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Projex Sub Ballast Mat Technical Information

Case StudiesApplication & InstallSub-Ballast Mat Products

Projex Damtec SBM is available in rolls of 10mm or 20mm thicknesses.

It can handle axle load in excess of 40 TAL.

Certifications & Approvals

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.
  • Approved according to the Deutsche Bahn standards
  • Meets V-Line Type approval.


AXLE LOAD: 25 tonne, > 200km/h 25 tonne < 200km/h
35 tonne, < 200km/h 40 tonne < 200km/h
AREAS: Heavy (Passenger) & Heavy Haul Lines, Freight & Light Rail Systems Heavy (Passenger) & Heavy Haul Lines, Freight & Light Rail Systems
THICKNESS: 10mm 20mm
WIDTH: 1250mm 1250mm
LENGTH: 6000mm 4000mm
WEIGHT: 6.5 kg/m2 13.0 kg/m2
CSTAT: 0.12 N/mm3 +/- 0.02N/mm3(DIN 45673-5) 0.06 N/mm3 (DIN 45673-5)
BENEFITS Reduce Vibrations Reduce Vibrations, Structure & Air Borne Noise


For any assistance, please contact our experts at Projex Group.

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Technical Data Sheets


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 liaised with operators, engineers, project managers and contractors.

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The Projex Mission is to source and supply technically excellent products to meet the needs of owners, designers, insurers and operators of buildings and structures for specialist protection against water, industrial liquids, impact and corrosion risks.