Permeable asphaltic concrete base for artificial turf

Claim 2

An aphaltic 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 75-90 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.

Claim 3

The composition of claim 1 comprising about 4.5 percent by weight of asphaltic cement.

Claim 4

The composition of claim 2 wherein the anti-stripping agent comprises hydrated lime at a level of 1 percent by weight based on the weight of the gradated mixture of aggregate solids.

Claim 5

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; wherein said composition exhibits stability as measured by the Marshall Method of Mix Design at 140° F. of at least 500 lb f .

Claim 6

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; wherein said composition exhibits stability as measured by the Marshall Method of Mix Design at 140° F. of at least 500 lb f .

Claim 7

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.

Claim 8

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.

Claim 9

The composition of claim 5 comprising about 4.5 percent by weight of asphaltic cement.

Claim 10

The composition of claim 6 wherein the anti-stripping agent comprises hydrated lime at a level of 1 percent by weight based on the weight of the gradated mixture of aggregate solids.

Claim 11

A playing field comprising a layer of permeable artificial turf, a layer of permeable polymeric foam cushion, 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.

Claim 12

A playing field comprising a layer of permeable artificial turf, a layer of permeable polymeric foam cushion, 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.

Claim 13

The composition of claim 8 comprising about 4.5 percent by weight of asphaltic cement.

Claim 14

The composition of claim 9 wherein the anti-stripping agent comprises hydrated lime at a level of 1 percent by weight based on the weight of the gradated mixture of aggregate solids.