ELASTIC COMPONENTS PROTECT
      TRACK BED STRUCTURES
Calenberg synthetic and natural rubber products deliver enhanced elasticity in trackbed structures and protect the overall track bed system thanks to their material characteristics.
This reduces maintenance and repair costs for our clients significantly.
 
Sub-ballast mats are available in different designs and rigidities for use with axle loads up to 250 kN and all train speeds.
The wear-resistant protective layer in USM G 1000 mats withstand mechanical impact such as those from ballast or light construction machinery passing over the mat without the granulate layer (isolating layer) being damaged.

Conical stud mats are used to meet project-specific requirements – from ballast protection in the case of a reduced ballast bed thickness through to efficient isolation of structure-borne sound and vibrations in mass-spring systems.

Using elastic rail pads and base plate pads in special rail fastening systems exploits the load-transferring effect of rails. Wheel forces acting on the rail are distributed across several support points, so that stress is greatly reduced on the directly affected rail support point.

 
 

Trackbed and sub-ballast mats

 

Short description

Calenberg track bed and sub-ballast mats (max. length 200 m) are made of synthetic and natural rubber and are available in various designs and rigidities for use at all train speeds and with axle loads up to 250 kN. These mats produce an effective reduction in vibration emissions from railway traffic.

The USM models are manufactured using high-grade rubber blends. They have a high mechanical load capacity and are permanently weather-resistant. The mats absorb virtually no water, excel thanks to their high electrical insulation resistance and provide drainage on the mat level.

The USM series is suitable for both ballasted and ballastless track systems.

Features

  • Reduction in stress load on the ballast
  • Increased long-term stability for the track position
  • Reduction in the dynamic wheel forces
  • Reduction in the track and vehicle stress load
  • Potential for reduction in ballast height – important on bridges
  • Reduction in track maintenance costs
  • No replacement required thanks to high fatigue strength
  • Expected service life min. 60 years

Short description

Calenberg track bed / sub-ballast mat USM 4000 series (max. length 200 m) is made of synthetic and natural rubber and primarily used at high train speeds and high axle loads up to 250 kN. This series produces an effective reduction in vibration emissions from railway traffic.
The studded mat is used to meet vibration engineering requirements – from ballast protection for reduced ballast bed thicknesses through to efficient isolation of structure-borne sound and vibrations in high speed railway lines as well as adaption of track stiffnesses in transition sections.

The USM series is manufactured using high-grade rubber blends. It has a high mechanical load capacity, is permanently weather-resistant and absorbs virtually no water. It excels thanks to its high electrical insulation resistance and provides drainage on the mat level.

The USM 4000 series is suitable for both ballasted and ballastless track systems.

Features

  • Reduction in stress load on the ballast
  • Increased long-term stability for the track position
  • Reduction in the dynamic wheel forces
  • Reduction in the track and vehicle stress load
  • Potential for reduction in ballast height – important on bridges
  • Reduction in track maintenance costs
  • No replacement required thanks to high fatigue strength
  • Expected service life min. 60 years

Description, application

USM G 1000 model series mats are used for all railway system types and axle loads up to 25 t, mainly for ballasted track. Different mat rigidities provide efficient structure-borne sound and vibration protection adapted to the specific project in the area surrounding the track. Moreover, the ballast is protected effectively against wear.

The mat comprises an insulating layer made of bound rubber granulate, which is covered by a wear-resistant solid rubber top layer. This top layer protects the insulating layer from potential mechanical damage caused by elements such as ballast.

The top layer also makes the mat water-tight and weatherproof, thus
contributing significantly to the product’s long service life.