Jordan Journal of Civil Engineering

Charateristics of Waste oils rejuvenated RAP Bitumen - An Experimental Study


Vishal Kumar; Praveen Aggarwal;


In recent years, Reclaimed Asphalt Pavement (RAP) has become very popular in pavement construction due to its benefits to the economy and the environment. The present study investigates the feasibility of employing Waste Cooking Oil (WCO) and Waste Engine Oil (WEO) as rejuvenators blended with reusable asphalt binder through physical and rheological properties. For this purpose, characteristics of the virgin, reclaimed bitumen and modified RAP binders were assessed through various testing procedures at high and intermediate temperatures. Examined conventional properties of WCO and WEO modified bitumen include softening point, penetration, ductility, and viscosity tests. In addition to these rheological properties, which include Amplitude Sweep, Frequency Sweep, Multiple Stress Creep Recovery (MSCR), Linear amplitude sweep (LAS) test, and High-Temperature Performance Grading (HTPG) were carried out by Dynamic Shear Rheometer (DSR). The experimental outcomes revealed that both WCO and WEO improved stiffness, workability, and viscous behavior of aged bitumen. However, rutting resistance was reduced with the addition of waste oils. Besides this, rejuvenated WCO binder had some benefits over WEO in enhancing fatigue cracking resistance. Overall, WCO performs better in restoring stiff binder properties than WEO as per rheological testing.


Dynamic Shear Rheometer (DSR), Reclaimed Asphalt Pavement (RAP), Rejuvenators, Waste Cooking Oil (WCO), Waste Engine Oil (WEO),