1.1 本指南通过系统地确定可能影响土工合成材料施工后使用寿命的适当应用环境因素，涵盖了设计者/说明者。随后，推荐了试验方法，以便于在指定环境中对土工合成材料的耐久性进行实验评估，以便在设计过程中考虑耐久性。 1.2 本指南无意解决与制造、搬运、运输或安装环境相关的耐久性问题。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 土工合成材料的设计者/说明者应评估土工合成材料的耐久性，作为土工合成材料规范/选择过程的一个组成部分。本指南旨在根据预期的土工合成材料功能或性能特征，通过系统地确定退化问题来指导设计者/说明者。 然后，本指南提供了一个指南，用于选择可用的测试方法来实验评估土工合成材料的耐久性，并确定不存在合适测试的区域。 5.2 本指南不涉及因制造、搬运、运输或安装土工合成材料而导致的退化评估。

1.1 This guide covers a designer/specifier through a systematic determination of those factors of the appropriate application environment that may affect the post-construction service life of a geosynthetic. Subsequently, test methods are recommended to facilitate an experimental evaluation of the durability of geosynthetics in a specified environment so that the durability can be considered in the design process. 1.2 This guide is not intended to address durability issues associated with the manufacturing, handling, transportation, or installation environments. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Designers/specifiers of geosynthetics should evaluate geosynthetic durability as an integral part of the geosynthetic specification/selection process. This guide is intended to guide a designer/specifier through a systematic determination of degradation concerns based on the intended geosynthetic function or performance characteristic. This guide then provides a guide to select available test methods for experimentally evaluating geosynthetic durability and to identify areas where no suitable test exists. 5.2 This guide does not address the evaluation of degradation resulting from manufacturing, handling, transporting, or installing the geosynthetic.