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Main Title Stress cracking behavior of HDPE geomembranes and its prevention /
Author Koerner, Robert M.,
Other Authors
Author Title of a Work
Hsuan, Y. G.
Lord, Arthur E.,
Carson, David A.,
Publisher Environmental Protection Agency, Risk Reduction Engineering Laboratory, United States Environmental Protection Agency, Center for Environmental Research Information
Year Published 1993
Report Number EPA/600-SR-93-092
OCLC Number 903955698
Subjects Geomembranes--Testing
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-SR-93-092 In Binder Headquarters Library/Washington,DC 10/25/2018
ELBD ARCHIVE EPA 600-SR-93-092 In Binder Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-SR-93-092 repository copy AWBERC Library/Cincinnati,OH 08/01/2017
ELBD  EPA 600-SR-93-092 AWBERC Library/Cincinnati,OH 11/15/2016
Collation 3 pages : chart ; 28 cm
At head of title: Project Summary. "EPA/600-SR-93-092." "July 1993."
Contents Notes
The project summarized here focused on the stress cracking behavior and testing of geomembranes made from high-density polyethylene (HDPE). The project included a literature study of stress cracking failures in the field and exhumation of gemembranes at various sites of opportunity. In total, twenty-five cases of stress cracking have been documented since the introduction of this particular material in 1980. Because of the limitations of the currently used ASTM D 1693 "bent strip" test method for evaluating stress cracking behavior of HDPE geomembranes, a new test was developed-the notched, constant-tensile-load (NCTL) test. Eighteen commericially available sheet materials and seven field-exhumed geomembranes were evaluated using the test. The results led to the recommendation that for an HDPE geomembrane to be acceptably crack resistant, the transition time to the onset of brittle behavior must be greater than 100 hr. The results also indicated that the NCTL test is much more challenging than is the bent strip test. In addition, two related tests, a single-point, notched, constant-tensile-load (SP-NCTL) test and a seam, constant-tensile-load (SCTL) test was establised. The recommendations for both of these tests were that no failure should occur within 200 hr at an applied stress of 30% of yield stress of the sheet for five replicate tests. The implementation of this set of three tests is oriented toward resin suppliers, manufacturers, designers, and owners involved with HDPE geomembranes. By employing the recommendations made in the full report, the incidence of stress cracking of HDPE geomembranes in the field should be significantly reduced