Products – Spec 2
PLAYSAFE SURFACING FOOT TRACK 200 – POLYURETHANE STRUCTURAL SPRAY RUNNING TRACK
Description
Synthetic Track surface of water permeable design consisting of a polyurethane-bound black rubber base mat with a spray-applied polyurethane/red rubber blended coating installed over an asphalt base to a compacted thickness of 13 mm.
Materials
Base Mat
The rubber granules for the black paved base mat shall be recycled SBR rubber, processed and chopped to 1-3 mm in size, containing less than 4% dust and free of foreign debris.
EPDM Rubber
Rubber granules shall be man-made, containing a minimum of 20% peroxide cured EPDM, chopped, processed, have a density of 1.5 and graded to 0.5 – 1.5 mm in size. The EPDM granules shall be the same color as selected by the owner for the track surface.
Polyurethane Binder
BR/EPDM Base Mat: Binder for the Black base mat shall be a 100% MDI based single-component binding agent and solvent free. The binding agent must be specifically formulated for mixing with SBR and EPDM rubber granules.
Structural Spray Coating: The binder for the Structural Spray shall be a pigmented single-component polyurethane binder. The binding agent must be specifically formulated to mix with EPDM granules. The color is selected by the owner.
Line Paints
Lane lines and event markings shall be polyurethane or latex paint compatible with the track surface.
Physical Properties
| Thickness | 13mm |
| Color | TBD |
| Density | 0.75 – 0.78 |
| Hardness (ASTM D-2240) Shore A | (70 degrees F. 50–60) (140 degrees F. 45-55) (35 degrees F. 55-65) |
| Resiliency (ASTM D-2632) | 37-44% |
| Tensile Strength (ASTM D-412) | 80 psi @ 70 degrees F. |
| Elongation at Break (ASTM D-412) | 120% |
| Compression Set (ASTM D-395) | 90-95% @ 70 degrees F. over 24 hours |
| Compression of Friction (ASTM D-1894) | Dry: 0.70-0.75 Wet: 0.90-0.95 |
| Abrasion Resistance (ASTM D-501) | 0.25-0.425 grams loss after 1000 cycles |
| Tear Resistance (ASTM D-624) | 50 – 75 PSL |
| Chalking (ASTM D-822) | No charge after 1000 hours |
| Resistance to Spikes | Class 1 |
Composition Mixture
| Black Base Mat SBR Rubber Granules | 80% by weight |
| Polyurethane Binder | 20% by weight |
| Application Temperature | Min. 35 degrees F |
| Structural Spray Top Layer: | |
| EPDM Rubber Spray Granules | 40% by weight |
| Polyurethane Binder | 60% by weight |
Surface Preparation
The asphalt or concrete base should be sufficiently cured and cleaned in order for work to progress. Recommended cure time is 14 days for asphalt and 28 days for concrete.
Primer
The surface shall be primed with approved manufacturer polyurethane primer using and airless spray machine. Application range is 0.28 pounds per square yard. Allow 20 – 30 minutes for solvent in the primer to evaporate before starting installation.
Base Mat
The black rubber granules and polyurethane binding agent are blended together in a suitable mechanical mixer for a period of 2 – 3 minutes to insure proper coating of all rubber granules with the binder. The blended materials are then spread onto the asphalt base by means of a mechanical tandem leveler. The tandem leveler shall have a heated oscillating screed bar to obtain both smoothness and compaction. The heated screed bar normally works at a temperature of 158 – 176 degrees F. The laying procedure shall be bay to bay and limiting the length of the passes so as not to have any cold joints between the bays. Every day the traverse joint from the previous day shall be tack coated with binder to insure a good bond. The surface hardens through the reaction of the binder with humidity. Usually the surface can be walked upon the next day.
Structural Spray Top Layer
The base mat shall receive two coats of structural spray consisting of approximately 60% pigmented polyurethane structural spray binder and 40% pigmented EPDM structural spray rubber granules. Structural spray shall be applied in two coats so as to achieve a uniform application. Care shall be taken while spraying to protect the surrounding areas.
Striping
Painted lines and event markings shall be performed in conformance with the governing Track & Field regulations and shall include all lines and graphics required or directed by the owner. Compatible line paint in the desired colors shall be applied by means of an approved line striping machine capable of producing neat lines with sharp edges.
Guarantee
The contractor shall provide a written guarantee covering all workmanship and materials for a period of (5) five years from the date of final acceptance.
NOTICE: These specifications are merely guidelines for use by landscape architects, engineers and contractors. These specifications should be valuable to those who do not have extensive knowledge of synthetic running tracks. It will assist in maintaining high construction standards. Playsafe Surfacing, LLC, its agents and employees do not warrant the specifications as proper under all conditions.
These specifications were current at the time of publication but are subject to change at any time without notice. Please confirm the accuracy of these specifications with the manufacturer and/or distributor prior to installation.
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