Design and Experimental Verification of Asphalt-Based Material for Grouting of Prestressed Structure

Table 1

Basic properties of AH70 asphalt and SBS asphalt.

Content		AH70 asphalt		SBS asphalt
		Test	Standard	Test	Standard
Penetration	30°C 0.1 mm	138.1		90.3
	25°C 0.1 mm	60.8	60–80	70.5	>40
	15°C 0.1 mm	20.7		28.3
Ductility (15°C)	cm	174	≥100	153	≥100
Softening point	°C	52	≥46	63	≥60
Wax content	%	1.4	<2.2	0.8	<2.2
Flash point	°C	330	≥260	354	≥260
Solubility	%	99.7	≥99.5	99.9	≥99.5
Density (15°C)	g/cm^3	1.049		1.026
Dynamic viscosity (60°C)	Pa·s	220	160	183	160
Flexible recovery (25°C)	%	73	>70	93	>70
RTFOT	Quality loss (%)	0.37	≤±0.8	0.65	<1
	Penetration ratio (%)	72	≥61	92	>65
	Ductility (cm)	28.3	≥15	36.1	>15