
With ultra-low sensitivity to environmental factors, e.g. water, frost and acid rain, RockXolid® stone wool based anti-vibration mats exhibit outstanding efficiency and durability even after decades of operation under harsh climatic conditions. This has been verified, for instance, by an exhaustive Norwegian field study of the long-term functional performance of a track that had been vibration isolated in 1978 using stone wool based anti-vibration mats.
Effective Anti-Vibration Treatment with RockDelta Stone Wool
The RockXolid® solution consists of a full-contact, sheet-type resilient stone wool based support system that introduces a durable and high-efficiency spring element into the track structure. This provides for a decoupling the dynamic behaviour of the concrete slab and the track system effectively from the ground. Armed with unique material characteristics, including very low levels of material damping and excellent, proven long-term functional performance, the RockXolid® solution significantly aids the attenuation of ground-borne vibrations stemming from any type of floating slab track system.
RockDelta Stone Wool: Features, Advantages & Benefits
- Inorganic and inert material with fully retained functional performance throughout entire operational life span
- Outstanding longevity
- Proven track record
- Track anti-vibration experiences since 1974
- Vast report material documenting all aspects of performance
- Fire and smoke safe
- Euroclass A2 according to new CEN fire safety standard
- Minimum smoke generation (s1)
- No flaming droplets (d0)
- Inherently withstands more than 10000C
- Resilience virtually unaffected by key environmental factors
- Water, e.g. submersion from flooding
- Sub-freezing temperatures
- Soiling of the ballast bed
- Exposure to sunlight, e.g. pending installation on building site
- Memory-free, e.g. if subjected to flooding and subsequent drying
- High degree of resistance to chemical factors
- Outstanding durability of fibres in acid rain
- Resistant to all naturally occurring soil alkalis and acids
- Long term practical experiences and theory concur
- High degree of resistance to biological factors
- No nourishment for animals
- Unaffected by fungi and bacteria
- Very low levels of internal damping
- High-efficiency, almost ideal spring element
- Better vibration isolation above system resonance frequency
- Sustains very high levels of pressure
- RockDelta stone wool is 100% recyclable
- Excellent thermal insulation
- Helps protect track superstructure against frost heave
- Very high Lambda values



Installation of a RockXolid® solution with both horizontal and vertical sides at Metro Sul de Tejo in Portugal.
Selected Features of a RockXolid® Solution
- Excellent dynamic properties with inherent, first-rate volume compressibility
- Outstanding performance under any climatic conditions
- Exceptional life-span with virtually no change in functional performance
- Maintenance free solution
- Drainage built-in
- Highly cost-effective
- Fast and easy installation with no need for gluing
- Fully documented specifications based upon exhaustive tests
- Mats are easy to handle and easy to cut into desired size and shape
- No functional performance changes at sub-zero temperatures
- All products artificially aged to ensure outstanding long-term stability
- Excellent references
For more detailed information about the RockXolid® product range please click here.