详情

原文传递 Need for substitute surfactant for ASTM D5397

题名：	Need for substitute surfactant for ASTM D5397
正文语种：	eng
作者：	George R. Koerner
作者单位：	Geosynthetic Institute in Folsom Pa
摘要：	It has been brought to our attention by the ASTM task group regarding ASTM D5397, Standard Test Method for Evaluation of Stress Crack Resistance of Polyolefin Geomembranes Using Notched Constant Tensile Load Test, that the surfactant used in this experiment (Igepal CO-630) is a regulated substance in some countries (i.e., EU Registration, Evaluation, Authorisation and Restriction of Chemicals [REACH] directive). For this reason, many labs throughout the world are requesting a substitute-alternative surfactant for determining the stress crack resistance of High Density Polyethylene (HDPE). Our industry continues to search for an alternative surfactant for ASTM D5397 that is effective and available globally. Improved stress cracking resistance in HDPE geomembranes has been a quest of our industry for many years, and our industry has made great strides in improving the stress crack resistance of HDPE geomembranes. The Geosynthetic Institute's (GSI) GRI-GM13 standard specification for HDPE geomembranes has improved the ASTM D5397 (appendix) single-point notch constant tension load results as follows: May 15, 2003: Increased minimum acceptable stress crack resistance time from 200 hours to 300 hours.
出版年：	2023
期刊名称：	Geosynthetics
卷：	41
期：	4
页码：	40-41