Dedicated to advancing the use of fabricated geomembranes through education, research, and technology transfer.

Factory fabrication reduces field welding, reduces installation time and costs, allows modular construction and provides consistent seam and liner quality.


FGI conducts research on many topics for a variety of geomembrane types. The University of Illinois Civil and Environmental Engineering Department provides the laboratory support and technical expertise on a variety of subjects. Some of the research topics are listed below. FGI Members suggest research projects based upon needs they see in the practical experience of designing, specifying, fabricating and installing fabricated geomembranes.

  • Coefficient of Thermal Expansion
  • Impact of Elevated Temperatures on Geosynthetics
  • Long-term Geomembrane Durability
  • Develop FGI Specification for PVC geomembranes
  • Develop FGI Specification for Flexible Supported Polypropylene
    (fPP-S) and Unsupported (fPP) Geomembranes
  • Tongue Tear Resistance Testing
  • Geomembrane to Non-Geomembrane Comparison Chart
  • Specification Development for Arid Climates
  • Quantitative Cost Comparison of Fabricated and HDPE Geomembranes
  • Hydrostatic Resistance Testing of Geomembranes
  • Develop Cross-Seam Welding Guideline
  • Direct Shear Interface Testing Program Using Various Fabricated Geomembranes
Contact FGI for More information on research