Projex Damtec SBM Product Brochure

What is Projex Damtec Sub-Ballast Matting (SBM)?

The Projex Damtec Sub-Ballast Mat (SBM) is an isolation and protection matting for all types of railway construction & infrastructure maintenance in heavy rail, heavy haul rail, high speed, rapid transit and light rail networks / systems.

The Sub Ballast Mat absorbs vibrations and considerably reduces acoustic emissions as well as structure-borne sound transmissions. It protects sub-grade formation and reduces frequency of the ballast maintenance requirements through reduced vibration and better-balanced loading.

Projex Damtec Sub Ballast Mat conforms to the ASA and TfNSW Standard for Ballast (T HR TR 00192 ST), Section 11.6. Track stiffness and ballast mat.


Projex Damtec Sub-Ballast Matting Models and Complementary Product

Projex Damtec Sub-Ballast Mat is available in 2 thicknesses:

  • SBM Roll 10mm Thick
  • SBM Roll 20mm Thick

Projex SBM Joining Tape (1mm x 100mm x 20m)

The tape must be used at all time to join the rolls of SBM together and complete the entire system.

Why use the Projex Damtec Sub-Ballast Mat?

  • German manufactured, superior performance
  • Proven and tested technology
  • Extremely cost effective
  • Easy installation
  • Environment – friendly
  • Stock held in Australia
  • Range of dynamic static stiffness applicable to different track requirements and applications
  • Complies with quality, regulatory & engineering standards
  • Made from special mixture of PU foam and high-quality virgin rubber granules with a PU elastomer bonding agent
  • Extremely tough & durable
  • High kinetic energy absorption
  • Ideal for the insulation of acoustic & vibration emissions

Other advantages

  • Protects the sensitive sealing (waterproofing) layer against damage from ballast
  • Reduces structure-borne noise
 and secondary air-borne noise
  • Protects adjacent buildings by reducing vibrations
  • Prolongs the lifetime of the ballast
  • Permeable to water
  • Position and level of the track remain stable in long term
  • High level of elasticity allowing for the absorption of undulations in the bedding layer
  • Can be used for mass spring systems
- uncomplicated installation
  • High degree of performance with axle loads in excess of 40 TAL

Choose what the world’s best railway networks use

Projex Group has over 25 years experience in servicing the domestic railway industry working closely with many public and privately owned railway networks. During this time we have liased with operators, engineers, project managers and contractors in specifying and supplying Projex Damtec Sub-Ballast Mat Australia wide.

The Projex Damtec Sub-Ballast Matting can also be manufactured specifically to suit individual job/client requirements and infrastructure applications.

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