Railroad Composite Sleeper
The composite sleeper is a railway sleeper made of a new material called continuous glass fiber reinforced polyurethane foam. Concrete sleepers have been popularized in countries around the world, but lack of flexibility is also a serious drawback. Although the wooden sleepers are flexible, the total amount of forest resources in the world has decreased sharply in recent years. In addition, the wooden sleeper is easy to be corroded. If it is treated with anticorrosion, it will cause certain influence on the environment. For these reasons, the era of heavy use of wooden sleeper has become a thing of the past. Due to the use of new materials, the composite sleepers not only inherit
the advantages of the two types of railway sleepers, but also avoids their drawbacks. Our composite sleepers are more and more popular in the world, and have been exported to the United States, India, Chile and other countries.
GNEE composite sleeper material property
| Item | JIS E1203:2007 Strength | (CJ/T399-2012)
GNEE Sleeper Strength |
| Material Strength | Bending Strength | min. 70 N/mm2 | min. 80 N/mm2 |
| Young 's modulus in flexure | min. 6000 N/mm2 | min. 7000 N/mm2 |
| Withstand bending load | min. 170 kN | min. 170 kN |
| Longitudinal compressive strength | min. 40 N/mm2 | min. 50 N/mm2 |
| Shearing strength | min. 7 N/mm2 | min. 7 N/mm2 |
| Adhesion shearing strength | min. 7 N/mm2 (base-material breakage) | min. 7 N/mm2 (base-material breakage) |
| Electrical Properties | Alternating-current breakdown voltage | min. 20 kV | min. 20 kV |
| Direct-current insulation resistance | min. 1 X 1010 Ω | min. 1 X 1010 Ω |
| Pulling Strength | Track spike pulling strength | min. 15 kN | min. 20 kN |
| Screw spike pulling strength | min. 30 kN | min. 40 kN |
| Unit volume mass | 0.74土 0.1 g/cm3 | 0.74土 0.1 g/cm3 |
| Amount of water absorption | max. 10 mg/cm2 | max. 10 mg/cm2 |
Advantages and special features:
Simple installation with conventional track-construction technology
Low maintenance costs
Ideal suitability for turnout and bridge projects in mass transit, subways and railroads
Easy to lay using conventional track construction techniques
High strength and excellent damping
Resistance in all challenging climatic regions
No need for toxic chemicals
100% recycled and recyclable
With an expected shelf life of over 40 years, composite sleepers score over wooden sleepers due to usage of recycled materials like HDPE, crammer rubber, glass reinforcement and fillers. Also, these sleepers are not susceptible to rupture, decay or insect infestation and drive down the overall operating costs for railways besides being easy to maintain as well.
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