Rutting and cracking performance of asphalt concrete incorporating plasticwaste and crumb rubber

Abstract

Typically, asphalt pavements encounter two major types of distresses, rutting and cracking. Rutting occurs mostly in early stage or immature age while cracking occurs eventually after aging when the pavement becomes stiffer. Generally, stiffer asphalt pavements have good rutting resistance and softer pavements have good cracking resistance. It is important to achieve a balanced asphalt mixture having both good rutting and cracking resistances. This study aims to evaluate the use of two types of recycled materials, plastic waste and granulated crumb rubber, on the rutting and cracking properties of asphalt. Penetration Grade 60/70 binder was used as base binder, and for the control-mix. Different types of samples were prepared with Marshall and gyratory compactors and the asphalt properties were determined with respect to resilient modulus, cracking resistance and Hamburg wheel tracking test, before and after simulated aging in the laboratory.