Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®

The asphalt industry is making constant efforts to minimize energy consumption and reduce emissions by lowering asphalt production temperature. This can be achieved by incorporating warm asphalt additive named Sasobit®. In this study, rheological properties of a conventional bitumen 60/70 penetratio...

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Main Author:	Aman, Mohamad Yusri
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TA1-2040 Engineering (General) Civil engineering (General)
Online Access:	http://eprints.usm.my/43820/1/Mohamad%20Yusri%20Bin%20Aman24.pdf
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id	my-usm-ep.43820
record_format	uketd_dc
spelling	my-usm-ep.438202019-04-12T05:26:10Z Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit® 2013-08 Aman, Mohamad Yusri TA1-2040 Engineering (General). Civil engineering (General) The asphalt industry is making constant efforts to minimize energy consumption and reduce emissions by lowering asphalt production temperature. This can be achieved by incorporating warm asphalt additive named Sasobit®. In this study, rheological properties of a conventional bitumen 60/70 penetration grade with and without Sasobit® at different aging conditions have been investigated. The addition of Sasobit® content increased penetration index and complex modulus (G*), despite reduction in phase angle (δ). By adding 3% Sasobit®, the mixing temperature is decreased from 160°C to 150°C. Meanwhile, adding 1%, 2% and 3% of it increased the PG 70 base binder to PG 73, PG 74 and PG 76, respectively. There was no significant change observed in the mixing temperature from 3% to 4% of Sasobit® addition. However, the reduction of mixing temperatures may prevent moisture from being completely evaporated from the aggregate and so affect the bitumen bond, making the mixture more susceptible to stripping. Two anti-stripping additives, namely hydrated lime and Pavement Modifier (PMD) were used to reduce the destructive effects of moisture. The Dynamic Asphalt Stripping Machine (DASM) that simulate rainfall event was used to enhance stripping. Upon subjected to dynamic stripping, specimens were tested for indirect tensile strength and Cantabro test showed lower strength and less resistance to disintegration due to stripped mastic as compared to immersing condition. 2013-08 Thesis http://eprints.usm.my/43820/ http://eprints.usm.my/43820/1/Mohamad%20Yusri%20Bin%20Aman24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TA1-2040 Engineering (General) Civil engineering (General)
spellingShingle	TA1-2040 Engineering (General) Civil engineering (General) Aman, Mohamad Yusri Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®
description	The asphalt industry is making constant efforts to minimize energy consumption and reduce emissions by lowering asphalt production temperature. This can be achieved by incorporating warm asphalt additive named Sasobit®. In this study, rheological properties of a conventional bitumen 60/70 penetration grade with and without Sasobit® at different aging conditions have been investigated. The addition of Sasobit® content increased penetration index and complex modulus (G*), despite reduction in phase angle (δ). By adding 3% Sasobit®, the mixing temperature is decreased from 160°C to 150°C. Meanwhile, adding 1%, 2% and 3% of it increased the PG 70 base binder to PG 73, PG 74 and PG 76, respectively. There was no significant change observed in the mixing temperature from 3% to 4% of Sasobit® addition. However, the reduction of mixing temperatures may prevent moisture from being completely evaporated from the aggregate and so affect the bitumen bond, making the mixture more susceptible to stripping. Two anti-stripping additives, namely hydrated lime and Pavement Modifier (PMD) were used to reduce the destructive effects of moisture. The Dynamic Asphalt Stripping Machine (DASM) that simulate rainfall event was used to enhance stripping. Upon subjected to dynamic stripping, specimens were tested for indirect tensile strength and Cantabro test showed lower strength and less resistance to disintegration due to stripped mastic as compared to immersing condition.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Aman, Mohamad Yusri
author_facet	Aman, Mohamad Yusri
author_sort	Aman, Mohamad Yusri
title	Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®
title_short	Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®
title_full	Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®
title_fullStr	Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®
title_full_unstemmed	Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®
title_sort	water sensitivity of warm porous asphalt incorporating sasobit®
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2013
url	http://eprints.usm.my/43820/1/Mohamad%20Yusri%20Bin%20Aman24.pdf
_version_	1747821284932190208

Water Sensitivity Of Warm Porous Asphalt Incorporating Sasobit®

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