How about other materials for example I just found in my local distributos homepage sutch SicaDur 42 (Rapid High Strength Pourable Epoxy Grout)
www.sika.com
in datasheet USES section was:
Grouting of bearing plates, machine bases,
mechanical bridge joints, bridge bearings and rail
base plates (I like this one becose I have THK reils which need base
).
Flexural strength: 30 N/mm2 @ 20°C
Tensile strength: 20 N/mm2 @ 20°C
Modulus of 18 KN/mm2 @ 20°C
Elasticity: (static)
Density: 2.0 kg/litre
There was nothing mentioned about wibration damping characteristics
.
This is wery intresting material SikaRail® KC330/340 Polyurethane Flexible Resin Based Grout
USES
SikaRail KC330/340 provides a flowing, vibration absorbing load bearing resilient grout for:
* Bedding and bonding rail base plates to:
steel bridge decks, concrete bridge and tunnel slab
tracks, concrete sleepers
ADVANTAGES
* Out performs cementitious, epoxy and polyester
grouts under dynamic loading.
* Excellent noise and vibration damping.
maby this is the right material to tray out ?
and in datasheet is also sayed that Additional detailed information such as load/deflection graphs, spring coefficients, resonance frequency, damping factor etc are available on request.
I start to think Do i realy need this 10x vibration damping (over cast Iron)?
I think that the main benefit of these special compozit concretes are that i can make any solid shape myself for mutch lower price