20.99 Apr 9, 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.
IN_DEVELOPMENT
ISO/WD TS 25332
20.99
WD approved for registration as CD
Apr 9, 2026