초록 ▼

A permeable asphaltic concrete composition comprising a gradated mixture of aggregate rock which is skip-gradated. A 25 millimeter thick layer of the asphaltic concrete composition has a permeability to accommodate at least 40 centimeters per hour of rainfall. Such asphaltic concrete compositions ar

A permeable asphaltic concrete composition comprising a gradated mixture of aggregate rock which is skip-gradated. A 25 millimeter thick layer of the asphaltic concrete composition has a permeability to accommodate at least 40 centimeters per hour of rainfall. Such asphaltic concrete compositions are useful as a base for vertically-draining artificial turf systems.

대표청구항 ▼

A playing field comprising a layer of permeable artificial turf and a base comprising an asphaltic concrete composition having a permeability sufficient to accommodate at least 40 centimeters per hour of rainfall at 25 mm of thickness of concrete comprising asphaltic cement, anti-stripping agent, an

A playing field comprising a layer of permeable artificial turf and a base comprising an asphaltic concrete composition having a permeability sufficient to accommodate at least 40 centimeters per hour of rainfall at 25 mm of thickness of concrete comprising asphaltic cement, anti-stripping agent, and a gradated mixture of bulky aggregate rock having a size gradation such that the percentage by weight of the mixture passing through a sieve having square openings of (a) 38.1 millimeters is 100 percent, (b) 25.4 millimeters is 95-100 percent, (c) 19.0 millimeters is 75-95 percent, (d) 12.7 millimeters is 40-60 percent, (e) 9.52 millimeters is 30-40 percent, (f) 4.75 millimeters is 20-30 percent, (g) 2.36 millimeters is 15-25 percent, and (h) 0.075 millimeters is 0-3 percent.