空隙率/%
坡度/%
AC-13
SMA-13
2.0
≥7.1
≥5.1
2.5
≥6.8
≥4.9
3.0
≥6.5
≥4.7
3.5
≥6.3
≥4.6
4.0
≥6.0
≥4.4