, this study examined the possibility of modifying asphalt binders with nano-TiO2 (titanium dioxide nanoparticles) for use in WMAs. Initially, a PG70 asphalt binder was modified with 9.0% nano-TiO2 to meet the performance requirements of a PG76 asphalt binder. As the viscosity of the 9% nano-TiO2 modified asphalt binder was marginally higher than that of unmodified PG70 asphalt binders, the 9.0% nano-TiO2 was further modified by its total weight with 5.0%, 5.5%, 6.0%, and 6.5% octadecylamine (OCTA) and 3.5%, 4.0%, 4.5%, and 5.0% 3- aminopropyltriethoxysilane (TRI) to produce new nanoparticle additives namely amine nano-TiO2 OCTA (TIOCTA1, TIOCTA2, TIOCTA3, and TIOCTA4) and amine nano-TiO2 TRI (TIOTRI1, TIOTRI2, TIOTRI3, and TIOTRI4). These new nanoparticle additives were then added to PG70 asphalt binders to improve the workability of asphalt mixtures at lower temperatures. After mixed, the asphalt binders were then evaluated in terms of storage stability as well as physical, rheological, and morphological characteristics. Then, the asphalt mixtures incorporating these asphalt binders were compacted using temperatures that were 20°C to 40°C lower than that required by HMA to produce WMAs. The performance of all samples was evaluated in terms of resistance to rutting, fatigue, and moistureinduced damage via a resilient modulus test, indirect tensile fatigue (ITF) test, dynamic creep (DC) test, and a modified Lottman test. The test results indicated that the performance of the modified asphalt binders had improved to PG76 asphalt binder, homogeneous, stable in storage, and had a high modulus. Furthermore, all TIOCTA and TIOTRI asphalt mixtures that had been produced at lower temperatures were more resistant to fatigue, rutting, and moisture-induced damage than those of HMA. A comparative study also concluded that the TIOTRI3 asphalt mixture compacted at 30°C lower than the HMA, had significantly better resistance to rutting, fatigue and moisture-induced damage. 2022-05 Thesis http://eprints.uthm.edu.my/8479/ http://eprints.uthm.edu.my/8479/1/24p%20ROSNAWATI%20BUHARI.pdf text en public http://eprints.uthm.edu.my/8479/2/ROSNAWATI%20BUHARI%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/8479/3/ROSNAWATI%20BUHARI%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Awam dan Alam Bina
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Buhari, Rosnawati The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives
description	Warm mix asphalts (WMAs) are a green technology that requires low energy consumption and is more environmentally friendly than conventional hot mix asphalt (HMA) technologies. However, there are some drawbacks that cause WMAs to be less frequently adopted. As such, further research is warranted. To that end, this study examined the possibility of modifying asphalt binders with nano-TiO2 (titanium dioxide nanoparticles) for use in WMAs. Initially, a PG70 asphalt binder was modified with 9.0% nano-TiO2 to meet the performance requirements of a PG76 asphalt binder. As the viscosity of the 9% nano-TiO2 modified asphalt binder was marginally higher than that of unmodified PG70 asphalt binders, the 9.0% nano-TiO2 was further modified by its total weight with 5.0%, 5.5%, 6.0%, and 6.5% octadecylamine (OCTA) and 3.5%, 4.0%, 4.5%, and 5.0% 3- aminopropyltriethoxysilane (TRI) to produce new nanoparticle additives namely amine nano-TiO2 OCTA (TIOCTA1, TIOCTA2, TIOCTA3, and TIOCTA4) and amine nano-TiO2 TRI (TIOTRI1, TIOTRI2, TIOTRI3, and TIOTRI4). These new nanoparticle additives were then added to PG70 asphalt binders to improve the workability of asphalt mixtures at lower temperatures. After mixed, the asphalt binders were then evaluated in terms of storage stability as well as physical, rheological, and morphological characteristics. Then, the asphalt mixtures incorporating these asphalt binders were compacted using temperatures that were 20°C to 40°C lower than that required by HMA to produce WMAs. The performance of all samples was evaluated in terms of resistance to rutting, fatigue, and moistureinduced damage via a resilient modulus test, indirect tensile fatigue (ITF) test, dynamic creep (DC) test, and a modified Lottman test. The test results indicated that the performance of the modified asphalt binders had improved to PG76 asphalt binder, homogeneous, stable in storage, and had a high modulus. Furthermore, all TIOCTA and TIOTRI asphalt mixtures that had been produced at lower temperatures were more resistant to fatigue, rutting, and moisture-induced damage than those of HMA. A comparative study also concluded that the TIOTRI3 asphalt mixture compacted at 30°C lower than the HMA, had significantly better resistance to rutting, fatigue and moisture-induced damage.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Buhari, Rosnawati
author_facet	Buhari, Rosnawati
author_sort	Buhari, Rosnawati
title	The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives
title_short	The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives
title_full	The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives
title_fullStr	The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives
title_full_unstemmed	The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives
title_sort	performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Awam dan Alam Bina
publishDate	2022
url	http://eprints.uthm.edu.my/8479/1/24p%20ROSNAWATI%20BUHARI.pdf http://eprints.uthm.edu.my/8479/2/ROSNAWATI%20BUHARI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8479/3/ROSNAWATI%20BUHARI%20WATERMARK.pdf
_version_	1776103355644379136

The performance of warm mix asphalt incorporating asphalt binder improved with amine nano-tio2 additives

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