Abstract
Vacuum distillation bottoms from the rerefining of waste automotive oils (WODB) can be successfully blended with standard petroleum bitumen to produce a stable binder with acceptable physical properties for roading applications. The increase in viscosity and shear susceptibility after accelerated ageing of thin films at 163°C is slightly less for bitumen extended with WODB than for bitumen itself; but at temperatures above ∼200°C the WODB appears to accelerate the rate of bitumen oxidation. Air blowing at 240°C can be used to produce an acceptable binder from blends of WODB and a softer grade of bitumen. The rate of hardening during air blowing depends on both the batch and concentration of WODB.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
