What is composite sleeper
Composite sleeper, also known as synthetic sleeper, is a type of railway sleeper made from continuous glass fiber-reinforced polyurethane foam material. It combines the characteristics of glass fiber-reinforced plastic composite and foam materials, offering advantages such as high strength, light weight, insulation, chemical resistance, and similarity to wood properties. Widely used in high-speed railways and subways, especially in situations where the use of concrete sleepers is limited.
Advantages of GNEE RAILWAY Composite Sleepers
● Strong support
Composite sleepers provide strong support, ensuring stability for railway tracks.
● Lightweight Design
Being lightweight makes handling, transportation, and installation more convenient.
● Insulation Properties
The material's insulation capabilities enhance safety by reducing electrical conductivity.
● Chemical Resistance
Composite sleepers resist chemicals, ensuring durability in various environmental conditions.
● Wood-Like Properties
Similar to wood, they allow for easy nailing and riveting during installation.
● Low Maintenance
Their durable nature translates to lower maintenance needs compared to traditional materials.
GNEE RAILWAY composite sleeper material property
|
Item |
JIS E1203:2007 Strength |
(CJ/T399-2012) |
|
|
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 |
|
Composite sleeper manufacturing process from GNEE RAILWAY rail factory
Material Preparation ➔ Mixing ➔ Molding ➔ Curing ➔ Finishing ➔ Quality Control ➔ Packaging
GNEE RAILWAY, a professional composite sleeper manufacturer
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