Rail pads are elastic polyurethane mats which are interposed between steel rails and railway sleepers to protect the sleeper top from wearing and impacting.
The advantages of rail pad
- Reduce the noise that trains hitting on the rails and improve the comfort of the passengers
- The use of rail pad can decrease the abrasion of rails and prolong the service life of rail track
- Centering of loads on the supporting element
- Absorption of uneven contact surfaces between rail and support
- Reduction of noise and vibration
The rail pad function is to reduce fatigue cracking of the concrete ties, which is believed to be driven by impact and vibration from the passing train. When the wheel is running over the rubber pad, the latter's rigidity shall be enough to prevent larger movements which can result in the loose of rail clip. Such a load-deflection feature can be obtained by grooves in the rubber pad. Rubber rail pads are normally designed to a specified load-deflection characteristic.
3 main materials for railway pads
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm3 | 0.95-0.98 | 0.95 |
| Tensile Strength | Mpa | ≥19 | 19 |
| Elongation | % | >80 | 150 |
| Melting Point | ℃ | 170-190 | 190 |
| Insulation Resistance | Ω | ≥1×1010 | 3.5 ×1010 |
| Hardness | A | ≥98 | 98(A) |
| Technical Parameter | Unit | Value |
| Stiffness | KN | 90-130 |
| Hardness Shore A | ℃ | 72-80 degree |
| Electronic Resistance | Ω | ≥ 106 |
| Tensile Strength before Aging | Mpa | ≥12.5 |
| Elongation before Aging | % | ≥250 |
EVA: Polyethylene 80%, Vinyl Acetate 20%.
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm3 | 0.95-0.98 | 0.95 |
| Tensile Strength | Mpa | ≥15 | 16 |
| Elongation | % | >500 | 550 |
| Melting Point | ℃ | 170-190 | 170 |
| Insulation Resistance | Ω | ≥1×1010 | 5.0 ×1010 |
| Hardness | A | ≥90 | 92(A) |
GNEE's products are developed by high-tech, advanced technology and the detection means in combination with professional design institute, so our product quality has reached advanced level. Compared with other rubber pads, our product service life can be up to 3 times longer than them. The tests have proved that the pressure of more than 80 tons can be stable without deformation for our products. We sincerely hope that honored clients feel free to contact with us and further talk about business and cooperation. Contact us, we will provide you with first-class products!
