Experimental Study on the High-Temperature and Low-Temperature Performance of Polyphosphoric Acid/Styrene-Butadiene-Styrene Composite-Modified Asphalt

Table 3

Performance index of YH791 modifying agent.

Item	YH791
Structure	Line-type
PS/PB	30/70
Percentage of liquid volume (%)	0
300% stretching stress (MPa)	1.90
Elongation (%)	700
Permanent deformation (%)	45
Hardness	60
Total ash (%)	0.20