Evaluation of Performance Characteristics of Asphalt Mixture Containing Recycled Cooking Oil and Waste Engine Oil

Authors
1 Department of Civil Engineering, Malard Branch, Islamic Azad University, Malard, Tehran, Iran
2 Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran
Abstract
In road construction, different types of waste oils have been recommended to overcome the hardening effect of the percentage of asphalt mixture. However, choosing an effective rejuvenator based on a comparative study can lead to a more efficient use of resources. In this research, cooking oils and waste motor oil are used to rejuvenate three different percentages (30, 40 and 50%) of recycled asphalt pavement following the maximum current industrial compatibility. Blends rejuvenated with waste oils are compared with fresh blends and blends rejuvenated with commercial rejuvenators. Moisture sensitivity, indirect tensile strength and modulus of elasticity of different asphalt mixtures are analyzed. Based on statistical analysis and overall ranking, it is concluded that 7% of waste motor oils perform better than 40% recycled asphalt pavement, while 13% of waste oils can be used for up to 50% recycled asphalt pavement.
Keywords

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