The ductility test (Figure 162) measures asphalt binder ductility by stretching a standard-sized briquette of asphalt binder (Figure 163) to its breaking point. The stretched distance in centimeters at breaking is then reported as ductility. Like the penetration test, this test has limited use since it is empirical and conducted at only one temperature (25° C (77° F)).

一、 Standard Test Methods

•  AASHTO T 51 and ASTM D 113: Ductility of Bituminous Materials