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New GSI method determines strain hardening modulus for stress crack resistance of HDPE geomembranes
| 题名： | New GSI method determines strain hardening modulus for stress crack resistance of HDPE geomembranes |
| 正文语种： | eng |
| 作者： | George R. Koerner |
| 作者单位： | the Geosynthetic Institute in Folsom Pa |
| 摘要： | Traditionally, high-density polyethylene (HDPE) geomembranes are checked for stress crack resistance using the ASTM D5397 single point-notched constant tensile load (SP-NCTL) test (Hsuan, Lord and Koerner [1990]). This test uses notched specimens, surfactant, and elevated temperatures to accelerate the behavior and force a brittle failure in HDPE geomembranes. With todays high stress crack resistant HDPE resins, the SP-NCTL test can now take thousands of hours. In short, this is too long for efficient manufacturer quality control. What is needed is an extremely fast method for determining the stress crack susceptibility of HDPE geomembranes. Such a technique has been suggested by Havermans et al. (2010); Zanzinger et al. (2015); and Ramsey, Zanzinger and Zimmel (2018). |
| 出版年： | 2022 |
| 期刊名称： | Geosynthetics |
| 卷： | 40 |
| 期： | 2 |
| 页码： | 42-43 |
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