Study on the Contact Stress Distribution Model of Asphalt Mixture Particles

Table 1

Asphalt performance.

Test index	Unit	Technical requirements				Test results
		70#	SBS modified	S-HV modified	Special modified	70#	SBS modified	S-HV modified	Special modified
Softening point	°C	>43	≥70	≥80	≥95	50	90	93	101
Ductility (5°C)	cm	>20	≥20	≥20	≥30	49.4	32.5	31.5	37
Penetration degree (25°C)	0.1 mm	60–80	40–60	≥40	≥35	71.8	55	48.1	40.1
Dynamic viscosity (60°C)	Pa s		≤3.0	>200000	≥400000		2.5	>200000	>580000
Flash point	°C	≥260	≥230	≥230	≥260	328	320	≥230	335