So far, there are three kinds of bitumen specification that can be a guidance in determining the quality of bitumen for pavement. The three specifications are Penetration Graded, Viscosity Graded and Performance Graded. Penetration Graded and Viscosity Graded do not acomodate the climate condition of the site, that reason, there are not differences between bitumen specification for tropical condition and other condition. Whereas, climate conditions (i.e., air temperature) effect bitumen characteristic. h is from the Performance Graded Specification that classifies bitumen based on maximum and minimum average temperature of site where the bitumen applied Based of Performance Graded Specification, obviously there are different characteristic for bitumen used in tropical climate and other climate.
For several reasons, Indonesia has not been able to apply Performance Graded Specification, instead of using Penetration Graded Specification. Acomodating the climate condition are crucial in determining bitumen characteristic, this paper explains the investigation results of corelation between Graded Specification and Penetration Graded Specification.