Also in the railroad industry, this expansive polyurethane resin is the aid needed to compact soil, fill cavities, waterproof and in this way consolidate structures.
EXPANDUR, in fact, is among the products made by Resimix that help prevent seepage, collapse, and other problematic events, which result, for example, from major adverse weather conditions, surface landsliding, severe subsidence of water tables with ground subsidence, or other situations.
But let’s look in detail at the features of EXPANDUR.
What is EXPANDUR?
It is an expanding polyurethane foam with varying degrees of expansion:
- The one with degree 0 retains its volume,
- Those with higher degrees multiply their volume up to 30 times.
Once mixed, these expansive polyurethane resins swell and harden.
For different needs, structural and environmental, we offer you three expansive resins:
- EXPANDUR 30 for fast-curing injections,
- EXPANDUR 24, a mildly expansive resin for injections,
- EXPANDUR 20 that requires the presence of water to expand.
Want to learn about our other products for tunnel, bridge and railroad rehabilitation? Click here!
Which expanding foam to choose for rehabilitation and consolidation of structures?
The consistency of foams is chosen according to their use: for example, to fill very large cavities, a low-hardness foam is sufficient.
EXPANDUR also acts in the presence of water, and the speed of action varies from a few seconds to several minutes depending on the temperature and humidity of the environment (with water the extent of expansion increases).
Do you want to know how we work?
In conclusion: when to resort to this expansive resin?
These foams in the railroad industry are used to fill the volume of cavities, the voids that sometimes form in the ground under tracks, in rock for example.
Injections of EXPANDUR are useful in consolidating the base and structure so that work already begun can continue, prevent adverse advents, or in support of rehabilitation and consolidation work.
We are also experts in the railway industry: ask us for advice or more information about our products.