Investigation of Rutting Resistance of Pyro-Oil Modified Reclaimed Asphalt Pavement (RAP) Binder

Road is an integral part of the transportation. Flexible pavement plays a major role in the transportation sector all over the world. Reclaimed Asphalt Pavement (RAP) is generated when asphalt pavement removed for reconstruction and resurfacing. The use of RAP is necessary to minimize the cost of construction materials and to save and protect the natural resources by requiring less amount of virgin aggregate and asphalt in road construction project. The application of pyro-oil has been incorporated in this paper. So, reusing of these materials are very much essential to lower down the wastage and the same can be seen as a step toward sustainable development. In this paper, an attempt has been made to incorporate 40% of RAP binder of virgin binder along with varying percentages of pyro-oil. Superpave rutting parameter (G*/Sin \(\partial\) ) and multiple stress creep recovery (MSCR) tests were employed for evaluating high temperature performance of binder. A dynamic shear rheometer was employed to carry out the tests. RAP binder has been seen to enhance the rutting behavior of virgin binder but incorporation of pyro-oil is seen to reduce the rutting resistance.