AASHTO R 69-20 PDF Download

The AASHTO R 69-20 standard is a set of guidelines for determining the long-term strength of geosynthetic reinforcement materials, specifically polypropylene, polyethylene, and polyester geosynthetics. The standard provides definitions of geosynthetic reinforcement and specifies the types of geosynthetics that fall under its scope.

The standard also acknowledges that it may be applicable to other geosynthetic polymers such as polyamide or polyvinyl alcohol, with the understanding that additional investigation and modification of the chemical and biological durability aspects may be necessary to establish a detailed protocol and acceptance criteria for these polymers.

The standard is based on SI units as the standard measurement system. It also recognizes that the use of hazardous materials, operations, and equipment may be involved in implementing the standard. Therefore, it emphasizes the importance of the user establishing appropriate safety and health practices and complying with regulatory limitations.