Concrete sleeper manufacturing process
Our GNEE concrete sleeper manufacturing process include following important steps. Now, let us see them together.
- Mold Preparation
Molds are prepared in required shapes and sizes. Lubricant is applied to prevent concrete from sticking to the molds.
- Strand Tightening
Strands or cables are cut and placed into the molds, fixed at both ends with anchors, and tensioned using hydraulic jacks.
- Concrete Pouring
Premixed concrete is poured into the molds and compacted properly using table vibrators to ensure uniform distribution.
- Steam Curing
Molds with concrete undergo steam curing for at least 11-12 hours, with specific temperature and time intervals to achieve desired strength and consistency.
- Mold Removal
After curing, molds are removed carefully, and the concrete sleepers are ready for further processing.
- Wet Curing
Concrete sleepers undergo wet curing for at least 14 days to enhance strength, durability, and stability.
- Testing and Transportation
Concrete sleepers are sampled, inspected, and tested for quality assurance. They are then transported to the site, where steel plates are fixed according to gauge length, and laid on the track.