Interlayer Working Conditions Classification and Treatment Measures of Airport Asphalt Pavement Overlay

Table 10

Technical specifications of asphalt.

Technical indicators				Unit	Measured value	Standard [20]
Ordinary asphalt	Penetration (25°C, 100 g, 5 s)			0.1 mm	43	40–120
	Softening point TR&B			°C	84.0	≥80
	Dynamic viscosity (135°C)			Pa·s	1.64	≤3
	Elastic recovery (25°C)			%	29126	≥20000
	RTFOT residue		Quality loss	%	0.14	≤0.6
			Penetration ratio 25°C	%	71	≥65
	Density (15°C)			g/cm^3	0.986	–
SBS-modified asphalt	Penetration (25°C, 100 g, 5 s)			0.1 mm	67.2	60–80
	Ductility (5°C, 5 cm/min)			cm	44.8	≥30
	Softening point TR&B			°C	79.0	≥55
	Dynamic viscosity (135°C)			Pa·s	1.19	≤3
	Elastic recovery (25°C)			%	88	≥65
	Density (15°C)			g/cm^3	1.016	–
	RTFOT residue	Quality loss		%	−0.4	≤±1
		Penetration ratio 25°C		%	65	≥60
		Ductility 5°C, 5 cm/min		cm	31	≥20
SBS-modified emulsified asphalt	Weight of screen residue (1.18 mm), ≤			%	0.02	0.1
	ductility (5°C, 5 cm/min)			cm	44.8	≥30
	Storage stability	1 d, ≤		%	0.5	1
		5 d, ≤		%	1.2	5
	Evaporated residue	Content, ≤		%	52	50
		Penetration (25°C, 100 g, 5 s)		0.1 mm	59	40–120
		Softening point, ≤		°C	53.5	50
		Ductility (5°C), ≥		0.1 mm	35	20
		Solubility (TCE), ≥		°C	98.3	97.5
	Viscosity	EngLa viscosity E25		—	7	1–10
		Asphalt standard viscosity C25,3		S	15	8–25