MEASURING GEOSYNTHETIC CREEP: THREE METHODS

Geosynthetics often are used in such mechanically stabilized earth structures as segmental retaining walls, steepened slopes, and embankments over weak foundations. In all of these applications, reinforcement geosynthetics may be required to endure exposure to high tensile stresses for long periods of time--typically 75-plus years. The load-strain-with-time behavior (creep) of the reinforcement geosynthetic is a significant design consideration, particularly because these materials are called upon to perform for such long periods. This article presents a quick review of the pluses and minuses of conventional creep testing, time-temperature superposition (TTS) principals, and a new approach to creep testing--the stepped isothermal method (SIM). While each method possesses characteristics that are particularly desirable for some applications, conventional creep and TTS remain the methods of choice for widely accepted performance-evaluation methods. SIM appears to provide significant cost and time benefits and is gaining acceptance within the regulatory environment. Further, SIM shows great promise in quality assurance, new product development, and other areas, such as research on synergistic effects.

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  • Corporate Authors:

    Industrial Fabrics Association International

    345 Cedar Building, Suite 450
    St Paul, MN  United States  55101-1088
  • Authors:
    • Sandri, D
    • THORNTON, J S
    • Sack, R
  • Publication Date: 1999-8

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 26-29
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00798413
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 14 2000 12:00AM