1.1 本规程涵盖了从试验台获取土工合成粘土衬垫（GCL）样品的标准化程序，用于评估仅由安装技术引起的安装后立即产生的影响。评估可能包括物理测试。本规程仅适用于GCL。 1.2 本规程仅限于全尺寸试验垫，不涉及现场条件的实验室建模。本规程未说明用于量化安装损坏的测试方法。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者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 土工合成粘土衬里的设计功能（例如屏障）或设计性能（例如剥离强度、耐化学性等），或两者兼而有之的能力，可能会因现场安装的严格性而受到GCL物理结构损坏的影响。可通过分析从安装在代表性试验垫后取回的样品上切下的试样来评估损坏的影响。分析可通过目视检查或实验室测试控制样品和挖掘样品的样品进行。 5.2 需要使用项目特定或普遍接受的代表性材料和程序，对安装损坏进行评估，以便从试验垫上安装和回收代表性样品的统一做法。特定安装程序下特定等级和类型GCL的损坏可通过从全尺寸试验垫中挖掘的样本进行评估。

1.1 This practice covers standardized procedures for obtaining samples of geosynthetic clay liners (GCLs) from a test pad for use in assessment of the effects immediately after installation caused only by the installation techniques. The assessment may include physical testing. This practice is applicable to GCLs only. 1.2 This practice is limited to full-scale test pads, 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, barrier) or design properties (for example, peel strength, chemical resistance, etc.), or both, of a geosynthetic clay liner may be affected by damage to the physical structure of the GCL 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 pad. 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 pad is needed to assess installation damage using project-specific or generally accepted, representative materials and procedures. Damage of a specific grade and type of GCL under specific installation procedures may be assessed with sample(s) exhumed from a full-scale test pad.