Comparing the Properties of Virgin & Aged Bitumen by the addition of Rejuvenators

Abstract

Environmental and economic demands prompt to transportation agencies to increase in the use of Reclaimed Asphalt Pavement (RAP) in asphalt pavements. The use of RAP in pavements often require a rejuvenator to reduce the cracking. Estimating a best rejuvenator dosage is crucial to increase its advantages. Large quantity of waste oils from automobiles and restaurants can inflict adverse impact if it is not properly disposed. Recycling of these waste oils can be a suitable option, to reduce the use of natural resources and economic benefits. In this study, three rejuvenators were explored such as Waste Engine Oil (WEO), Waste Vegetable Oil (WVO) and Waste Brown Grease (WBG) with dosages of 5%, 10% and 15%. Physical testing (i.e. penetration, softening point, flash & fire point and ductility) were conducted in the lab on virgin and RAP binder with rejuvenators. WEO and WVO helps in softening when mixed with RAP binder. According to the results, both WEO and WVO can improve the properties of the RAP binder but WBG gives a little bit improvement.