EVALUATION OF METHODS AND MATERIALS USED TO ATTACH STRAIN GAGES TO POLYMER GRIDS FOR HIGH STRAIN CONDITIONS. FINAL REPORT

This report concerns the attachment of strain gages to polymer soil reinforcement grids (geogrids) for high elongation measurements, i.e. 5% and higher. Existing methods of attaching strain gages to geogrids are not suited for measurement of these high strains. Therefore, a research study was initiated to develop practical and repeatable procedures for attaching strain gages to geogrids to monitor large strains. The study involved examination of the factors which can affect the gage-geogrid bond during laboratory unconfined extension tests. Samples of different types of geogrids instrumented with strain gages are pulled at a constant rate and the deformations are measured. Detailed attachment procedures are developed and specific recommendations for strain gage and coating selection are given for two common types of geogrid.

  • Record URL:
  • Corporate Authors:

    Louisiana Transportation Research Center

    Louisiana State University, 4101 Gourrier Avenue
    Baton Rouge, LA  United States  70808

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Oglesby, J W
    • Mahmoodzadegan, B
    • GRIFFIN, P M
  • Publication Date: 1992-12

Language

  • English

Media Info

  • Features: Appendices; Figures; Photos; Tables;
  • Pagination: 66 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00666205
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/LA-92/265
  • Contract Numbers: 90-3GT(B)
  • Files: TRIS, USDOT
  • Created Date: Sep 8 1994 12:00AM