1.1 本试验方法涵盖并可用作测定所有土工织物单位面积质量的指标。 1.2 以SI单位或其他单位表示的值应单独视为标准值。括号中陈述的值仅供参考。 1.3 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 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》中确立的国际公认的标准化原则制定的。======意义和用途====== 5.1 该试验方法用于确定土工织物材料是否符合单位面积质量的规格。该测试方法可用于质量控制，以确定样品的一致性。该测量允许通过比较输送材料的每单位面积的质量和每单位面积的规定质量来简单地控制输送材料。 5.2 本试验方法中的程序可用于商业装运的验收试验，但建议谨慎，因为有关实验室间精密度的信息不完整。根据 5.2.1 都是可取的。 5.2.1 如果在使用本试验方法中的程序进行商业装运验收试验时，由于报告的试验结果不同而产生争议，买方和制造商应进行比较试验，以确定其实验室之间是否存在统计学偏差。对于偏倚的调查，建议有能力的统计协助。至少，双方应采取一组尽可能同质的测试样本，这些样本来自所讨论类型的大量材料。然后，应将相同数量的测试样本随机分配到每个实验室进行测试。两个实验室的平均结果应使用适当的学生 t -测试和双方在测试开始前选择的可接受概率水平。如果发现偏差，要么必须找到并纠正其原因，要么买方和制造商必须同意根据已知偏差解释未来的测试结果。

1.1 This test method covers and can be used as an index to the determination of mass per unit area of all geotextiles. 1.2 The values stated in SI units or other units shall be regarded separately as standard. The values stated in parentheses are provided for information only. 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 This test method is used to determine if the geotextile material meets specifications for mass per unit area. This test method can be used for quality control to determine specimen conformance. This measurement allows for a simple control of the delivered material by a comparison of the mass per unit area of the delivered material and the specified mass per unit area. 5.2 The procedure in this test method may be used for acceptance testing of commercial shipments, but caution is advised since information about between-laboratory precision is incomplete. Comparative tests in accordance with 5.2.1 are advisable. 5.2.1 In case of a dispute arising from differences in reported test results when using the procedures in this test method for acceptance testing of commercial shipments, the purchaser and the manufacturer should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and which are from a lot of material of the type in question. The test specimen should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using the appropriate Student’s t -test and an acceptable probability level chosen by the two parties before testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the manufacturer must agree to interpret future test results in light of the known bias.