Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of ballast mat for vibration & noise reduction in China, also supports customized service with low price. Please feel free to buy cheap ballast mat for vibration & noise reduction made in China here from our factory.
Product Introduction
The rail pad (also termed tie pad or rail seating pad) serves as a critical interface between the steel rail and sleeper (or track slab). This essential component performs multiple core functions within the fastening system. The pad cushions train-induced impacts and vibrations, reducing fatigue damage to both rails and sleepers. By distributing wheel-rail loads, this engineered layer prevents localized stress concentration that could cause sleeper cracking. Rail pads enable precise rail surface elevation adjustment, ensuring optimal track geometry. Certain pads incorporate insulating properties to prevent track circuit interference. Furthermore, the pad protects the sleeper's top surface from direct abrasion by the rail. Ultimately, this component enhances overall fastening system stability, ensuring operational safety and extending track service life.
A ballast mat is an elastic layer structure. It is installed between the ballast (crushed stone) layer of a railway track and the top of the subgrade (soil base).
It mainly consists of two parts:
- The upper layer is a perforated concrete slab. It provides support and distributes pressure.
- The lower layer is a highly elastic rubber pad. It provides cushioning and vibration damping.
Its core functions are:
- Reducing ballast particle wear, breakage, and embedment into the subgrade.
- Effectively preventing ballast fouling.
- Maintaining track bed drainage performance.
- Reducing track settlement and irregularities.
- It absorbs impact and vibration from train loads. This significantly lowers track bed maintenance requirements. It extends the service life of the track structure.
Sub Ballast protection mat is especially suitable for areas with poor subgrade conditions, heavy haul transport, or high-speed rail sections. It is a key engineering measure to enhance track stability and durability.
Rail Component Coordination with Ballast Mat
Ballast Mat Component Interplay
| Component | Cooperative Function with Ballast Mat |
| Rail Pad | Coordinates vibration damping to create a stiffness transition interface |
| Elastic Rail Clip | Maintains gauge stability and reduces transverse loads on the ballast mat |
| Rail Guide Plate | Constrains rail displacement to minimize ballast bed disturbance |
| Sleeper | Acts as force transfer medium requiring full contact with ballast mat |
Ballast pad material--Polyurethane
The polyurethane ballast mat is applied between the ballast and subgrade in ballasted tracks. This engineered component consists of a cellular elastic polyurethane sheet bonded with nonwoven fabric on one surface. During installation, the nonwoven fabric layer must face upward toward the ballast layer. This orientation prevents sharp ballast particles from puncturing the polyurethane elastomer. When operational, portions of the ballast embed into the mat's surface. This embedding effect significantly increases the contact area between the ballast bed and subgrade. Simultaneously, train loads distribute more uniformly across the track structure.
| Polyurethane material properties | |
| Material Density | 800 - 1200 kg/m³ |
| Hardness (Shore A/D) | 60 - 90 Shore A |
| Tensile Strength | ≥30 MPa |
| Compression Strength | ≥120 MPa |
| Elongation at Break | ≥300% |
| Operating Temperature Range | '-40°C to +80°C |
| Noise Reduction | Up to 10 dB(A) |
| Vibration Damping | Up to 80% |
| Fire Retardancy | Class B/Class V-0 |
| Customization | Available |
Subgrade Precision Leveling：Compact subgrade surface to absolute flatness, remove sharp objects
Mat Directional Placement：Unroll ballast mat ensuring nonwoven fabric surface faces upward toward ballast layer
Seam Tight Overlapping：Overlap adjacent mat edges, seal joints with specialized tape
Sleeper Accurate Positioning：Fix sleeper locations at designed intervals, anchor through mat layer
Ballast Layered Filling and Compaction：Fill ballast in two stages: initial static compaction followed by vibratory densification
GNEE RAIL specialize in manufacturing and exporting high-performance polyurethane ballast mats compliant with EN 13450, UIC 713R, and CRCC certifications. Our products serve 40+ countries across heavy-haul corridors, high-speed networks, and mining railways.
Our Sub Ballast Mat advantages for you
- Most effective method of achieving a defined level of elasticity in areas with a low ballast height
- Increased track quality
- Less vibration and structure-borne noise in ballasted track
- Optimum embedding of the ballast and improved load transfer
- Proven durability after more than 30 years in use
- Quick and simple installation
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