Composite sleepers railway for turnouts & crossings
Composite sleepers are ideal for ballasted railroad tracks, for example in the application of turnouts and crossings. The elasticity of the plastic provides good damping and reduces wear. Steel bars completely encased within the KLP® Hybrid Polymer Switch & Crossing Sleeper reinforce the railroad sleeper and optimize its stiffness. These composite sleepers have the same damping characteristics as timber sleepers, which makes them suitable for 1:1 replacement of wood. An untreated oak sleeper has a life span of roughly 10 years. The expected life span of the maintenance free KLP® Hybrid Plastic Sleepers is more than 50 years, which makes these composite sleepers a good investment with low Life Cycle Costs.
Composite sleeper features
The installation on site is simple, and the maintenance and repair works are greatly reduced.
It can keep the distance between the rail and the guard rail, the sleeper and the guard and the geometry of the line well, and the line condition is excellent and basically unchanged.
The sleeper surface is not easily peeled off.
Sizes available: sleeper height not less than 140mm, width not less than 200mm, and length upon customer need.
Product quality standard: CJ/T399-2012
Material strength
| Item | JIS E1203:2007 Strength | (CJ/T399-2012)
AGICO 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 |
Specifications Manual
1. Proof loads for polymer composite sleepers and timbers must be not less than 130kN (tf) in the underrail section and 98kN (tf) in the midsection.
2. When heated from 25°C to 70°C, the maximum increase in the length of polymer composite sleepers and timbers should be 5 mm, when cooled from 18°C to minus 70°C the maximum reduction should be 1 mm.
3. Iron spike pull-out resistance must be not less than 350 kgf/cm2.
4. Polymer composite sleepers and timbers are electrically isolated, electric impedance is not less than 20000 Ohm.
5. Consistency value of polymer composite sleepers and timbers is not less than 1000 kg/m3.
6. Elasticity modulus of polymer composite sleepers and timbers at bending is not less than 2300mPa.
7. Static flex cracking resistance of polymer composite sleepers and timbers is not less than 27 MPa.
8. Polymer composite sleepers and timbers must be used for building of new railway tracks and exploitation and maintenance of the old ones in accordance with reference documentation of Ukrazaliznytsia, production facilities and metropolitan railway.
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