DAMTEC® under ballast mats are products for decoupling and protection under rail systems, tested according to DIN 45673-5 (Mechanical vibrations – resilient elements used in railway tracks – laboratory test procedures for under ballast mats (UBM)). They reduce structure-borne noise and secondary airborne sound as well as vibration emissions. In the case of ballasted track, the service life is extended by a lower and more uniform load. At the same time, they also protect engineering structures and waterproofing. DAMTEC® SBM K sub ballast mat are supplied in rolls. SBM stands for the term “Sub Ballast Mat”, K for the material “rubber” (German: Kautschuk).

Our under ballast mats comply with the technical delivery conditions of Deutsche Bahn (DBTL 918071. The user releasing as a controlled design of the under ballast mat DAMTEC® SBM K 10V for ballasted track was approved by DB Netz AG from superstructure technical point of view under the TM‐titel 4‐2015‐10511 I.NPF 1 to Ril 804,820,824.

In addition to exact measurements of the static bedding modulus (C_stat1, C_stat2), the dynamic bedding modulus (C_dyn1, C_dyn2) and the mechanical fatigue strength, DAMTEC® Under Ballast Mats of the SBM K series are also tested for numerous other technical values such as water and freeze/taw resistance.

Typical examples of use:

• Structure-borne noise isolation on track systems in urban centres, especially in the immediate vicinity of buildings

• Reducing the noise and vibration emission to buildings with particularly high requirements for noise prevention (for example, opera houses, concert halls, test institutions, hospitals)

• Protecting against low-frequency vibrations caused by space-limiting surfaces (secondary airborne sound)

• Stabilising track constructions; particularly in high-traffic routes

Extract from the product portfolio for DAMTEC® SBM K Under Ballast Mats

Flat products:

• DAMTEC® SBM K 10 • K 10 V

• DAMTEC® SBM K 20 • K 20 V

• DAMTEC® SBM K 23 • K 23 V

Profiled Products:

• DAMTEC® SBM K 17/8 • K 17/8 V

• DAMTEC® SBM K 25/7 • K 25/7 V

V = version with laminated geotextile

DAMTEC® MSS products are decoupling and protective mats under rail systems tested according to DIN 45673-7 (Mechanical vibration – Elastic elements of the superstructure of rail tracks). They reduce structure-borne and secondary airborne noise and vibration emissions when used in „slab track“ (mass-spring system).
DAMTEC® MSS products are supplied in rolls. Mats are available on request.

Products:

• DAMTEC® MSS K 10

• DAMTEC® MSS K 20

• DAMTEC® MSS K 23

Products with wave cut profile:

• DAMTEC® MSS K 17/8

• DAMTEC® MSS K 25/7

DAMTEC® GTM products are elastic separating layers for decoupling of track slabs. They are attached to both the plate sole and the conical grouting holes. This minimizes vibrations emitted into the ground. In combination with DAMTEC® GTM, the slab becomes a lightweight mass-spring system with excellent structure-borne sound insulation.