通过该协议，可以确定土工合成增强材料的长期强度和刚度。本协议包含测试和评估程序，以确定装置损坏、蠕变和化学/生物耐久性的折减系数，以及结合这些因素确定长期强度的方法。本协议旨在解决聚丙烯（PP）、聚乙烯（PE或HDPE）和聚酯（PET）土工合成材料（即土工织物和土工格栅）的问题。对于其他土工合成聚合物[（e。 g、 ，聚酰胺（PA）或聚乙烯醇（PVA）]，此处提供的安装损坏和蠕变协议直接适用。虽然本文提供的化学和生物耐久性程序和标准也可能适用于其他聚合物（例如，附录C中所述的水解试验可能适用于PA和PVA土工合成材料），但其他 需要进行调查，以确定这些其他聚合物的详细方案和验收标准。一旦对本协议的化学/生物耐久性方面进行了修改，并经审批机构同意，可考虑使用本协议对这些其他聚合物进行评估。

Through this protocol, the long-term strength and stiffness of geosynthetic reinforcements can be determined. This protocol contains test and evaluation procedures to determine reduction factors for installation damage, creep, and chemical/biological durability, as well as the method to combine these factors to determine the long-term strength.This protocol has been developed to address polypropylene (PP), polyethylene (PE or HDPE), and polyester (PET) geosynthetics (i.e., geotextiles and geogrids). For other geosynthetic polymers [(e.g., polyamide (PA) or polyvinyl alcohol (PVA)], the installation damage and creep protocols provided herein are directly applicable. While the chemical and biological durability procedures and criteria provided herein may also be applicable to other polymers (for example, hydrolysis testing as described in Annex C is likely applicable to PA and PVA geosynthetics), additional investigation will be required to establish a detailed protocol and acceptance criteria for these other polymers. These other polymers may be considered for evaluation using this protocol once modifications to the chemical/biological durability aspects of this protocol have been developed and are agreed upon by the approval authority.