Description
Technical Parameters
Railway Composite Sleeper Basic Specifications & Material Composition
| Category | Specification | Details / Value |
|---|---|---|
| Product Name | Railway Composite Sleeper (Also known as: Polymer Sleeper, Synthetic Sleeper) | |
| Material Composition | Primary Matrix | Polyurethane (PU), Recycled Polyethylene (PE) / Polypropylene (PP), or Vinyl Ester. |
| Reinforcement | Glass Fibers, Carbon Fibers, or a blend. Provides tensile strength and stiffness. | |
| Fillers | Mineral fillers (e.g., fly ash, calcium carbonate) to increase mass, improve damping, and reduce cost. | |
| Key Physical Properties | Density | 1.2 - 1.8 g/cm³ (Lighter than concrete, comparable to or heavier than timber). |
| Color | Typically black or dark gray, but can be customized. |
Performance, Application & Comparative Advantages
| Category | Specification | Details / Value |
|---|---|---|
| Mechanical Performance | Flexural Strength | ≥ 50 MPa (Superior to timber, designed to resist bending under load). |
| Compressive Strength | ≥ 60 MPa (Adequate to resist rail seat forces). | |
| Stiffness (Modulus of Elasticity) | Deliberately engineered to be higher than timber but lower than concrete, offering an optimal balance of support and damping. | |
| Electrical Properties | Inherent Insulation | Excellent electrical insulator, ideal for track circuit areas and reducing stray current corrosion in electrified systems. |
| Acoustic & Vibration Damping | Noise Reduction | Superior vibration damping compared to concrete and steel, contributing to lower noise emissions. |
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