Establishment of Rutting Model of Wheel-Tracking Test for Real-Time Prediction of Rut Depth of Asphalt Layers

Table 4

Properties of aggregates for SUP-20.

Item	Test result	Requirement	Test method
Angularity of coarse aggregate	100	≥85/80	ASTM D5821 [32]
Angularity of fine aggregate	46.6	≥45	AASHTO T304 [33]
Percentage of flat-elongated particles (%)	7.3	≤15	T 0312 JTG E20-2011 [25]
Sand equivalent (%)	68	≥45	AASHTO T 176 [34]