Study on Properties of Drainage SBS Modified Asphalt Mixture with Fiber

Table 11

Experimental results of modified asphalt.

Test metric	7% SBS	12% TPS	Specification requirement
Penetration (25°C, 0.1 mm)	45.3	43.7	＞40
Softening point (°C)	83.6	89.7	＞80
Ductility (5 cm·min^−1, 15°C) (cm)	57.8	52.3	＞50
Toughness (N·m)	21.7	24.6	＞20
Tenacity (N·m)	16.3	18.8	＞15
Dynamic viscosity at 60°C (Pa·s)	20578	24984	＞20000