The Improvement of Bitumen performanceby Adding Industrial Oil

Asphalt oxidative aging is one of the prevalent causes of pavement distresses which increase pavement susceptibility to fatigue and low temperature cracking. Oxidative aging in pavement is inevitable, applications of anti‐aging additives shown to be an effective method in delaying oxidative aging. As such this paper investigates the merit of application of industrial oil as an anti‐aging additive. To do so, different percentages of industrial oil was added to neat asphalt binder. Asphalt binder was then exposed to short term oxidative aging using a rolling thin film oven (RTFO). To study the change in the chemical, rheological and morphological properties of asphalt binders in presence of industrial oil, the Superpave tests were used. The performance grade study shows that industrial oil can improve the aging resistance of the bitumen. Carboxylic acids occur naturally in asphalt; however its concentration has been known to be increased significantly due to oxidative aging. This in turn reduces oxidation aging in modified asphalt. In addition, it was found that presence of industrial oil significantly improves pavement resistance to rutting. It was concluded that introduction of industrial oil to asphalt binder can improve the anti‐aging property, rutting performance and rheological properties of bitumen.

کلیدواژه ها:

Industrial Oil ، Oil Modified Bitumen ، Rheology ، Aging