Case History: Use of Tenax and Tensar Geogrids for Base Course Stabilization

Lakeshore Drive Improvements project, located on the north shore of Lake Pontchatrain in Mandeville, Louisiana was constructed in the summer of 1996 by T. L. James & Company with a geogrid reinforced base course. The majority of the work for the project consists of one and one-half miles of grading, drainage structures, base course and Portland cement concrete pavement. The original plans required the existing asphalt pavement surface and stabilized base course to be removed and replaced with eight inches of class II base course and eight inches of Portland cement concrete. A twelve inch subgrade layer would be required in soft areas as directed by the project engineer. The typical pavement sections are shown in appendix A. The geogrid reinforcement layer was added to the project by a plan change at the request of the contractor to replace the twelve inch subgrade layer. Tenax MS220 and Tensar BXI 100, geogrids of similar tensile modulus, performed equally in the field when exposed to similar conditions. For the geogrids to have a better chance of success on weak subgrades, the appropriate base course aggregate size should be specified in the contract.

  • Record URL:
  • Corporate Authors:

    Louisiana Transportation Research Center

    4101 Gourrier Avenue
    Baton Rouge, LA  United States  70808

    Louisiana Department of Transportation and Development

    1201 Capitol Access Road, P.O. Box 94245
    Baton Rouge, LA  United States  70804-9245
  • Authors:
    • Morvant, Mark
    • Holm, Ray
  • Publication Date: 1999-1

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Photos; Tables;
  • Pagination: 31p

Subject/Index Terms

Filing Info

  • Accession Number: 01836123
  • Record Type: Publication
  • Report/Paper Numbers: Technical Assistance Report No. 18
  • Files: TRIS, ATRI, STATEDOT
  • Created Date: Feb 21 2022 4:57PM