Geosynthetic Accreditation Institute


ASTM D6638
Test Method for Determining Connection Strength Between Geosynthetic Reinforcement and Segmental Concrete Units (Modular Concrete Blocks)


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental
  • Lab. #4 - Geosynthetic Institute
  • Lab. #41 - SGI Testing Services, LLC

[Method List]

[Laboratory List]

[GAI page]