News - Prefabricated Rubber Running Track Subbase Foundation

Before construction, prefabricated rubber running tracks require a certain level of ground hardness, meeting the hardness standards before construction can proceed. Therefore, the subbase foundation of prefabricated rubber running tracks must be solidified.

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Concrete Foundation

1. After completion of the foundation, the cement surface must not be too smooth, and there should be no phenomena such as sanding, peeling, or cracking.

2. Flatness: Overall pass rate should be above 95%, with a tolerance of within 3mm over a 3m straightedge.

3. Slope: Should meet sports technical specifications (lateral slope not greater than 1%, longitudinal slope not greater than 0.1%).

4. Compressive strength: R20 > 25 kg/square centimeter, R50 > 10 kg/square centimeter.

5. The foundation surface should be free of water blocking.

6. Compaction: Surface compaction density should be over 97%.

7. Maintenance period: Above 25°C outdoor temperature for 24 days; between 15°C and 25°C outdoor temperature for 30 days; below 25°C outdoor temperature for 60 days (watering frequently during the maintenance period to remove alkaline components from volatile cement).

8. Trench covers should be smooth and transition smoothly with the track without steps.

9. Before laying prefabricated rubber tracks, the base layer should be free of oil, ash, and dry.

Asphalt Foundation

1. The foundation surface must be free from cracks, obvious roller marks, oil stains, unblended asphalt chunks, hardening, sinking, cracking, honeycombing, or peeling.

2. The foundation surface should be free of water blocking.

3. Flatness: The pass rate for flatness should be above 95%, with a tolerance of within 3mm over a 3m straightedge.

4. Slope: Should meet sports technical specifications (lateral slope not greater than 1%, longitudinal slope not greater than 0.1%).

5. Compressive strength: R20 > 25 kg/square centimeter, R50 > 10 kg/square centimeter.

6. Compaction: Surface compaction density should be over 97%, with dry capacity reaching over 2.35 kg/liter.

7. Asphalt softening point > 50°C, elongation 60 cm, needle penetration depth 1/10 mm > 60.

8. Asphalt thermal stability coefficient: Kt = R20/R50 ≤ 3.5.

9. Volume expansion rate: < 1%.

10. Water absorption rate: 6-10%.

11. Maintenance period: Above 25°C outdoor temperature for 24 days; between 15°C and 25°C outdoor temperature for 30 days; below 25°C outdoor temperature for 60 days (based on volatile components in asphalt).

12. Trench covers should be smooth and transition smoothly with the track without steps.

13. Before laying prefabricated rubber running tracks, clean the foundation surface with water; the base layer should be free of oil, ash, and dry.

Prefabricated Rubber Running Track Application

Prefabricated Rubber Running Track Parameters

Specifications	Size
Length	19 meter
Width	1.22-1.27 meter
Thickness	8 mm - 20 mm
Color: Please refer to the color card. Special color also negotiable.

Prefabricated Rubber Running Track Color Card

Prefabricated Rubber Running Track Details

Wear-resistant layer

Thickness: 4mm ±1mm

Honeycomb airbag structure

Approximately 8400 perforations per square meter

Elastic base layer

Thickness: 9mm ±1mm

Prefabricated Rubber Running Track Installation

1. The foundation should be smooth enough and without sand. Grinding and leveling it. Be sure it does not exceed ± 3mm when measured by 2m straightedges.

4. When materials arrive at the site, the appropriate placement location must be selected in advance to facilitate the next transportation operation.

7. Use a hair dryer to clean the surface of the foundation. The area to be scraped must be free of stones, oil and other debris that may affect the bonding.

10. After each 2-3 lines are laid, measurements and inspections should be made with reference to the construction line and material conditions, and the longitudinal joints of the coiled materials should always be on the construction line.

2. Use polyurethane-based adhesive to seal the surface of the foundation to seal the gaps in the asphalt concrete. Use adhesive or water-based base material to fill the low areas.

5. According to the daily construction usage, the incoming coiled materials are arranged in the corresponding areas, and the rolls are spread on the foundation surface.

8. When the adhesive is scraped and applied, the rolled rubber track can be unfolded according to the paving construction line, and the interface is slowly rolled and extruded to bond.

11. After the entire roll is fixed, transverse seam cutting is performed on the overlapped portion reserved when the roll is laid. Make sure there is enough adhesive on both sides of the transverse joints.

3. On the repaired foundation surface, use the theodolite and steel ruler to locate the paving construction line of the rolled material, which serves as the indicator line for running track.

6. The adhesive with the prepared components must be fully stirred. Use a special stirring blade when stirring. The stirring time should not be less than 3 minutes.

9. On the surface of the bonded coil, use a special pusher to flatten the coil to eliminate air bubbles remaining during the bonding process between the coil and the foundation.

12. After confirming that the points are accurate, use a professional marking machine to spray the running track lane lines. Strictly refer to the exact points for spraying. The white lines drawn should be clear and crisp, even in thickness.

Post time: Jun-26-2024