1.1 本规程涵盖土工格栅耐液体化学性测试程序。 1.2 本规程描述了测量因浸泡在可能代表预期最终使用条件的试验溶液中而引起的物理和机械性能变化的方法。 1.3 本规程描述了土工格栅所需和推荐测试的程序。 1.4 测试数据的评估或解释超出了本规程的范围。 1.5 本规程旨在与规程结合使用 D5322 或练习 D5496 ，或两者兼而有之。本规程的范围仅限于未暴露和暴露的土工格栅试件的测试和报告程序。 1.6 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和健康实践，并确定监管限制的适用性。 第节给出了具体的预防说明 7. . 1.7 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 本规程旨在提供一份标准程序清单，用于调查土工格栅对液体的耐化学性的测试程序。这种做法应在没有针对特定情况所需的其他规范的情况下使用。 5.2 本规程旨在为希望比较或研究土工格栅耐化学性的人员提供标准化基础。应认识到，耐化学性是一种用户判断评估，本规程不提供解释从本规程中包含的测试程序中获得的结果的程序。实际上，这不会产生测试结果。 5.3 本规程用于土工格栅的耐化学性评估，与土工膜、土工织物、土工网和土工管道的类似规程平行编写。每种做法应分别考虑调查中的土工合成材料和暴露在潜在恶劣化学环境中的所有土工合成材料。

1.1 This practice covers the procedures for testing of geogrids for chemical resistance to liquids. 1.2 This practice describes methods for measuring changes in physical and mechanical properties caused by immersion in test solutions that may be representative of anticipated end-use conditions. 1.3 This practice describes procedures for required and recommended testing of geogrids. 1.4 Evaluation or interpretation of test data is beyond the scope of this practice. 1.5 This practice is intended to be used in conjunction with Practice D5322 or Practice D5496 , or both. The scope of this practice is limited to testing and reporting procedures for unexposed and exposed geogrid coupons. 1.6 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 7 . 1.7 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 practice is intended to provide a list of standard procedures for test programs investigating the chemical resistance of a geogrid to a liquid. This practice should be used in the absence of other specifications required for the particular situation being addressed. 5.2 This practice is intended to provide a basis of standardization for those wishing to compare or investigate the chemical resistance of a geogrid. It should be recognized that chemical resistance is a user judgment evaluation and that this practice does not offer procedures for interpreting the results obtained from test procedures contained in this practice. As a practice, this does not produce a test result. 5.3 This practice is for the chemical resistance assessment of geogrids and is written in parallel to similar practices for geomembranes, geotextiles, geonets, and geopipes. Each practice is to be considered individually for the geosynthetic under investigation and collectively for all geosynthetics exposed to the potentially harsh chemical environment under consideration.