1.1 本规程涵盖了土工合成粘土衬里（GCL）的制造质量控制，描述了试验类型、适当的试验方法和最低试验频率。 1.2 本实践旨在帮助GCL的制造商、供应商、采购商和用户建立最低水平的制造质量控制。 1.3 本规程不涉及制造质量保证、产品验收测试或一致性测试。这些是GCL制造商以外的组织开展的独立活动。 1.4 以国际单位或英寸-磅单位表示的数值应单独视为标准值。每个系统中所述的值不一定精确相等； 因此，为了确保符合标准，每个系统应独立于另一个系统使用，并且两个系统的值不应合并。 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（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====== 4.1 GCL必须以符合最终产品内部测试确定的最低质量控制水平的方式正确制造。该实践建议了测试类型、测试方法和最小测试频率。 MD=机器方向。 CD=穿过机器方向。 最小值=选择所提供辊的生产批次的最低结果。 最大值=从中选择所提供辊的生产批次的最高结果。 n/a=不适用。 （A） 在将膨润土制成GCL产品之前，应对收到的材料进行膨润土测试。 （B） 部件制造商的证书或GCL制造商的QA，或两者兼而有之。 在组件用于GCL生产之前，必须收到证书并进行检查。 （C） 如果生产过程中添加的膨润土的含水量没有变化，则膨润土单位面积的质量和含水量（根据1.3 表1 )可用于确定成品GCL产品的值。 （D） 不应分离和测试GCL成品中的组件，因为生产过程可能会改变组件的特性。 （E） MARV–最小平均轧制值，仅评估一年生产期的平均值减去2个标准偏差。如果生产周期小于一年，例如，对于作业- 特定产品，MARV值可能无法评估，则应报告最小值。 （F） 干燥膨润土应定义为0 % 含水量。 （G） 内部剪切试验（试验方法 D6243/D6243米 )可能适用于非针刺加固和缝合粘合GCL粘合强度的质量控制。 （H） 本试验不适用于多组分GCL（例如，具有土工膜背衬、土工膜背衬或聚合物背衬的产品）。 4.2 应该清楚地认识到，制造商可能会进行额外的测试，或以比本规程要求的更高的频率进行测试，或同时进行这两种测试。在这种情况下，制造商的质量控制计划将优先于本规程。 中引用的试验和试验方法 表1 必须出现在QC计划和QC报告中。 4.3 还应认识到，GCL的购买者和安装者可能需要额外的测试或比本实践中要求的频率更高的测试，或两者兼而有之。制定此类项目特定规范或质量保证计划的组织应认识到，此类要求超出了当前实践状态。如果买方或安装商提出此类请求，他们应在合同决定期间将要求明确传达给制造商或供应商，以避免随后发生争议。

1.1 This practice covers the manufacturing quality control of geosynthetic clay liners (GCLs), describing types of tests, the proper test methods, and the minimum testing frequencies. 1.2 This practice is intended to aid manufacturers, suppliers, purchasers, and users of GCLs in establishing a minimum level of effort for manufacturing quality control. 1.3 This practice does not address manufacturing quality assurance, product acceptance testing, or conformance testing. These are independent activities taken by organizations other than the GCL manufacturer. 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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 GCLs must be properly manufactured in a manner consistent with a minimum level of quality control as determined by in-house testing of the final product. This practice suggests the types of tests, the methods of the testing, and the minimum testing frequencies. MD = machine direction. CD = cross-machine direction. Minimum = lowest result for the produced lot from which the supplied rolls were selected. Maximum = highest result for the produced lot from which the supplied rolls were selected. n/a = not applicable. (A) The tests on the bentonite are to be performed on the as-received material before fabrication into the GCL product. (B) Cert letter from component manufacturer or QA from GCL manufacturer, or both. Cert letters must arrive and be checked before the components are used for the GCL production. (C) If the moisture content from the bentonite added during production did not change, the mass per unit area and moisture content of the bentonite (evaluated according to 1.3 in Table 1 ) can be used to determine the values of the finished GCL product. (D) Components from finished GCL product should not be separated and tested, because the production process may alter the properties of the components. (E) MARV–minimum average roll value, only evaluated for a one-year production period with an average value minus 2 standard deviations. If the production period is less than one year, for example, for job-specific products, a MARV value may not be able to be evaluated, then the minimum value shall be reported. (F) Dried bentonite should be defined as 0 % moisture content. (G) Internal shear testing (Test Method D6243/D6243M ) may be applicable to quality control of the bonding strength of non-needle-punched reinforced and stitch-bonded GCLs. (H) This test is not applicable for multi-component GCLs (for example, products with geomembrane backing(s), geofilm backing(s), or polymer backing(s)). 4.2 It should be clearly recognized that manufacturers may perform additional tests or at greater frequency than required in this practice, or both. In this case, the manufacturer's quality control plan will then take precedence over this practice. The quoted tests and test methods in Table 1 must appear in the QC plan and the QC report. 4.3 It should also be recognized that purchasers and installers of GCLs may require additional tests or greater frequencies than called for in this practice, or both. The organization(s) producing such project-specific specification or quality assurance plan should recognize that such requirements are beyond the current state of the practice. If such a request is made by purchasers or installers, they should clearly communicate the requirements to the manufacturer or supplier during the contract decisions in order that disputes do not arise at a subsequent time.