For decades, RAVATHERM XPS extruded polystyrene foam thermal insulation has been successfully applied for the various purpose thermal insulation of roads, railway tracks, airport runways, and skating rinks, and for other structures under the ground level that is exposed to the danger of frost, primarily in the Scandinavian countries and in Russia.
In such cases the physical properties of the closed-cell polystyrene foam resulting from its unique material structure are especially important.
• excellent mechanical strength and high durability
• high, long-lasting thermal insulation performance
• lightweight and easy to handle
• easy to cut with simple tools
• not sensitive to moisture
• frost resistant
In the grim application conditions RAVATHERM XPS thermal insulation’ high strength, viscoelastic behavior, and resistance against moisture and frost are exploited in a complex way.
In certain soil types frost can cause raising - the frost induces the movement and expansion of the soil - that can damage roads, railways, pipeline systems, and building foundations.
An efficient solution for the protection of these structures is thermal insulation using RAVATHERM XPS, which decreases the danger of frost damage and the associated repair and maintenance costs. This method of the prevention is often simpler and more cost-efficient than the construction of deep foundations resting on gravel beds.