Asphalt concrete base [1] Cross-section of the field surface: polyurethane, synthetic turf or acryl asphalt wearing course: 3 cm asphalt binding course: 4 cm aggregate (particle size: 5-25 mm): 2 - 3 cm crushed stone: 8 - 10 cm sand: 10 cm original soil Properties of the base excellent durability wear resistance weather resistance