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Geofoam
GEOFOAM
Geofoam is expanded polystyrene (EPS) manufactured into large lightweight blocks. The blocks vary in size according to customer requirement. The primary function of geofoam is to provide a lightweight void fill below a highway, bridge approach or parking lot. EPS Geofoam minimizes settlement on underground utilities. Geofoam is also used in much broader applications, including lightweight fill, green roof fill, compressible inclusions, thermal insulation, and (when appropriately formed) drainage.
Geofoam consists of numerous open-ended tubes that are glued, bonded, fused or otherwise bundled together.” The cross-sectional geometry of an individual tube typically has a simple geometric shape (circle, ellipse, hexagon, octagon, etc.). The overall cross-section of the assemblage of bundled tubes resembles a honeycomb.
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Features and Benefits
- Lightweight and Rigid
- Safe and easy to handle
- Eliminates staged construction & preloading
- Engineered, Controllable and Predictable
- Inert over long periods of time
- Approx. 100 times lighter than soil
- 20 to 30 times lighter than other lightweight fill
- Perfect for earth stabilization, relieved load & civil engineering projects
- NPS has supplied large scale Geofoam projects
Geofoam vs Traditional Materials
Traditional earth materials are heavy, cause settlement, instability and/or lateral pressures. Alternative lightweight fill materials such as foamed concrete, waste tires, soil, woodchips and wood fiber have higher densities, are variable in their makeup and are not engineered, due to field execution variables.