Investigation on rheology and physical properties of asphalt binder blended with waste cooking oil

Abstract

The service life of the concrete pavement is more than 20 years. While the service life of asphalt pavement is about ten years. The service life cannot be achieved due to pavement damage and increase the cost of road maintenance. The waste cooking oil gives a solution to soften the asphalt binder. The idea of using WCO is the possibility of transferring the aged asphalt binder condition from stiff to soft and reuse it for a new construction road. In this study, the bitumen grade 60/70 blended with 0, 2, 4, 6% of waste cooking oil by the weight of the bitumen. In this study, the bitumen prepared with various waste cooking oil percentage evaluated in terms of their properties such as the Softening point, Penetration, penetration index, penetration-viscosity number, Viscosity, and Dynamic Shear Rheometer. The test result indicates that the penetration values increased with rising the content of the waste cooking oil and the softening point result decreased related to the quantity of the waste cooking oil. The viscosity of the binder reduced when increased the content of WCO. The strength of the binder (G∗) will decrease, and the elasticity of the binder (&) will grow when increased the content of the oil. The rutting parameter decreased with increased WCO. From this finding, it concluded that the waste cooking oil has a potential impact on soft the asphalt binder and can be used to produce a soft asphalt binder. Moreover, the 60/70 grade asphalt binder can be 80/100 after adding 2% of waste cooking oil.