Geofoam

Geofoam

Geofoam is used in geotechnical applications including slope stabilization, lightweight fill and backfill for abutments or retaining walls. It is also employed for subgrade insulation under roadways and runways.

Expanded polystyrene (EPS) geofoam weighs approximately 1-2% of the weight of traditional fill materials. One truckload of expanded polystyrene geofoam can replace up twelve truckloads of traditional fill.

Expanded polystyrene (EPS) does not contain CFCs or blowing agents as compared to extruded polystyrene (XPS) geofoam products.  

 
 
 
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Applications:

  • Slope Stabilization

  • Roadway and Runway Insulation

  • Bridge Abutments

  • Embankments

  • Retaining Walls

  • Lightweight Fill for Landscaping

  • Utility Protection

  • Pavement Insulation

  • Stadium and Theatre Seating

  • Void Fill

Profiles:

 
 
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Blocks

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Slopes

 

 Material Grades

 

Great White Foam brand expanded polystyrene (EPS) is available in the seven material grades specified for geofoam applications under ASTM D6817.

 

Property Table:

Responsive Table
EPS Molders Material Grade ASTM D6817 Density, min. kg/m3 (lb/ft3) Compression Strength, min. @ 1% deform. kPa (psi)
GWF5 EPS12 11.2 (0.7) 15 (2.2)
GWF10 EPS15 15 (0.9) 25 (3.6)
GWF13 EPS19 18.4 (1.15) 40 (5.8)
GWF15 EPS22 21.6 (1.35) 50 (7.3)
GWF25 EPS29 28.8 (1.8) 75 (10.9)
GWF40 EPS39 38.4 (2.4) 103 (15)
GWF60 EPS46 45.7 (2.85) 128 (18.6)
 

Learn More:

  • ASTM D6817 / D6517M-15 : Standard Specification for Rigid Cellular Polystyrene Geofoam - ASTM.org

  • EPS Industry Alliance Resources - epsindustry.org

  • National Cooperative Highway Research Program (NCHRP) Report 529 - Guidelines and Recommendations for Geofoam Applications in Highway Embankments - nap.edu

Declaration of Compliance:

  • Compression strength, min @ 1% deformation comply with ASTM D6817 / D6817M-15 L Standard Specifications for Rigid Cellular Polystyrene Geofoam

 
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Dimensions

Molded expanded polystyrene (EPS) billets can be cut into manageable sizes. Molded billet sizes include:

3’ x 4’ x 14’

3’ x 4’ x 16’

3’ x 4’ x 17’

3’ x 4’ x 18’


Billet weight is important when planning your job. By splitting your billets into manageable sizes you can allow them to be handled by the site crew. The weight of material changes for each grade. Use our helpful calculator to determine your block weight.

Weight Calculator
 

Block Weight Calculator

 

When selecting your block size ensure you consider the material waste when cutting from the above mentioned billets. It is important to reduce scrap when possible to avoid inflating the project cost. Our helpful sales team can work with you to optimize your product further.