30.20 Aug 11, 2026
ISO
ISO/TC 221
Technical Specification
A Technical Specification to provide guidance to users, engineers and specifiers on the test methods for durability of GCCs and GCC-Bs. Current durability testing for geosynthetics is based on retention of tensile strength; this is not a relevant characteristic for GCCs and GCC-Bs. Several test methods for these geosynthetics have been developed and the purpose of this TS is to explain how these test methods can be used as an indicator of long-term performance.
PROJECT
ISO/CD TS 25332
30.20
CD study/ballot initiated
Aug 11, 2026
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