Uses:
The most common uses of Geofoam are as a lightweight fill and as insulation. Some specific applications of Geo foam are outlined below.
Retaining Wall or Abutment backfill: EPS Geofoam behind retaining structures and below grade walls reduces lateral pressure, lowers settlements, improves waterproofing and provides better insulation than normal backfill materials. The low density and relatively high compressibility also limit horizontal forces against retaining structures during earthquakes.
Slope Stabilization: The density of EPS Geofoam is typically 50 to 100 times lower than soils, it is highly effective in improving the stability and safety of slope construction by minimizing the potential of failure surfaces between driving blocks and resisting blocks in a slope.
Pavement Insulation: As insulation, Geofoam has successfully been used as sub grade insulation for highways and runways. EPS Geofoam also reduces sub grade stress and deformation as well as offering protection against frost heaving.
Frost-protected Shallow Foundation: In cold climates, building foundations are required to extend below depths of expected frost penetration. This generally requires that houses be constructed with crawl space or basements below floor grade. With EPS Geofoam, homes in cold climates can be built with slab on-grade support. This significantly reduces construction and energy costs.
Geofoam Project Receives National Recognition and Federal Endorsement:
The American Society of Civil Engineers named Salt Lake City’s Interstate 15 Geofoam project the Outstanding Civil Engineering Achievement Award winner in 2002. Also of note, the Federal Highway Administration endorsed the use of EPS geofoam in highway construction as the material of choice.