1.1 本规程涵盖了为实验室测试目的对土工合成粘土衬垫（GCL）进行取样的程序。这些程序旨在确保获得具有代表性的样品并妥善包装，以提交给测试实验室。 1.2 本规程中的程序可适用于安装前在项目现场（或在生产设施，装运到项目现场之前）获得的未脱水GCL样品，或安装后从项目现场挖出的样品。 1.3 假设 数字 已在项目规范、标准试验方法或买卖双方事先达成的协议中确定了待获得样品的数量。本规程仅涵盖获取预先安排数量样本的方法，而未描述从样本中获取单个样本的方法。 1.4 以国际单位制或英寸磅单位表示的数值应单独视为标准。 每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值结合起来可能会导致不符合标准。 1.5 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。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 本规程提供了一种获取GCL样品进行实验室测试的程序。 该做法适用于安装前（在工作现场或生产设施）获得的材料或安装后挖掘的材料。 4.2 仅根据 5.1 出于质量保证/质量控制（QA/QC）目的，本规程的将被视为实际制造的GCL的代表。 4.3 实验室收到的GCL数量应足以制备几个具有代表性的试样，用于对GCL进行标准化物理、液压和机械测试。 4.4 工厂和现场人员应使用本规程中的程序获取GCL样品进行实验室测试。

1.1 This practice covers procedures for sampling geosynthetic clay liners (GCLs) for the purpose of laboratory testing. These procedures are designed to ensure that representative samples are obtained and properly packaged for submittal to a testing laboratory. 1.2 The procedures in this practice may be applied to either samples of unhydrated GCLs obtained at the project site prior to installation (or at the production facility, prior to shipment to the project site) or samples exhumed from a project site after installation. 1.3 It is assumed that the number of samples to be obtained has already been determined in the project specification, standard test method, or by prior agreement between the purchaser and seller. This practice covers only the methods for obtaining a pre-arranged number of samples and does not describe methods for obtaining individual specimens from the sample. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.5 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. 1.6 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 ====== 4.1 This practice provides a procedure by which samples of GCL should be obtained for laboratory testing. The practice applies to materials obtained prior to installation (either at a job site or at a production facility) or exhumed material after installation. 4.2 Only GCL samples obtained in accordance with 5.1 of this practice will be considered representative of the actual manufactured GCL for quality assurance/quality control (QA/QC) purposes. 4.3 The quantity of GCL received by the laboratory should be sufficient for the preparation of several representative test specimens for the standardized physical, hydraulic, and mechanical tests to be performed on the GCLs. 4.4 The procedures in this practice should be used by plant and field personnel for obtaining GCL samples for laboratory testing.