WIDE-WIDTH GEOMEMBRANE TESTING

Geomembranes are the most widely used components of liner and cover systems throughout the world. Arguably they are the most critical components of such systems. Millions of square meters of geomembranes have been used as liquid barriers over the past 20 years. However, there is a debate over how to properly determine the performance tensile characteristic of these materials. This paper attempts to shed some light on obtaining uniaxial performance responses of commercially available geomembranes via ASTM D 4885, Standard Test Method for Determining Performance Strength of Geomembranes by the Wide Strip Tensile Method. Over the past ten years since the test method was issued, several inconsistencies have been identified with the method. Such inconsistencies make it difficult for laboratories to generate comparable results while utilizing the standard. Areas of concern are specimen preparation, clamping, strain rates and data reduction. it is hoped that the paper may help promote uniform and consistent wide-width geomembrane testing. This paper contends that wide-width geomembrane testing is a performance test and that is would only be used for the purpose of design and research.

Availability:
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Corporate Authors:
American Society for Testing and Materials (ASTM)

100 Barr Harbor Drive, P.O. Box C700
West Conshohocken, PA United States 19428-2957
Authors:
- KOERNER, G R
Conference:
- Grips, Clamps, Clamping Techniques and Strain Measurement for Testing of Geosynthetics
- Location: Memphis, Tennessee
- Date: 1999-1-28 to 1999-1-28
Publication Date: 2000-1

Language

English

Media Info

Features: Figures; References;
Pagination: p. 18-27

Subject/Index Terms

TRT Terms: Barriers (Roads); Clamps; Design; Geomembranes; Liquids; Performance; Standards; Strain (Mechanics); Tensile strength; Tests; Width
Subject Areas: Design; Geotechnology; Highways; Materials; I35: Miscellaneous Materials;

Filing Info

Accession Number: 00801031
Record Type: Publication
ISBN: 0803128541
Report/Paper Numbers: STP 1379
Files: TRIS
Created Date: Oct 16 2000 12:00AM