Classification of Performance Grades of High Modulus Asphalt and Its Mixture: Taking China as an Example

Table 2

Classification standard of low-grade high modulus asphalt mixture.

Grades	Dynamic modulus (MPa)	Dynamic stability (times/mm)	Ultimate flexural-	Residual stability (%)	TSR (%)
			tensile strain (με)
Excellent	[24000, +∞)	[6850, +∞)	[3400, +∞)	[93, +∞)	[92, +∞)
Good	[20000, 24000)	[2850, 6850)	[2600, 3400)	[89, 93)	[87, 92)
General	[17600, 20000)	[2000, 2850)	[1900, 2600)	[86, 89)	[85, 87)
Poor	[14000, 17600)	[0, 2000)	[0, 1900)	[80, 86)	[80, 85)

Note 1: specification requires dynamic stability >2000 times/mm, does not meet the requirements is considered to be poor level; note 2: specification requirements ultimate bending strain >1900 times/mm, do not meet the requirements is considered to be poor level.