Table 1.

Properties of SBS modified asphalt.

Test Indexes		Requirements	Results	Experiment Method
Penetration (25 °C)/0.1 mm		60~80	71	T0604
Softening point/°C		≮55	86	T0606
Ductility (5 cm/min, 15 °C)/cm		≮30	48	T0605
Penetration Index (PI)		−0.4~1.0	0.5	T0604
Segregation (soften the spread)/°C		≯2.5	1.4	T0661
Recovery of elasticity (25 °C)/%		≮65	76	T0662
RTFOT residue	Quality change/%	±1.0	−0.08	T0610
	Penetration ratio/%	≮60	86	T0604
	15 °C residual ductility/cm	≮20	37	T0605