Scope of application

Adopting a hybrid structure approved by the International Association of Athletics Federations, the surface layer consists of EPDM weather-resistant, environmentally friendly colored granules, while the base material is a 1:5 PU blend containing rubber particles. The construction process is simple and meets international competition standards. The standard thickness is 13 mm. This product is suitable for large- and medium-sized standard sports venues.

Performance characteristics

1. Environmentally friendly, non-toxic, and compliant with all environmental standards for outdoor sports venues. 
2. Suitable for all-day use in any season and under varying temperatures, maintaining high-quality performance at all times. Can be used immediately after rain, extending usable hours and boosting site utilization rates. 
3. Possesses moderate elasticity and rebound force, which can reduce physical exertion and enhance athletic performance. 
4. Moderately absorbs impact forces from the feet, reducing the risk of sports injuries and making it suitable for both long-term practice and competition. 
5. It will not fade, chalk, or soften due to pollution from ultraviolet radiation, ozone, or acid rain, and can maintain its vibrant color for a long time. 
6. Highly wear-resistant, capable of meeting the long-term, high-frequency usage demands of schools at all levels. 
7. Excellent compression resistance—will not lose its elasticity even under the heavy pressure of track and field equipment. 
8. At the 100-meter starting line—where forces are significant and usage is frequent—the surface won’t be damaged by spiked shoes or starting blocks. It features a robust elastic layer and cushioning layer that effectively absorb powerful impacts without compromising the surface’s integrity. 
9. Strong adhesion to the substrate, effectively inhibiting moisture migration, and free from phenomena such as bubbling or delamination. The surface is smooth and flat, helping to prevent sports injuries caused by falls during vigorous physical activity. 
10. Special high-elasticity EPDM granules and a PU topcoat provide a soft surface color and a granular texture, effectively preventing glare and reflection from sunlight. The surface is aesthetically pleasing and highly durable, and can be customized with a variety of color combinations.

Construction technology

01. Runway Base Layer: The base typically consists of either a cement or asphalt foundation. For cement foundations, the cast-in-place thickness should be between 100 and 200 millimeters. After pouring, the curing period is approximately 28 days. The base’s moisture content must not exceed 8% before proceeding with the surface layer construction. Asphalt foundations generally have a thickness of 100 millimeters; after compaction, they must be cured for at least one week before the surface layer can be applied. Before applying the surface layer, the cement foundation must be thoroughly ground across its entire surface. After grinding, the surface must be thoroughly cleaned with water, allowed to dry completely, and then coated with a single-component penetrating primer. For asphalt foundations, construction can only proceed once the surface is completely free of moisture and dirt. 
02. Sealing Primer Layer: For cement-based surfaces, apply a single-component penetrating primer directly from the container after thoroughly mixing it. Roll the primer evenly over the entire surface. The next construction step can only be carried out once the primer has completely dried and no longer sticks to your feet. For asphalt-based surfaces, use a single-component asphalt-specific sealing emulsion: mix 1 kg of the emulsion with 2.5 kg of sand, 2.5 kg of cement, and 2.5 kg of water until thoroughly blended. Then, spread the mixture evenly over the entire surface using a large rubber trowel until the asphalt surface is completely covered to a thickness of at least 1 mm. The next construction step can only be carried out once the entire surface has fully dried. 
03. PU with Granular Mixing Layer: After mixing the two-component 1:5 PU + granules + runway-specific catalyst, use the following formulation: 50 kg of PUB material with red pigment + 10 kg of PUA adhesive + 20 kg of granules + 0.3 kg of runway-specific catalyst + 15 kg of leveling agent. Thoroughly mix all ingredients together until uniform. Then, using a thickness gauge and a large-toothed iron rake, apply the mixture in one go across the entire track at the designed thickness. If the surface is uneven and there’s standing water, prepare another batch using the same formulation and use an aluminum alloy screed to level it. Only after the entire surface has completely dried can you proceed to the next stage of construction. 
04. First layer of runway surface coating: After mixing the two-component 1:2 PU, surface spray granules, runway-specific catalyst, and leveling agent, use the following formulation: For each batch, combine 20 kg of red pigment for the surface spray B material, 10 kg of adhesive for the surface spray A material, 25 kg of surface spray granules, 0.15 kg of runway-specific catalyst, and 1.5 kg of leveling agent. Thoroughly mix all ingredients until uniform, then apply the mixture to the entire track using a track spraying machine, proceeding in a back-and-forth pattern from one end to the other. Do not proceed to the next layer of work until the entire surface has completely dried. 
05, Second layer of runway surfacing: Use the same two-component 1:2 PU system—after mixing the surface coating particles, runway-specific catalyst, and leveling agent—the following ingredients should be combined: 20 kg of red pigment for Surface Coating B, 10 kg of adhesive for Surface Coating A, 25 kg of surface coating particles, 0.15 kg of runway-specific catalyst, and 1.5 kg of leveling agent. Thoroughly mix all these components together until uniform. Then, using a runway spraying machine, apply the coating to the entire surface in a reverse direction—moving backward from one end to the other, alternating left and right, in the opposite direction to that used for the first surface-coating layer. Only after the entire surface has completely dried can you proceed to apply the next layer. 
06. Runway marking layer: The runway marking paint is a proprietary oil-based marking paint developed by our company. After thoroughly mixing Components A and B at a 1:1 ratio, it can be applied using a runway marking machine or an air compressor for spray application.

Construction drawing illustration