ASTM D6817 is the governing standard for EPS Geofoam used in geotechnical and civil construction applications in the United States.
What Is ASTM D6817?
ASTM D6817 establishes the minimum physical property requirements for EPS Geofoam used as a lightweight fill, insulation, or drainage material in geotechnical applications.
Density Grades Defined by the Standard
ASTM D6817 defines seven density grades: EPS 12, EPS 15, EPS 19, EPS 22, EPS 29, EPS 39, and EPS 46.
Compressive Resistance Requirements
Compressive resistance is the most critical property for load-bearing applications. ASTM D6817 specifies minimum values at both 1% strain and 5% strain.
Testing Methods Referenced
The standard references ASTM D1621 for compressive properties, D1622 for apparent density, D2842 for water absorption, and C203 for flexural strength.
How to Reference the Standard in Specifications
Reference the standard as 'ASTM D6817, Standard Specification for Rigid Cellular Polystyrene Geofoam' and specify the required grade.
Key Takeaways
- ASTM D6817 defines 7 EPS Geofoam grades from EPS 12 to EPS 46
- Compressive resistance at 1% strain is the primary design value
- Always require certified test reports (CTRs) from the manufacturer
- Check state DOT supplemental specifications for additional requirements
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