Universiti Teknologi Malaysia Institutional Repository

Effect of different rejuvenating agents on the mechanical performance of recycled bituminous mixture

Idham, M. K. and Jeffry, S. N. A. and Hainin, M. R. and Yaacob, H. and Hassan, N. A. and Warid, M. N. M. and Mohamed, A. and Yunus, N. Z. M. (2019) Effect of different rejuvenating agents on the mechanical performance of recycled bituminous mixture. In: 11th International Conference on Geotechnical Engineering in Tropical Regions, GEOTROPIKA 2019 and 1st International Conference on Highway and Transportation Engineering, ICHITRA 2019, 27-28 Feb 2019, Kuala Lumpur, Malaysia.


Official URL: http://www.dx.doi.org/10.1088/1757-899X/527/1/0120...


Reclaimed asphalt pavement (RAP) is a waste material generated from pavement milling activity. Rejuvenating agent is introduced to restore the properties of aging bitumen in RAP. Many studies have been investigated the performance of recycled mixture incorporating RAP with oil-based (OB) rejuvenating agent, but there is still limited research on water-based (WB) rejuvenating agent. Therefore, this study evaluated the performance of mixture incorporating RAP with OB and WB rejuvenating agents (RAP-OB and RAP-WB). OB and WB rejuvenating agents were added at recommended content of 0.70% and 52.13% by weight of bitumen, respectively. Indirect tensile strength, resilient modulus, dynamic creep and asphalt pavement analyzer (APA) tests were conducted to assess the resistance of the mixtures toward permanent deformation and fatigue cracking. It was found that the addition of OB rejuvenating agent enhanced the tensile strength, resilient and stiffness modulus by approximately 41%, 94% and 158%, respectively, relative to the control mixture. APA recorded that RAP-OB produced the lowest rut depth, followed by RAP-WB and control mixture. It indicates that RAP-OB produced the highest resistance to permanent deformation and fatigue cracking. Thus, the OB rejuvenating agent significantly improved the performance of the recycled mixture compared to the WB rejuvenating agent.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:mixtures, recycling, tensile strength
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:89471
Deposited By: Narimah Nawil
Deposited On:09 Feb 2021 12:26
Last Modified:09 Feb 2021 12:26

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