QSF- EPS geofoam is used in geotechnical applications such as lightweight fill for construction on soft ground, for slope stabilization, and retaining wall or abutment backfill; as well as for roadway and runway sub-grade insulation and foundation insulation.
Overview of EPS geofoam
EPS Geofoam products help reduce and absorb the impacts of naturally occurring forces such as gravity and earthquakes rather than trying to strengthen or stiffen a structure to resist the forces. The two key properties that make EPS geofoam so attractive in design and construction are its low density for stress and deformation-related construction problems, and its thermal insulation properties that help combat frost-heave problems. The light weight fill applications are required by EPS Geofoam of density from 15 to 22kg/m3. This low density is only about 1-2% of the soil and rock , making EPS Geofoam a superior, ultra light weight fill material that significantly reduces the stress on underlying subgrades. The lighter load reduces settlements and boosts stability against bearing and slope failures. Because it is approximately 98 to 99 % air by volume, Geofoam is a very efficient thermal insulation. EPS Geofoam can be produced with higher densities to obtain the higher R-values preferred for insulation purposes , as well as to achieve lower deformation. EPS geofoam has been used in roads and airfields pavements and railway track systems, beneath refrigerated storage buildings, sports arenas and storage tanks to prevent ground freezing and heaving, and below –ground buildings segments to reduce seasonal heating and cooling requirements.
High compressive strength – makes EPS geofoam durable and resistant to damage over time.
Low moisture absorption – moisture absorption rate increase as density increases, but are still minimal.
Low interface friction—in direct shear tests, the interface friction between sand and EPS geofoam is comparable to the internal friction of the sand alone.
- Road construction
- Bridge abutment
- Slope stabilization
- Stadium and theatre seating
- Airport runways
- Noise and vibrations
- Green roofs
- Retaining and buries wall backfill