1.1 本试验方法涵盖了土工合成材料或土工合成材料组合（即土工合成材料（不包括土工织物、土工膜和土工合成粘土衬垫））在短期压缩荷载下变形的评估程序。本试验方法严格来说是一种指数试验方法，用于验证给定人造土工合成材料的抗压强度一致性。本试验方法的结果不应被视为土工合成材料在现场应用中的实际或长期性能指标。 1.2 由于这些土工合成材料可能在现场承受多向压缩载荷，因此该试验方法不会显示实际的现场性能，不应用于该特定目标。结果评估者还应认识到，土工合成材料短期单平面压缩行为的确定并不反映合成排水系统的安装性能，因此，不应将其用作合成排水系统产品规格或性能的唯一方法。 1.3 以国际单位制为单位的数值将被视为标准。括号中提供了以英寸-磅为单位的数值，以供参考。 1.4 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。 1.5 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 土工合成材料的压缩性能试验旨在作为指标试验。预计压缩性能测试的结果将用于评估产品。 分析结果也可用于比较表现出可检测压缩屈服点的材料的相对压缩屈服点。预计该测试将用于质量控制测试，以评估样品几何因素（例如厚度）或材料可能发生变化的批次内或批次之间的均匀性和一致性。 注1: 这是土工合成材料在一个平面内压缩荷载的一维试验。 5.1.1 土工合成材料的压缩屈服点可根据应力/应变关系进行评估。许多材料表现出压缩变形，但可能没有表现出明显的压缩屈服点。 5.2 该试验方法可用于评估土工合成材料在恒定变形速率加载时在压应力下的短期应力/应变行为。 5.3 本试验方法可用于土工合成材料商业装运的验收试验，但建议谨慎，因为层间试验不完整。 5.3.1 如果使用本测试方法进行商业装运验收测试时，由于报告测试结果的差异而产生争议，买方和供应商应进行比较测试，以确定其实验室之间是否存在统计偏差。建议为调查偏差提供称职的统计协助。至少，双方应从运往项目的材料中提取一组试样。然后，应将试样以相同数量随机分配给每个实验室进行测试。两个实验室的平均结果应使用学生的 t -测试未配对数据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，必须找到并纠正其原因，或者买方和供应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 the procedures for evaluation of the deformations of a geosynthetic or combination of geosynthetics (that is, geocomposite (excluding geotextiles, geomembranes, and geosynthetic clay liners)) under short-term compressive loading. This test method is strictly an index test method to be used to verify the compressive strength consistency of a given manufactured geosynthetic(s). Results from this test method should not be considered as an indication of actual or long-term performance of the geosynthetic(s) in field applications. 1.2 Since these geosynthetics may experience multidirectional compressive loadings in the field, this test method will not show actual field performance and should not be used for this specific objective. The evaluator of the results should also recognize that the determination of the short-term single-plane compressive behavior of geosynthetics does not reflect the installed performance of synthetic drainage systems and, therefore, should not be used as the only method of product specification or performance with respect to synthetic drainage systems. 1.3 The values in SI units are to be regarded as the standard. Values in inch-pound units are provided in parentheses for information. 1.4 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. 1.5 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 compression behavior test for geosynthetics is intended to be an index test. It is anticipated that the results of the compression behavior test will be used to evaluate product. The results of the analyses may also be used to compare the relative compressive yield points of materials that exhibit a detectable compressive yield point. It is anticipated that this test will be used for quality control testing to evaluate uniformity and consistency within a lot or between lots where sample geometry factors (for example, thickness) or materials may have changed. Note 1: This is a one-dimensional test for compressive loading of a geosynthetic(s) in one plane. 5.1.1 The compressive yield point of geosynthetics may be evaluated from the stress/strain relationship. Many materials exhibit compressive deformation but may not show a distinct compressive yield point. 5.2 This test method can be used to evaluate the short-term stress/strain behavior of geosynthetics under compressive stress while loaded at a constant rate of deformation. 5.3 This test method may be used for acceptance testing of commercial shipments of geosynthetics, but caution is advised because interlab testing is incomplete. 5.3.1 In the case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. At a minimum, two parties should take a group of test specimens from material shipped to the project. The test specimens 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 Student's t -test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If bias is found, either its cause must be found and corrected or the purchaser and supplier must agree to interpret future test results in the light of the known bias.