Repeated Uniaxial Compression Test of Permeable Friction Courses Mixtures under Seepage Field and Stress Field Coupling

Table 2

Technical properties of hard sandstone aggregate.

No.	Item	Unit	Requirements	Results
1	Stone crushing value	%	≤ 24	9.5
2	Los Angeles abrasion loss	%	≤ 26	10.4
3	Apparent relative density	—	≥ 2.60	2.912
4	Water absorption	%	≤ 2.0	0.8
5	Robustness	%	≤ 12	1.3
6	Flatness, elongated particles	%	≤ 10	9.0
7	Particle content smaller than 0.075 mm	%	≤ 1	0.6
8	Soft stone content	%	≤ 1.0	0
9	Polishing value	PSV	≥ 42	52
10	Adhesion level for asphalt	—	Level 5	Level 5