1.1 本规程涵盖了从试验段获取土工合成材料样品的标准程序，用于评估仅由安装技术引起的安装后立即损坏的影响。评估可能包括物理测试。本规程适用于任何土工合成材料，但安装在骨料层或粘合剂改性土壤层之间的土工合成材料除外。 注1: 粘合剂将抑制土工合成材料的回收，而不会对土工合成材料造成进一步损坏。其他做法可能适用于检索这些应用中使用的土工合成材料，但不在本做法的范围内。 1.2 本规程仅限于全尺寸试验段，不涉及现场条件的实验室建模。本规程不涉及用于量化安装损坏的测试方法。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 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 由于现场安装的严格性，土工合成材料的物理结构受损，可能会影响土工合成材料维持设计功能（例如，加固、分离、屏障等）或设计特性（例如，抗拉强度、耐化学性等）或两者的能力。 可以通过分析从安装在代表性试验段后回收的样品中切下的样品来评估损伤的影响。可以通过目视检查或实验室测试对照样品和挖掘样品中的样本来进行分析。 5.2 使用项目特定或普遍接受的代表性材料和程序，需要从试验段安装和检索代表性样品的统一做法，以评估安装损坏。在特定安装程序下，可使用从全尺寸试验段挖掘的样品评估特定等级和类型的土工合成材料的损坏。

1.1 This practice covers standardized procedures for obtaining samples of geosynthetics from a test section for use in assessment of the effects of damage immediately after installation caused only by the installation techniques. The assessment may include physical testing. This practice is applicable to any geosynthetic except those installed between layers of aggregate or soil modified by a binder. Note 1: The binder would inhibit the retrieval of the geosynthetic without inflicting further damage to the geosynthetic. Other practices may be suitable for retrieving geosynthetics used in these applications but are out of the scope of this practice. 1.2 This practice is limited to full-scale test sections and does not address laboratory modeling of field conditions. This practice does not address which test method(s) to use for quantifying installation damage. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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 The ability to maintain design function (for example, reinforcement, separation, barrier, etc.) or design properties (for example, tensile strength, chemical resistance, etc.), or both, of a geosynthetic may be affected by damage to the physical structure of the geosynthetic due to the rigors of field installation. The effect of damage may be assessed by analyzing specimens cut from sample(s) retrieved after installation in a representative test section. Analysis may be performed with visual examination or laboratory testing of specimens from the control sample(s), and from the exhumed sample(s). 5.2 A uniform practice for installing and retrieving representative sample(s) from a test section is needed to assess installation damage using project-specific or generally accepted, representative materials and procedures. Damage of a specific grade and type of geosynthetic under specific installation procedures may be assessed with sample(s) exhumed from a full-scale test section.