Associated Products
Web Dampers & Void Fillers
With the development of the city tram and urban light rail, attention has focused on reducing as much of the perceived noise and vibration from consideration of both transmission and radiation. Web dampers are a simple means of assisting in the overall plan to minimise noise and vibration. Discrete lengths of tuned web dampers are stuck in situ to the rail web, between the sleepers. Further details are available on application.
Electrical Isolation Barrier Strips:
For slab track applications where the build up of contaminants, salts and dirt between the rails, can lead to a loss of track signalling, particularly when wet, a barrier isolation strip, EIBS, has been developed. This EIBS, in silicon rubber, is fitted in a groove cut in the slab track and is located in place by the use of high strength adhesives. Silicon rubber was selected because of its excellent resistance to dirt build up. Fire retardant grades are selected for use in tunnels.
Block pads:
Where concrete sleepers are laid directly onto concrete slab track, there is the danger of the concrete slab, being weaker than a pre-stressed sleeper, breaking under repeated loading. To alleviate this it is possible to consider the use of block pads under twin block or mono block sleepers. These can be part of a booted system, which also provides reduction in noise and vibration. Trackelast boots with FC907C, FC250A, FC213 (as in Terminal 4 of the London Underground), FC21 or microLAST block pads are available. SBR boots are also available to match twin block sleeper designs.
|
Grade |
Sample Thickness mm |
Hardness IRHD0 |
Density g/cc |
Static Stiffness kN/mm/m2 |
Dynamic Stiffness kN/mm/m2 |
Electrical Resistivity (Ohmns) |
|
Microlast TR 1-49 |
12 |
20 |
0.5 |
70 |
72 |
dc 100v 3.5x1011 Ohmns |
|
FC907C |
25 |
11 |
0.32 |
17.6 |
24.5 |
dc 500v 1012 Ohmns ac 500v 15 M Ohmns |
|
FC250 |
25 |
25 |
0.45 |
24.95 |
26.85 |
dc 500v 5X1011 Ohmns ac 500v 3 M Ohmns |
|
FC213 |
20 |
23 |
0.46 |
45.0 |
48.0 |
dc 500v 1010 Ohmns |
|
FC21 |
10 |
24 |
0.40 |
98.1 |
102.5 |
dc 100v 3 x 1013 Ohmns |
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Please contact our Webmaster with questions or comments. © Copyright 2007 Tiflex Limited. All rights reserved.
Information in this document and otherwise supplied to users is based on our general experiences and is given in good faith but, because of particular factors which are outside our knowledge and control and affect the use of products, no warranty is given or implied with respect to such information.
Specifications are subject to change without notice. Safe handling data sheet for these materials are available as as PDF downloads. Click here to download