Civil Engineering and Architecture 11(2): 836-846, 2023 http://www.hrpub.org DOI: 10.13189/cea.2023.110222 Evaluation on the Effect of Zinc Oxide Addition to Aging Rate of Asphalt and Performance of Resilience Modulus in Asphalt Concrete–Wearing Course Ayu Kamila Khanza 1 , Joni Arliansyah 2,* , Edi Kadarsa 2 1 Master Degree Program of Civil Engineering, Universitas Sriwijaya, Indonesia 2 Department of Civil Engineering, Universitas Sriwijaya, Indonesia Received April 9, 2022; Revised November 18, 2022; Accepted December 22, 2022 Cite This Paper in the Following Citation Styles (a): [1] Ayu Kamila Khanza, Joni Arliansyah, Edi Kadarsa , "Evaluation on the Effect of Zinc Oxide Addition to Aging Rate of Asphalt and Performance of Resilience Modulus in Asphalt Concrete–Wearing Course," Civil Engineering and Architecture, Vol. 11, No. 2, pp. 836 - 846, 2023. DOI: 10.13189/cea.2023.110222. (b): Ayu Kamila Khanza, Joni Arliansyah, Edi Kadarsa (2023). Evaluation on the Effect of Zinc Oxide Addition to Aging Rate of Asphalt and Performance of Resilience Modulus in Asphalt Concrete–Wearing Course. Civil Engineering and Architecture, 11(2), 836 - 846. DOI: 10.13189/cea.2023.110222. Copyright©2023 by authors, all rights reserved. Authors agree that this article remains permanently open access under the terms of the Creative Commons Attribution License 4.0 International License Abstract This study discussed the effect of the addition of the antioxidant Zinc Oxide (ZnO) on the aging rate of AC-WC coated asphalt and found out the effect of the addition of ZnO antioxidant on the stiffness of the asphalt layer. The aging of asphalt can be caused by two main factors, namely evaporation of light oil fractions contained in asphalt and oxidation. In this study, it showed that, compared to the addition of 5% and 15% ZnO to asphalt, the addition of 10% ZnO provided the most effective results on the asphalt base affecting the rheological properties of asphalt, namely reducing the penetration value by 1 dmm, increasing the softening point of asphalt by 0.5°C but reducing the ductility by 10 cm. In the resilience modulus test which was carried out after aging at 135°C for 0, 24, 48, 72, 96, and 120 hours, the modulus value containing ZnO was always smaller than that of asphalt without ZnO content. The addition of antioxidant Zinc Oxide (ZnO) antioxidant to asphalt had a positive effect on the aging rate of asphalt and the performance of the open-graded AC-WC resilience modulus of asphalt mixture was effective at an additional 10% level. Keywords Aging Asphalt, Antioxidant, Zinc Oxide 1. Introduction Roads as one of the transportation infrastructures are the lifeblood of people who have an important role in the development of life. Pavement is constructed to serve traffic during its design life. The frequency of excessive traffic loads can cause rapid damage to the pavement. Asphalt pavement is one whose surface layer is made of an asphalt mixture. The asphalt mixture can be used as a surface course, either as a wearing course, a binder course, or a basic course, while the type of material that can be used in these layers depends on the function of the material in the pavement structure during its service life and the surrounding environmental conditions [1]. In asphalt pavement, the damage that occurs can be in the form of cracks or deformation. In addition, as an unprotected structure, the environment also has a significant influence on pavement durability. Raveling, asphalt aging, washboard, and permanent deformation are the types of damage caused by the main environmental factors in the form of ultraviolet light, water, and changes in the humidity and temperature conditions day and night. The type of damage that occurs in the paved pavement is generally not one type but is a combination of all types of damage.