Research Article

Material Composition Design and Anticracking Performance Evaluation of Asphalt Rubber Stress-Absorbing Membrane Interlayer (AR-SAMI)

Table 7

Conventional properties of asphalt.

Test itemsUnitsTest results
Raw asphaltAsphalt rubberSBS-modified asphalt

Penetration (15°C)0.1 mm322329
Penetration (25°C)0.1 mm915071
Penetration (30°C)0.1 mm14078110
PI−0.29850.73300.2557
Softening point°C48.968.572.3
Ductility (5°C)cm6.41729
Elastic recovery (25°C)%7.1775.590.3
Viscosity (135°C)Pa·s0.3273.31.968
Viscosity (177°C)Pa·s3.0970.298