Description
Technical Parameters
Composite Sleeper Application in Railways
| Category | Specification | Standard/Reference |
|---|---|---|
| Dimensions | - Length: 2500-2600mm (standard gauge) - Width: 250-300mm - Height: 150-200mm |
EN 13230-2, AREMA Fig.30-1-5 |
| Mechanical Properties | - Flexural strength: ≥100MPa - Compressive strength: ≥50MPa - Impact resistance: ≥15kJ/m² |
ASTM D6109, ISO 12856 |
| Fastening Compatibility | - Nabla/SKL clips - Screw spikes (requires pre-drilled inserts) - Adhesive bonding for special cases |
UIC 865, EN 13481-5 |
Composite Sleeper Types Comparison
| Type | Material Composition | Advantages | Limitations |
|---|---|---|---|
| GFRP | Glass fiber + epoxy resin | Highest strength, fatigue-resistant | Higher cost |
| Recycled Plastic | HDPE/PP + mineral fillers | 100% recyclable, chemical-proof | Lower load capacity |
| Hybrid (WPC) | Wood fibers + thermoplastics | Natural appearance, easier machining | Moisture absorption risk |
Installation Workflow
Subgrade Preparation:
Compact ballast to 95% Proctor density
Sleeper Placement:
Use nylon slings (avoid steel chains)
Align within ±2mm tolerance
Fastening:
Install clips/spikes at 50% torque initially
Final torque after 24h (compensation for settling)
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