Effect of antioxidant characteristic from waste cooking oil in modified asphalt binder
Aging process especially in asphalt binder material can occur throughout the life cycle of asphalt pavement starting from mixing, placement and during the service life. During this process, the more stiffer and brittle of asphalt binder is produced due to age hardening and gives an indication of...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications, Switzerland
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/80245/1/Effect%20of%20Antioxidant%20Characteristic.pdf http://irep.iium.edu.my/80245/ https://www.scientific.net/KEM.700.197 |
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| Summary: | Aging process especially in asphalt binder material can occur throughout the life cycle of
asphalt pavement starting from mixing, placement and during the service life. During this process,
the more stiffer and brittle of asphalt binder is produced due to age hardening and gives an
indication of initial factor of deterioration in asphalt pavement. A number of noteworthy researchers
have focused on oil based modification to produce modified asphalt binder by using Waste Cooking
Oil (WCO), due to the presence of natural antioxidant properties possessed in WCO. Antioxidant
has played the role as an oxidative inhibition and has the potential to minimize the aging rate to
occur. The aging process is conducted by separating between short term and long term aging where
short term oxidative aging of binders was simulated using rolling thin film oven (RTFO) while long
term aging was performed using pressure aging vessel (PAV). The laboratory evaluation was
carried out to investigate the relationship between the qualities of WCO that affect the availability
of antioxidant amount towards the susceptibility of aging rate by conducting Dynamic Shear
Rheometer (DSR). The result from rheological studies demonstrated that the lowest Aging Index
(AI) is presented as 2.14, 2.18 and 1.79 for replacement by using WCO in December sample at
concentration of 3%, 4% and 5% for short term aging while AI at 3% = 5.17 and 5% = 7.22 for long
term aging. Therefore, the high quality of oil represented by WCO in December sample has
indicated the high availability of antioxidant content that can minimize the aging susceptibility in
the asphalt binder modified by WCO. |
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